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189 results on '"Freudenberg, Jan"'

1. Exceptionally High Two-Photon Absorption in Diazaacene-Bithiophene Derivatives: A Combined Experimental and Theoretical Approach

Author

Sauter, Gabriel, Papapostolou, Antonia, Pollien, Audrey, Boschmann, Sergius, Fuchs, Kathleen, Freudenberg, Jan, Bunz, Uwe H. F., Dreuw, Andreas, and Tegeder, Petra

Subjects
Condensed Matter - Materials Science
Abstract

This study delves into the enhancement of two-photon absorption (2PA) properties in diazaacene-bithiophene derivatives through a synergistic approach combining theoretical analysis and experimental validation. By investigating the structural modifications and their impact on 2PA cross sections, we identify key factors that significantly influence the 2PA efficiency. For all molecular systems studied, our state-of-the-art quantum chemical calculations show a very high involvement of the first excited singlet state (S1) in the 2PA processes into higher excited states, even if this state itself has only a small 2PA cross section for symmetry reasons. Consequently, both the oscillator strength of S1 and the transition dipole moments between S1 and other excited states are of importance, underscoring the role of electronic polarizability in facilitating effective two-photon interactions. The investigated compounds exhibit large 2PA cross sections over a wide near-infrared spectral range reaching giant values of 42000 GM. The introduction of diazine and diazaacene moieties into bithiophene derivatives not only induces charge transfer but also opens up pathways for the creation of materials with tailored nonlinear optical responses, suggesting potential applications in nonlinear optics., Comment: 26 pages; 12 figures

Published
2024

2. Experimental Evidence of Direct Exchange Interaction Mediating Intramolecular Singlet Fission in Weakly-Coupled Dimers

Author

Kefer, Oskar, Kolesnichenko, Pavel V., Ahrens, Lukas, Freudenberg, Jan, Bunz, Uwe H. F., and Buckup, Tiago

Subjects
Physics - Chemical Physics, Condensed Matter - Materials Science, Physics - Optics
Abstract

The electronic interaction between an optically active singlet state ($S_1S_0$) and a dark state of singlet multiplicity, known as correlated triplet pair ($^1[TT]$), plays a crucial role in the effective transformation from $S_1S_0$ to $^1[TT]$ during intramolecular singlet fission (iSF). This process is understood through mechanisms such as direct exchange coupling and incoherent processes that involve super-exchange coupling through charge-transfer states. However, most insights into these mechanisms are derived from theoretical studies due to the difficulties in obtaining experimental evidence. In this study, we investigate the excited-state interactions between $S_1S_0$ and $^1[TT]$ in spiro-conjugated iSF sensitizers by employing transient two-dimensional electronic spectroscopy. This approach allows us to focus on the early stages of the conversion from $S_1S_0$ to $^1[TT]$. Upon optical excitation, a superposition of $S_1S_0$ and $^1[TT]$ is created, which gradually transitions to favor $^1[TT]$ within the characteristic time frames of iSF. The observed high-order signals indicate circular repopulation dynamic that effectively reinitiates the iSF process from higher energy electronic states. Our findings, supported by semi-quantum-mechanical simulations of the experimental data, suggest the presence of a direct iSF mechanism in the dimers, facilitated by weak non-adiabatic coupling between $S_1S_0$ and $^1[TT]$. This experiment provides new insights into the equilibrium between the two electronic states, a phenomenon previously understood primarily through theoretical models., Comment: 26 pages, 4 Figures

Published
2024

3. A large meta-analysis identifies genes associated with anterior uveitis

Author

Gelfman, Sahar, Moscati, Arden, Huergo, Santiago Mendez, Wang, Rujin, Rajagopal, Veera, Parikshak, Neelroop, Pounraja, Vijay Kumar, Chen, Esteban, Leblanc, Michelle, Hazlewood, Ralph, Freudenberg, Jan, Cooper, Blerta, Ligocki, Ann J., Miller, Charles G., Van Zyl, Tavé, Weyne, Jonathan, Romano, Carmelo, Sagdullaev, Botir, Melander, Olle, Baras, Aris, Stahl, Eli A., and Coppola, Giovanni

Published
2023
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6. “PMS2CL interference leading to erroneous identification of a pathogenic PMS2 variant in Black Patients”

Author

Cappadocia, Jacqueline, primary, Aiello, Lisa B., additional, Kelley, Michael J., additional, Katona, Bryson W., additional, Maxwell, Kara N., additional, Verma, Anurag, additional, Verma, Shefali S., additional, Bradford, Yuki, additional, Brock, Ashlei, additional, DerOhannessian, Stephanie, additional, Dudek, Scott, additional, Dunn, Joseph, additional, Drivas, Theodore, additional, Haubein, Ned, additional, Hu-Sain, Khadijah, additional, Judy, Renae, additional, Kloter, Ashley, additional, Ko, Yi-An, additional, Livingstone, Meghan, additional, Morrel, Linda, additional, Morse, Colleen, additional, Poindexter, Afiya, additional, Risman, Marjorie, additional, Tran, Teo, additional, Vadivieso, Fred, additional, Weaver, JoEllen, additional, Rader, Daniel J., additional, Ritchie, Marylyn D., additional, Feldman, Michael D., additional, Beechert, Christina, additional, Forsythe, Caitlin, additional, Fuller, Erin D., additional, Gu, Zhenhua, additional, Lattari, Michael, additional, Lopez, Alexander, additional, Overton, John D., additional, Padilla, Maria Sotiropoulos, additional, Pradhan, Manasi, additional, Manoochehri, Kia, additional, Schleicher, Thomas D., additional, Widom, Louis, additional, Wolf, Sarah E., additional, Ulloa, Ricardo H., additional, Averitt, Amelia, additional, Banerjee, Nilanjana, additional, Cantor, Michael, additional, Li, Dadong, additional, Malhotra, Sameer, additional, Sharma, Deepika, additional, Staples, Jeffrey, additional, Bai, Xiaodong, additional, Balasubramanian, Suganthi, additional, Bao, Suying, additional, Boutkov, Boris, additional, Chen, Siying, additional, Eom, Gisu, additional, Habegger, Lukas, additional, Hawes, Alicia, additional, Khalid, Shareef, additional, Krasheninina, Olga, additional, Lanche, Rouel, additional, Mansfield, Adam J., additional, Maxwell, Evan K., additional, Mitra, George, additional, Nafde, Mona, additional, O’Keeffe, Sean, additional, Panea, Razvan, additional, Polanco, Tommy, additional, Rasool, Ayesha, additional, Reid, Jeffrey G., additional, Salerno, William, additional, Staples, Jeffrey C., additional, Sun, Kathie, additional, Abecasis, Goncalo, additional, Backman, Joshua, additional, Damask, Amy, additional, Dobbyn, Lee, additional, Revez Ferreira, Manuel Allen, additional, Ghosh, Arkopravo, additional, Gillies, Christopher, additional, Gurski, Lauren, additional, Jorgenson, Eric, additional, Kang, Hyun Min, additional, Kessler, Michael, additional, Kosmicki, Jack, additional, Li, Alexander, additional, Lin, Nan, additional, Liu, Daren, additional, Locke, Adam, additional, Marchini, Jonathan, additional, Marcketta, Anthony, additional, Mbatchou, Joelle, additional, Moscati, Arden, additional, Paulding, Charles, additional, Sidore, Carlo, additional, Stahl, Eli, additional, Watanabe, Kyoko, additional, Ye, Bin, additional, Zhang, Blair, additional, Ziyatdinov, Andrey, additional, Ayer, Ariane, additional, Guvenek, Aysegul, additional, Hindy, George, additional, Coppola, Giovanni, additional, Freudenberg, Jan, additional, Bovijn, Jonas, additional, Siminovitch, Katherine, additional, Praveen, Kavita, additional, Lotta, Luca A., additional, Kapoor, Manav, additional, Haas, Mary, additional, Riaz, Moeen, additional, Verweij, Niek, additional, Sosina, Olukayode, additional, Akbari, Parsa, additional, Nakka, Priyanka, additional, Gelfman, Sahar, additional, Gokhale, Sujit, additional, De, Tanima, additional, Rajagopal, Veera, additional, Shuldiner, Alan, additional, Tzoneva, Gannie, additional, Rodriguez-Flores, Juan, additional, Chen, Esteban, additional, Jones, Marcus B., additional, LeBlanc, Michelle G., additional, Mighty, Jason, additional, Mitnaul, Lyndon J., additional, Nishtala, Nirupama, additional, Rana, Nadia, additional, Hernandez, Jaimee, additional, Baras, Aris, additional, Deubler, Andrew, additional, and Economides, Aris, additional

Published
2024
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7. Azaacene Diradicals Based on Non‐Kekulé Meta‐Quinodimethane with Large Two‐Photon Cross‐Sections in the Infrared Spectral Region.

Author

Fuchs, Kathleen, Oberhof, Nils, Sauter, Gabriel, Pollien, Audrey, Brödner, Kerstin, Rominger, Frank, Freudenberg, Jan, Dreuw, Andreas, Tegeder, Petra, and Bunz, Uwe H. F.

Abstract

Non‐Kekulé quinoidal azaacences m‐A (1 a,b) were synthesized and compared to their para‐ and ortho‐quinodimethane analogues. m‐A display high diradical characters (1 b: y0 = 0.88) due to their meta‐quinodimethane (m‐QDM) topology. Electron paramagnetic, nuclear magnetic resonance spectroscopies and supraquantum interference device measurements in combination with quantum‐chemical calculations revealed singlet ground states for m‐A with singlet‐triplet gaps ΔEST (0.13–0.25 kcal mol−1) and thermally populated triplet states. These non‐Kekulé structures are over all void of zwitterionic character and possess record high two‐photon absorption cross sections over a broad spectral range in the near‐infrared. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Azaacene Diradicals Based on Non-Kekulé Meta- Quinodimethane

Author

Fuchs, Kathleen, primary, Oberhof, Nils, additional, Sauter, Gabriel, additional, Pollien, Audrey, additional, Brödner, Kerstin, additional, Rominger, Frank, additional, Freudenberg, Jan, additional, Dreuw, Andreas, additional, Tegeder, Petra, additional, and Bunz, Uwe H. F., additional

Published
2024
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9. Biallelic BRCA Loss and Homologous Recombination Deficiency in Nonbreast/Ovarian Tumors in Germline BRCA1/2 Carriers

Author

Wineland, Dylane, Le, Anh N., Hausler, Ryan, Kelly, Gregory, Barrett, Emanuel, Desai, Heena, Wubbenhorst, Bradley, Pluta, John, Bastian, Paul, Symecko, Heather, DʼAndrea, Kurt, Doucette, Abigail, Gabriel, Peter, Reiss, Kim A., Nayak, Anupma, Feldman, Michael, Domchek, Susan M., Nathanson, Katherine L., Maxwell, Kara N., Mansfield, Adam J., Locke, Adam, Poindexter, Afiya, Shuldiner, Alan, Li, Alexander, Lopez, Alexander, Hawes, Alicia, Averitt, Amelia, Damask, Amy, Deubler, Andrew, Ziyatdinov, Andrey, Marcketta, Anthony, Verma, Anurag, Moscati, Arden, Ayer, Ariane, Baras, Aris, Economides, Aris, Ghosh, Arkopravo, Brock, Ashlei, Kloter, Ashley, Rasool, Ayesha, Guvenek, Aysegul, Ye, Bin, Zhang, Blair, Boutkov, Boris, Forsythe, Caitlin, Sidore, Carlo, Paulding, Charles, Beechert, Christina, Gillies, Christopher, Morse, Colleen, Li, Dadong, Rader, Daniel J., Liu, Daren, Sharma, Deepika, Stahl, Eli, Jorgenson, Eric, Fuller, Erin D., Chen, Esteban, Maxwell, Evan K., Vadivieso, Fred, Tzoneva, Gannie, Hindy, George, Mitra, George, Coppola, Giovanni, Eom, Gisu, Abecasis, Goncalo, Kang, Hyun Min, Kosmicki, Jack, Hernandez, Jaimee, Freudenberg, Jan, Mighty, Jason, Staples, Jeffrey C., Reid, Jeffrey G., Mbatchou, Joelle, Weaver, JoEllen, Overton, John D., Bovijn, Jonas, Marchini, Jonathan, Dunn, Joseph, Backman, Joshua, Rodriguez-Flores, Juan, Siminovitch, Katherine, Sun, Kathie, Praveen, Kavita, Hu-Sain, Khadijah, Manoochehri, Kia, Watanabe, Kyoko, Gurski, Lauren, Dobbyn, Lee, Morrel, Linda, Widom, Louis, Lotta, Luca A., Habegger, Lukas, Mitnaul, Lyndon J., Pradhan, Manasi, Kapoor, Manav, Ferreira, Manuel Allen Revez, Jones, Marcus B., Padilla, Maria Sotiropoulos, Risman, Marjorie, Haas, Mary, Ritchie, Marylyn D., Orelus, Max, Livingstone, Meghan, Cantor, Michael, Feldman, Michael D., Kessler, Michael, Lattari, Michael, LeBlanc, Michelle G., Riaz, Moeen, Nafde, Mona, Rana, Nadia, Lin, Nan, Haubein, Ned, Verweij, Niek, Banerjee, Nilanjana, Nishtala, Nirupama, Krasheninina, Olga, Sosina, Olukayode, Akbari, Parsa, Nakka, Priyanka, Panea, Razvan, Judy, Renae, Ulloa, Ricardo H., Lanche, Rouel, Gelfman, Sahar, Malhotra, Sameer, Wolf, Sarah E., Dudek, Scott, OʼKeeffe, Sean, Khalid, Shareef, Verma, Shefali S., Chen, Siying, DerOhannessian, Stephanie, Balasubramanian, Suganthi, Gokhale, Sujit, Bao, Suying, De, Tanima, Tran, Teo, Drivas, Theodore, Schleicher, Thomas D., Polanco, Tommy, Rajagopal, Veera, Salerno, William, Bai, Xiaodong, Ko, Yi-An, Bradford, Yuki, and Gu, Zhenhua

Published
2023
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10. Compensation of Oxygen Doping in p‐Type Organic Field‐Effect Transistors Utilizing Immobilized n‐Dopants

Author

Barf, Marc‐Michael, Benneckendorf, Frank S., Reiser, Patrick, Bäuerle, Rainer, Köntges, Wolfgang, Müller, Lars, Pfannmöller, Martin, Beck, Sebastian, Mankel, Eric, Freudenberg, Jan, Jänsch, Daniel, Tisserant, Jean‐Nicolas, Lovrincic, Robert, Schröder, Rasmus R., Bunz, Uwe H. F., Pucci, Annemarie, Jaegermann, Wolfram, Kowalsky, Wolfgang, Müllen, Klaus, Barf, Marc‐Michael, Benneckendorf, Frank S., Reiser, Patrick, Bäuerle, Rainer, Köntges, Wolfgang, Müller, Lars, Pfannmöller, Martin, Beck, Sebastian, Mankel, Eric, Freudenberg, Jan, Jänsch, Daniel, Tisserant, Jean‐Nicolas, Lovrincic, Robert, Schröder, Rasmus R., Bunz, Uwe H. F., Pucci, Annemarie, Jaegermann, Wolfram, Kowalsky, Wolfgang, and Müllen, Klaus

Abstract

Poly(3‐hexyl‐thiophene‐2,5‐diyl) (P3HT) is one of the most commonly used materials in organic electronics, yet it is considered to be rather unattractive for organic field‐effect transistors (OFETs) due to its tendency to oxidize under aerobic conditions. Strong p‐doping of P3HT by oxygen causes high off‐currents in such devices opposing the desired high on/off‐ratios. Herein, a new application‐oriented method involving the recently developed immobilizable organic n‐dopant 2‐(2‐((4‐azidobenzyl)oxy)phenyl)‐1,3‐dimethyl‐2,3‐dihydro‐1H‐benzoimidazol (o‐AzBnO‐DMBI) is presented allowing to process and operate P3HT OFETs in air. The n‐dopants compensate oxygen doping by trapping generated free holes, thereby rediminishing OFET off‐currents by approximately two orders of magnitude. At the same time, field‐effect mobilities remain high in the order of up to 0.19 cm² V⁻¹ s⁻¹. Due to the covalent attachment of the dopants to the host matrix after photochemical activation, a drift of the otherwise mobile ions within the device is prevented even at high operating voltages and, thus, hysteresis in the corresponding transfer characteristics is kept low. In this manner, the air instability of P3HT OFETs is successfully resolved paving an auspicious way toward OFET mass production. As the immobilization process employed here is nonspecific with respect to the host material, this strategy is transferable to other p‐type semiconductors.

Published
2024

11. Multi-trait analysis characterizes the genetics of thyroid function and identifies causal associations with clinical implications

Author

Sterenborg, Rosalie B.T.M., Steinbrenner, Inga, Li, Yong, Bujnis, Melissa N., Naito, Tatsuhiko, Marouli, Eirini, Galesloot, Tessel E., Babajide, Oladapo, Andreasen, Laura, Astrup, Arne, Åsvold, Bjørn Olav, Bandinelli, Stefania, Beekman, Marian, Beilby, John P., Bork-Jensen, Jette, Boutin, Thibaud, Brody, Jennifer A., Brown, Suzanne J., Brumpton, Ben, Campbell, Purdey J., Cappola, Anne R., Ceresini, Graziano, Chaker, Layal, Chasman, Daniel I., Concas, Maria Pina, Coutinho de Almeida, Rodrigo, Cross, Simone M., Cucca, Francesco, Deary, Ian J., Kjaergaard, Alisa Devedzic, Echouffo Tcheugui, Justin B., Ellervik, Christina, Eriksson, Johan G., Ferrucci, Luigi, Freudenberg, Jan, Fuchsberger, Christian, Gieger, Christian, Giulianini, Franco, Gögele, Martin, Graham, Sarah E., Grarup, Niels, Gunjača, Ivana, Hansen, Torben, Harding, Barbara N., Harris, Sarah E., Haunsø, Stig, Hayward, Caroline, Hui, Jennie, Ittermann, Till, Jukema, J. Wouter, Kajantie, Eero, Kanters, Jørgen K., Kårhus, Line L., Kiemeney, Lambertus A.L.M., Kloppenburg, Margreet, Kühnel, Brigitte, Lahti, Jari, Langenberg, Claudia, Lapauw, Bruno, Leese, Graham, Li, Shuo, Liewald, David C.M., Linneberg, Allan, Lominchar, Jesus V.T., Luan, Jian’an, Martin, Nicholas G., Matana, Antonela, Meima, Marcel E., Meitinger, Thomas, Meulenbelt, Ingrid, Mitchell, Braxton D., Møllehave, Line T., Mora, Samia, Naitza, Silvia, Nauck, Matthias, Netea-Maier, Romana T., Noordam, Raymond, Nursyifa, Casia, Okada, Yukinori, Onano, Stefano, Papadopoulou, Areti, Palmer, Colin N.A., Pattaro, Cristian, Pedersen, Oluf, Peters, Annette, Pietzner, Maik, Polašek, Ozren, Pramstaller, Peter P., Psaty, Bruce M., Punda, Ante, Ray, Debashree, Redmond, Paul, Richards, J. Brent, Ridker, Paul M., Russ, Tom C., Ryan, Kathleen A., Olesen, Morten Salling, Schultheiss, Ulla T., Selvin, Elizabeth, Siddiqui, Moneeza K., Sidore, Carlo, Slagboom, P. Eline, Sørensen, Thorkild I.A., Soto-Pedre, Enrique, Spector, Tim D., Spedicati, Beatrice, Srinivasan, Sundararajan, Starr, John M., Stott, David J., Tanaka, Toshiko, Torlak, Vesela, Trompet, Stella, Tuhkanen, Johanna, Uitterlinden, André G., van den Akker, Erik B., van den Eynde, Tibbert, van der Klauw, Melanie M., van Heemst, Diana, Verroken, Charlotte, Visser, W. Edward, Vojinovic, Dina, Völzke, Henry, Waldenberger, Melanie, Walsh, John P., Wareham, Nicholas J., Weiss, Stefan, Willer, Cristen J., Wilson, Scott G., Wolffenbuttel, Bruce H.R., Wouters, Hanneke J.C.M., Wright, Margaret J., Yang, Qiong, Zemunik, Tatijana, Zhou, Wei, Zhu, Gu, Zöllner, Sebastian, Smit, Johannes W.A., Peeters, Robin P., Köttgen, Anna, Teumer, Alexander, Medici, Marco, Sterenborg, Rosalie B.T.M., Steinbrenner, Inga, Li, Yong, Bujnis, Melissa N., Naito, Tatsuhiko, Marouli, Eirini, Galesloot, Tessel E., Babajide, Oladapo, Andreasen, Laura, Astrup, Arne, Åsvold, Bjørn Olav, Bandinelli, Stefania, Beekman, Marian, Beilby, John P., Bork-Jensen, Jette, Boutin, Thibaud, Brody, Jennifer A., Brown, Suzanne J., Brumpton, Ben, Campbell, Purdey J., Cappola, Anne R., Ceresini, Graziano, Chaker, Layal, Chasman, Daniel I., Concas, Maria Pina, Coutinho de Almeida, Rodrigo, Cross, Simone M., Cucca, Francesco, Deary, Ian J., Kjaergaard, Alisa Devedzic, Echouffo Tcheugui, Justin B., Ellervik, Christina, Eriksson, Johan G., Ferrucci, Luigi, Freudenberg, Jan, Fuchsberger, Christian, Gieger, Christian, Giulianini, Franco, Gögele, Martin, Graham, Sarah E., Grarup, Niels, Gunjača, Ivana, Hansen, Torben, Harding, Barbara N., Harris, Sarah E., Haunsø, Stig, Hayward, Caroline, Hui, Jennie, Ittermann, Till, Jukema, J. Wouter, Kajantie, Eero, Kanters, Jørgen K., Kårhus, Line L., Kiemeney, Lambertus A.L.M., Kloppenburg, Margreet, Kühnel, Brigitte, Lahti, Jari, Langenberg, Claudia, Lapauw, Bruno, Leese, Graham, Li, Shuo, Liewald, David C.M., Linneberg, Allan, Lominchar, Jesus V.T., Luan, Jian’an, Martin, Nicholas G., Matana, Antonela, Meima, Marcel E., Meitinger, Thomas, Meulenbelt, Ingrid, Mitchell, Braxton D., Møllehave, Line T., Mora, Samia, Naitza, Silvia, Nauck, Matthias, Netea-Maier, Romana T., Noordam, Raymond, Nursyifa, Casia, Okada, Yukinori, Onano, Stefano, Papadopoulou, Areti, Palmer, Colin N.A., Pattaro, Cristian, Pedersen, Oluf, Peters, Annette, Pietzner, Maik, Polašek, Ozren, Pramstaller, Peter P., Psaty, Bruce M., Punda, Ante, Ray, Debashree, Redmond, Paul, Richards, J. Brent, Ridker, Paul M., Russ, Tom C., Ryan, Kathleen A., Olesen, Morten Salling, Schultheiss, Ulla T., Selvin, Elizabeth, Siddiqui, Moneeza K., Sidore, Carlo, Slagboom, P. Eline, Sørensen, Thorkild I.A., Soto-Pedre, Enrique, Spector, Tim D., Spedicati, Beatrice, Srinivasan, Sundararajan, Starr, John M., Stott, David J., Tanaka, Toshiko, Torlak, Vesela, Trompet, Stella, Tuhkanen, Johanna, Uitterlinden, André G., van den Akker, Erik B., van den Eynde, Tibbert, van der Klauw, Melanie M., van Heemst, Diana, Verroken, Charlotte, Visser, W. Edward, Vojinovic, Dina, Völzke, Henry, Waldenberger, Melanie, Walsh, John P., Wareham, Nicholas J., Weiss, Stefan, Willer, Cristen J., Wilson, Scott G., Wolffenbuttel, Bruce H.R., Wouters, Hanneke J.C.M., Wright, Margaret J., Yang, Qiong, Zemunik, Tatijana, Zhou, Wei, Zhu, Gu, Zöllner, Sebastian, Smit, Johannes W.A., Peeters, Robin P., Köttgen, Anna, Teumer, Alexander, and Medici, Marco

Abstract

To date only a fraction of the genetic footprint of thyroid function has been clarified. We report a genome-wide association study meta-analysis of thyroid function in up to 271,040 individuals of European ancestry, including reference range thyrotropin (TSH), free thyroxine (FT4), free and total triiodothyronine (T3), proxies for metabolism (T3/FT4 ratio) as well as dichotomized high and low TSH levels. We revealed 259 independent significant associations for TSH (61% novel), 85 for FT4 (67% novel), and 62 novel signals for the T3 related traits. The loci explained 14.1%, 6.0%, 9.5% and 1.1% of the total variation in TSH, FT4, total T3 and free T3 concentrations, respectively. Genetic correlations indicate that TSH associated loci reflect the thyroid function determined by free T3, whereas the FT4 associations represent the thyroid hormone metabolism. Polygenic risk score and Mendelian randomization analyses showed the effects of genetically determined variation in thyroid function on various clinical outcomes, including cardiovascular risk factors and diseases, autoimmune diseases, and cancer. In conclusion, our results improve the understanding of thyroid hormone physiology and highlight the pleiotropic effects of thyroid function on various diseases.

Published
2024

12. Interplay of Ion-Conduction and Nanoscale Self-Assembly in Amphiphilic Janus-Type Hexa-peri-hexabenzocoronenes.

Author

Weigold, Svenja, Spyridakou, Marianna, Tzourtzouklis, Ioannis, Freudenberg, Jan, Bunz, Uwe H. F., Müllen, Klaus, and Floudas, George

Abstract

Ionic discotic liquid crystals combine ion conduction with fluid, yet ordered, liquid crystal phases at ambient temperature, making them suitable nanomaterials for ion transport and energy storage. A series of Janus-type hexa-peri-hexabenzocoronenes (HBCs) with ionic (sulfonate) groups covalently bonded to the HBC core, and tetraalkylammonium counterions (sizes from 0.15 to 0.95 nm) are synthesized and investigated with respect to the self-assembly and ion dynamics. We find that the counterion size affects the nanoscale self-assembly and ionic conductivity in opposite ways. Smaller counterions act as structure formers, whereas larger ones act as structure breakers. The latter exhibits the highest ion dc-conductivity. We quantify the effect of Coulomb interactions on the self-assembly, the glass temperature Tg (which was found to vary by 30 K), and the dc-conductivity (varying by 4 orders of magnitude). The precise synthesis of tailor-made ionic discotic liquid crystals with the HBC core and the characterization of their physical properties revealed that ion-conduction and nanoscale self-assembly in HBCs can be modulated by tuning electrostatic interactions, e.g., by adjusting the size of counterions. [ABSTRACT FROM AUTHOR]

Published
2024
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13. Stabilizing Azaheptacenes

Author

Zong, Wansheng, primary, Hippchen, Nikolai, additional, Zeitter, Nico, additional, Maier, Steffen, additional, Ludwig, Philipp, additional, Rominger, Frank, additional, Freudenberg, Jan, additional, and Bunz, Uwe H. F., additional

Published
2024
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19. Doubly Bridged Anthracenes: Blue Emitters for OLEDs

Author

Ludwig, Philipp, primary, Mayer, Jacob, additional, Ahrens, Lukas, additional, Rominger, Frank, additional, Ligorio, Giovanni, additional, Hermerschmidt, Felix, additional, List‐Kratochvil, Emil J. W., additional, Freudenberg, Jan, additional, and Bunz, Uwe H. F., additional

Published
2023
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22. Doubly Bridged Anthracenes: Blue Emitters for OLEDs.

Author

Ludwig, Philipp, Mayer, Jacob, Ahrens, Lukas, Rominger, Frank, Ligorio, Giovanni, Hermerschmidt, Felix, List‐Kratochvil, Emil J. W., Freudenberg, Jan, and Bunz, Uwe H. F.

Subjects
ANTHRACENE derivatives, FRONTIER orbitals, ANTHRACENE, LIGHT emitting diodes, DELAYED fluorescence, ORGANIC light emitting diodes
Abstract

The photooxidative stability of a series of doubly bridged anthracenes was evaluated after their preparation via twofold macrocyclization of a bis(resorcinyl)anthracene. Lightfastness correlates with the energy levels of the highest occupied molecular orbital (HOMO), resulting in superior stability of the tetraesters compared to the tetraethers. The lengths and steric demand of the linker only plays a minor role for the ester‐based compounds, which can be prepared in reasonable yields and thus tested in proof‐of‐concept organic light‐emitting diodes. Double ester‐bridging allows deep blue electro‐luminescence, highlighting the importance of the choice of the functional groups used for macrocyclization. [ABSTRACT FROM AUTHOR]

Published
2024
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23. PMS2CL interference leading to erroneous identification of a pathogenic PMS2 variant in Black patients

Author

Verma, Anurag, Verma, Shefali S., Bradford, Yuki, Brock, Ashlei, DerOhannessian, Stephanie, Dudek, Scott, Dunn, Joseph, Drivas, Theodore, Haubein, Ned, Hu-Sain, Khadijah, Judy, Renae, Kloter, Ashley, Ko, Yi-An, Livingstone, Meghan, Morrel, Linda, Morse, Colleen, Poindexter, Afiya, Risman, Marjorie, Tran, Teo, Vadivieso, Fred, Weaver, JoEllen, Rader, Daniel J., Ritchie, Marylyn D., Feldman, Michael D., Beechert, Christina, Forsythe, Caitlin, Fuller, Erin D., Gu, Zhenhua, Lattari, Michael, Lopez, Alexander, Overton, John D., Padilla, Maria Sotiropoulos, Pradhan, Manasi, Manoochehri, Kia, Schleicher, Thomas D., Widom, Louis, Wolf, Sarah E., Ulloa, Ricardo H., Averitt, Amelia, Banerjee, Nilanjana, Cantor, Michael, Li, Dadong, Malhotra, Sameer, Sharma, Deepika, Staples, Jeffrey, Bai, Xiaodong, Balasubramanian, Suganthi, Bao, Suying, Boutkov, Boris, Chen, Siying, Eom, Gisu, Habegger, Lukas, Hawes, Alicia, Khalid, Shareef, Krasheninina, Olga, Lanche, Rouel, Mansfield, Adam J., Maxwell, Evan K., Mitra, George, Nafde, Mona, O’Keeffe, Sean, Orelus, Max, Panea, Razvan, Polanco, Tommy, Rasool, Ayesha, Reid, Jeffrey G., Salerno, William, Staples, Jeffrey C., Sun, Kathie, Abecasis, Goncalo, Backman, Joshua, Damask, Amy, Dobbyn, Lee, Ferreira, Manuel Allen Revez, Ghosh, Arkopravo, Gillies, Christopher, Gurski, Lauren, Jorgenson, Eric, Kang, Hyun Min, Kessler, Michael, Kosmicki, Jack, Li, Alexander, Lin, Nan, Liu, Daren, Locke, Adam, Marchini, Jonathan, Marcketta, Anthony, Mbatchou, Joelle, Moscati, Arden, Paulding, Charles, Sidore, Carlo, Stahl, Eli, Watanabe, Kyoko, Ye, Bin, Zhang, Blair, Ziyatdinov, Andrey, Ayer, Ariane, Guvenek, Aysegul, Hindy, George, Coppola, Giovanni, Freudenberg, Jan, Bovijn, Jonas, Siminovitch, Katherine, Praveen, Kavita, Lotta, Luca A., Kapoor, Manav, Haas, Mary, Riaz, Moeen, Verweij, Niek, Sosina, Olukayode, Akbari, Parsa, Nakka, Priyanka, Gelfman, Sahar, Gokhale, Sujit, De, Tanima, Rajagopal, Veera, Shuldiner, Alan, Tzoneva, Gannie, Rodriguez-Flores, Juan, Chen, Esteban, Jones, Marcus B., LeBlanc, Michelle G., Mighty, Jason, Mitnaul, Lyndon J., Nishtala, Nirupama, Rana, Nadia, Hernandez, Jaimee, Baras, Aris, Deubler, Andrew, Economides, Aris, Cappadocia, Jacqueline, Aiello, Lisa B., Kelley, Michael J., Katona, Bryson W., and Maxwell, Kara N.

Published
2024
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28. Inference of Causal Relationships Between Genetic Risk Factors for Cardiometabolic Phenotypes and Female‐Specific Health Conditions

Author

Xiao, Brenda, primary, Velez Edwards, Digna R., additional, Lucas, Anastasia, additional, Drivas, Theodore, additional, Gray, Kathryn, additional, Keating, Brendan, additional, Weng, Chunhua, additional, Jarvik, Gail P., additional, Hakonarson, Hakon, additional, Kottyan, Leah, additional, Elhadad, Noemie, additional, Wei, Wei‐Qi, additional, Luo, Yuan, additional, Kim, Dokyoon, additional, Ritchie, Marylyn, additional, Verma, Shefali Setia, additional, Abecasis, Goncalo, additional, Baras, Aris, additional, Cantor, Michael, additional, Coppola, Giovanni, additional, Deubler, Andrew, additional, Economides, Aris, additional, Karalis, Katia, additional, Lotta, Luca A., additional, Overton, John D., additional, Reid, Jeffrey G., additional, Siminovitch, Katherine, additional, Shuldiner, Alan, additional, Beechert, Christina, additional, Forsythe, Caitlin, additional, Fuller, Erin D., additional, Gu, Zhenhua, additional, Lattari, Michael, additional, Lopez, Alexander, additional, Padilla, Maria Sotiropoulos, additional, Pradhan, Manasi, additional, Manoochehri, Kia, additional, Schleicher, Thomas D., additional, Widom, Louis, additional, Wolf, Sarah E., additional, Ulloa, Ricardo H., additional, Averitt, Amelia, additional, Banerjee, Nilanjana, additional, Li, Dadong, additional, Malhotra, Sameer, additional, Sharma, Deepika, additional, Staples, Jeffrey, additional, Bai, Xiaodong, additional, Balasubramanian, Suganthi, additional, Bao, Suying, additional, Boutkov, Boris, additional, Chen, Siying, additional, Eom, Gisu, additional, Habegger, Lukas, additional, Hawes, Alicia, additional, Khalid, Shareef, additional, Krasheninina, Olga, additional, Lanche, Rouel, additional, Mansfield, Adam J., additional, Maxwell, Evan K., additional, Mitra, George, additional, Nafde, Mona, additional, O’Keeffe, Sean, additional, Orelus, Max, additional, Panea, Razvan, additional, Polanco, Tommy, additional, Rasool, Ayesha, additional, Salerno, William, additional, Staples, Jeffrey C., additional, Sun, Kathie, additional, Backman, Joshua, additional, Damask, Amy, additional, Dobbyn, Lee, additional, Ferreira, Manuel Allen Revez, additional, Ghosh, Arkopravo, additional, Gillies, Christopher, additional, Gurski, Lauren, additional, Jorgenson, Eric, additional, Kang, Hyun Min, additional, Kessler, Michael, additional, Kosmicki, Jack, additional, Li, Alexander, additional, Lin, Nan, additional, Liu, Daren, additional, Locke, Adam, additional, Marchini, Jonathan, additional, Marcketta, Anthony, additional, Mbatchou, Joelle, additional, Moscati, Arden, additional, Paulding, Charles, additional, Sidore, Carlo, additional, Stahl, Eli, additional, Watanabe, Kyoko, additional, Ye, Bin, additional, Zhang, Blair, additional, Ziyatdinov, Andrey, additional, Ayer, Ariane, additional, Guvenek, Aysegul, additional, Hindy, George, additional, Freudenberg, Jan, additional, Bovijn, Jonas, additional, Praveen, Kavita, additional, Kapoor, Manav, additional, Haas, Mary, additional, Riaz, Moeen, additional, Verweij, Niek, additional, Sosina, Olukayode, additional, Akbari, Parsa, additional, Nakka, Priyanka, additional, Gelfman, Sahar, additional, Gokhale, Sujit, additional, De, Tanima, additional, Rajagopal, Veera, additional, Tzoneva, Gannie, additional, Rodriguez‐Flores, Juan, additional, Chim, Shek Man, additional, Donato, Valerio, additional, Fernandez, Daniel, additional, Gatta, Giusy Della, additional, Di Gioia, Alessandro, additional, Howell, Kristen, additional, Khrimian, Lori, additional, Kim, Minhee, additional, Martinez, Hector, additional, Miloscio, Lawrence, additional, Nunez, Sheilyn, additional, Pavlopoulos, Elias, additional, Persaud, Trikaldarshi, additional, Chen, Esteban, additional, Jones, Marcus B., additional, LeBlanc, Michelle G., additional, Mighty, Jason, additional, Mitnaul, Lyndon J., additional, Nishtala, Nirupama, additional, and Rana, Nadia, additional

Published
2023
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29. The Highly Operational Team (HOT) toward f-Block Materials

Author

Park, Kyoung Chul, Liu, Yuan, Khashab, Niveen M., Hudson, Zachary M., Goicoechea, Jose M., Gruetzmacher, Hansjorg, Mueller, Christian, Ivanova, Mariya E., Rose, Philipp, Abdi, Fatwa F., Brendelberger, Stefan, Duran, Ines, Fantz, Ursel, Harting, Jens, Ding, Yong, Han, Xinbao, Yu, Jin, Westerlind, Ulrika, Nau, Werner M., Kalenius, Elina, Lee, Tung-Chun, Cha, Jin Wook, Park, Jin-Soo, Vojvodic, Aleksandra, Wu, Jianzhong, Meng, Xing, Liu, Chengyuan, Pan, Yang, Pakulski, Dawid, Samori, Paolo, Ciesielski, Artur, Zhao, Wengao, Wang, Kuan, Fan, Xinming, Yan, Pengfei, Yang, Yong, Xu, Lijin, Lei, Ming, Walsh, Patrick J., Prato, Maurizio, Zhang, Kai, Xia, Haiping, Giri, Ramesh, Wang, Wei, Wang, Hui, Ghorai, Prasanta, Hong, Sungwoo, Hensen, Emiel J. M., Kosinov, Nikolay, Wu, Hao, Yu, Jia, Wang, Kai, Zhang, Xiao-Hong, Gao, Ge, Liang, Gaolin, Zhang, Xu, Jiang, Nan, Fu, Yongzhu, Ohtani, Ryo, Ohba, Masaaki, Lee, Taehwan, Jung, Jaehoon, Lee, Jeong-Hwan, Lee, Min Hyung, Dou, Chuandong, Wang, Peifang, Ao, Yanhui, Luo, Junhua, Freire, Felix, Liu, Xiaohua, Feng, Xiaoming, Yu, Jie, Pu, Kanyi, Gao, De-Wei, Li, Jin-Jin, Liu, Peng, Zhou, Yin-Ning, Pan, Yun-Xiang, Li, Si, Gao, Guang-Gang, Zang, Shuang-Quan, Lee, Jeongjin, Li, Mingle, Liu, Xiaogang, Park, Jae Hyung, Kim, Jong Seung, Kumagai, Naoya, Li, Shuang, Thomas, Arne, Pachfule, Pradip, Zhao, Chuan, Pan, Yu, Hu, Anjun, Long, Jianping, Chang, Ze, Mulder, Monique P. C., Yang, Limin, Cai, Quan, Liu, Zhaowei, Nash, Michael A., Barbour, Leonard J., Walker, Alice R., Nguyen, Hien M., Zhao, Chuanqi, Liu, Zhengwei, Qu, Xiaogang, Dobbek, Holger, Cao, Chun-Shuai, Zhao, Bin, Zhang, Zhenjie, Wen, Rui, Zhang, Xue-Qiang, Yang, Dayong, Zuo, Xiaolei, Liu, Peifeng, Wu, Hongwei, Hadlington, Terrance J., Dong, Shunxi, Yan, Wenfu, Yu, Jihong, Zhang, Lu, Sun, Licheng, Hou, Jungang, Kwon, Jang Hyuk, Song, Yuefeng, Wang, Guoxiong, Liu, Yongzhuang, Yu, Haipeng, Ge, Shaozhong, Dickschat, Jeroen S., Dreuw, Andreas, Freudenberg, Jan, Casado, Juan, Bunz, Uwe H. F., Takezawa, Hiroki, Sato, Sota, Fujita, Makoto, Oguri, Hiroki, Fu, Aiping, Zhang, Yuexia, Xie, Hua, Li, Jun, Hu, Han-Shi, Jiang, Ling, Seshadri, Ram, Cheetham, Anthony K., Melchiorre, Paolo, Xia, Ying, Magauer, Thomas, Wang, Wang, Brown, M. Kevin, Waser, Jerome, Baraban, Joshua H., Umemoto, Teruo, Hammond, Gerald B., Bures, Jordi, Cornella, Josep, Kazmaier, Uli, Park, Kyoung Chul, Liu, Yuan, Khashab, Niveen M., Hudson, Zachary M., Goicoechea, Jose M., Gruetzmacher, Hansjorg, Mueller, Christian, Ivanova, Mariya E., Rose, Philipp, Abdi, Fatwa F., Brendelberger, Stefan, Duran, Ines, Fantz, Ursel, Harting, Jens, Ding, Yong, Han, Xinbao, Yu, Jin, Westerlind, Ulrika, Nau, Werner M., Kalenius, Elina, Lee, Tung-Chun, Cha, Jin Wook, Park, Jin-Soo, Vojvodic, Aleksandra, Wu, Jianzhong, Meng, Xing, Liu, Chengyuan, Pan, Yang, Pakulski, Dawid, Samori, Paolo, Ciesielski, Artur, Zhao, Wengao, Wang, Kuan, Fan, Xinming, Yan, Pengfei, Yang, Yong, Xu, Lijin, Lei, Ming, Walsh, Patrick J., Prato, Maurizio, Zhang, Kai, Xia, Haiping, Giri, Ramesh, Wang, Wei, Wang, Hui, Ghorai, Prasanta, Hong, Sungwoo, Hensen, Emiel J. M., Kosinov, Nikolay, Wu, Hao, Yu, Jia, Wang, Kai, Zhang, Xiao-Hong, Gao, Ge, Liang, Gaolin, Zhang, Xu, Jiang, Nan, Fu, Yongzhu, Ohtani, Ryo, Ohba, Masaaki, Lee, Taehwan, Jung, Jaehoon, Lee, Jeong-Hwan, Lee, Min Hyung, Dou, Chuandong, Wang, Peifang, Ao, Yanhui, Luo, Junhua, Freire, Felix, Liu, Xiaohua, Feng, Xiaoming, Yu, Jie, Pu, Kanyi, Gao, De-Wei, Li, Jin-Jin, Liu, Peng, Zhou, Yin-Ning, Pan, Yun-Xiang, Li, Si, Gao, Guang-Gang, Zang, Shuang-Quan, Lee, Jeongjin, Li, Mingle, Liu, Xiaogang, Park, Jae Hyung, Kim, Jong Seung, Kumagai, Naoya, Li, Shuang, Thomas, Arne, Pachfule, Pradip, Zhao, Chuan, Pan, Yu, Hu, Anjun, Long, Jianping, Chang, Ze, Mulder, Monique P. C., Yang, Limin, Cai, Quan, Liu, Zhaowei, Nash, Michael A., Barbour, Leonard J., Walker, Alice R., Nguyen, Hien M., Zhao, Chuanqi, Liu, Zhengwei, Qu, Xiaogang, Dobbek, Holger, Cao, Chun-Shuai, Zhao, Bin, Zhang, Zhenjie, Wen, Rui, Zhang, Xue-Qiang, Yang, Dayong, Zuo, Xiaolei, Liu, Peifeng, Wu, Hongwei, Hadlington, Terrance J., Dong, Shunxi, Yan, Wenfu, Yu, Jihong, Zhang, Lu, Sun, Licheng, Hou, Jungang, Kwon, Jang Hyuk, Song, Yuefeng, Wang, Guoxiong, Liu, Yongzhuang, Yu, Haipeng, Ge, Shaozhong, Dickschat, Jeroen S., Dreuw, Andreas, Freudenberg, Jan, Casado, Juan, Bunz, Uwe H. F., Takezawa, Hiroki, Sato, Sota, Fujita, Makoto, Oguri, Hiroki, Fu, Aiping, Zhang, Yuexia, Xie, Hua, Li, Jun, Hu, Han-Shi, Jiang, Ling, Seshadri, Ram, Cheetham, Anthony K., Melchiorre, Paolo, Xia, Ying, Magauer, Thomas, Wang, Wang, Brown, M. Kevin, Waser, Jerome, Baraban, Joshua H., Umemoto, Teruo, Hammond, Gerald B., Bures, Jordi, Cornella, Josep, and Kazmaier, Uli

Abstract

QC 20240206

Published
2023
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30. Doubly Bridged Anthracenes: Blue Emitters for OLEDs

Author

Ludwig, Philipp, Mayer, Jacob Carlo, Ahrens, Lukas, Rominger, Frank, Ligorio, Giovanni, Hermerschmidt, Felix, List-Kratochvil, Emil J.W., Freudenberg, Jan, Bunz, Uwe, Ludwig, Philipp, Mayer, Jacob Carlo, Ahrens, Lukas, Rominger, Frank, Ligorio, Giovanni, Hermerschmidt, Felix, List-Kratochvil, Emil J.W., Freudenberg, Jan, and Bunz, Uwe

Abstract

The photooxidative stability of a series of doubly bridged anthracenes was evaluated after their preparation via twofold macrocyclization of a bis(resorcinyl)anthracene. Lightfastness correlates with the energy levels of the highest occupied molecular orbital (HOMO), resulting in superior stability of the tetraesters compared to the tetraethers. The lengths and steric demand of the linker only plays a minor role for the ester-based compounds, which can be prepared in reasonable yields and thus tested in proof-of-concept organic light-emitting diodes. Double ester-bridging allows deep blue electro-luminescence, highlighting the importance of the choice of the functional groups used for macrocyclization., Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659, Studienstiftung des Deutschen Volkes http://dx.doi.org/10.13039/501100004350, Peer Reviewed

Published
2023

31. Hexakis‐TIPS‐Alkynylated Nonacenes: Persistent and Processible.

Author

Zeitter, Nico, Hippchen, Nikolai, Weidlich, Anna, Jäger, Patrick, Ludwig, Philipp, Rominger, Frank, Dreuw, Andreas, Freudenberg, Jan, and Bunz, Uwe H. F.

Subjects
ELECTRON paramagnetic resonance spectroscopy, ULTRAVIOLET-visible spectroscopy, X-ray spectroscopy, CRYSTAL structure, FIELD-effect transistors
Abstract

Four substituted nonacenes were prepared and characterized by UV‐vis and EPR spectroscopy and X‐ray crystallography. The compounds are the most stable and soluble nonacenes to date – due to six strategically placed triisopropylsilyl(TIPS)‐ethynyl groups. They are stable for several weeks in the solid state. In dilute solution their half‐life is 5–9 h. Crystal structure analyses of two nonacenes prove their structures. A nonacene derivative was tested in a solution‐processed transistor and exhibits ambipolar charge transport (μe=0.007 cm2/Vs; μh=0.023 cm2/Vs). [ABSTRACT FROM AUTHOR]

Published
2023
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32. The Radical Anion and Dianion of Benzo[3,4]cyclobuta[1,2-b]phenazine

Author

Wu, Zhu, primary, Hippchen, Nikolai, additional, Han, Jie, additional, Ji, Lei, additional, Friedrich, Alexandra, additional, Krummenacher, Ivo, additional, Braunschweig, Holger, additional, Krebs, Johannes, additional, Moos, Michael, additional, Biegger, Philipp, additional, Tverskoy, Olena, additional, Maier, Steffen, additional, Lambert, Christoph, additional, Dreuw, Andreas, additional, Marder, Todd B., additional, Freudenberg, Jan, additional, and Bunz, Uwe H. F., additional

Published
2023
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37. Azaarenes: 13 Rings in a Row by Cyclopentannulation

Author

Maier, Steffen, primary, Hippchen, Nikolai, additional, Jester, Fabian, additional, Dodds, Marcus, additional, Weber, Michel, additional, Skarjan, Leon, additional, Rominger, Frank, additional, Freudenberg, Jan, additional, and Bunz, Uwe H. F., additional

Published
2022
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38. The Radical Anion, Dianion and Electron Transport Properties of Tetraiodotetraazapentacene

Author

Wiesner, Thomas, primary, Wu, Zhu, additional, Han, Jie, additional, Ji, Lei, additional, Friedrich, Alexandra, additional, Krummenacher, Ivo, additional, Moos, Michael, additional, Lambert, Christoph, additional, Braunschweig, Holger, additional, Rudin, Benjamin, additional, Reiss, Hilmar, additional, Tverskoy, Olena, additional, Rominger, Frank, additional, Dreuw, Andreas, additional, Marder, Todd B., additional, Freudenberg, Jan, additional, and Bunz, Uwe H. F., additional

Published
2022
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40. Substituted Cyclopentannulated Tetraazapentacenes

Author

Maier, Steffen, primary, Heckershoff, Robin, additional, Hippchen, Nikolai, additional, Brödner, Kerstin, additional, Rominger, Frank, additional, Freudenberg, Jan, additional, Hashmi, A. Stephen K., additional, and Bunz, Uwe H. F., additional

Published
2022
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41. Dimerisierung eines reaktiven Azaacen Diradikals: Synthese eines kovalenten Azaacen‐Käfigs.

Author

Fuchs, Kathleen, Medina Rivero, Samara, Weidlich, Anna, Rominger, Frank, Israel, Noel, Popov, Alexey A., Dreuw, Andreas, Freudenberg, Jan, Casado, Juan, and Bunz, Uwe H. F.

Subjects
NUCLEAR magnetic resonance
Abstract

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023
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42. Etheno‐bridged Azaacene Spiro Dimers.

Author

Ahrens, Lukas, Rominger, Frank, Freudenberg, Jan, and Bunz, Uwe H. F.

Subjects
STRUCTURAL stability, SINGLE crystals, CRYSTAL structure, DIMERS
Abstract

We present the synthesis of two sets of spiro‐connected azaacene dimers. Their geometry and electronic coupling are critically determined by a secondary linker, i. e. an etheno‐ and an ethano‐bridge. The core fragment of the etheno‐bridged dimer corresponds to a conformationally locked cis‐stilbene. Optoelectronic properties, single crystal X‐ray structures and stability with respect to oxidation of the conjugated and non‐conjugated dimers are reported and compared. The conjugated dimers exhibit smaller optical gaps and bathochromically shifted absorption maxima, but are prone to unexpected oxygen addition, dearomatizing one of the azaacene substituents. [ABSTRACT FROM AUTHOR]

Published
2023
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44. On‐Surface Debromination of 2,3‐Bis(dibromomethyl)‐ and 2,3‐Bis(bromomethyl)naphthalene: Dimerization or Polymerization?

Author

Tang, Yanning, primary, Ejlli, Barbara, additional, Niu, Kaifeng, additional, Li, Xuechao, additional, Hao, Zhengming, additional, Xu, Chaojie, additional, Zhang, Haiming, additional, Rominger, Frank, additional, Freudenberg, Jan, additional, Bunz, Uwe H. F., additional, Muellen, Klaus, additional, and Chi, Lifeng, additional

Published
2022
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48. On‐Surface Debromination of 2,3‐Bis(dibromomethyl)‐ and 2,3‐Bis(bromomethyl)naphthalene: Dimerization or Polymerization?

Author

Chi, Lifeng, primary, Tang, Yanning, additional, Ejlli, Barbara, additional, Niu, Kaifeng, additional, Li, Xuechao, additional, Hao, Zhengming, additional, Xu, Chaojie, additional, Zhang, Haiming, additional, Rominger, Frank, additional, Freudenberg, Jan, additional, Uwe, Bunz H.F., additional, and Muellen, Klaus, additional

Published
2022
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49. Cyclopentannulated Dihydrotetraazapentacenes

Author

Heckershoff, Robin, primary, Maier, Steffen, additional, Wurm, Thomas, additional, Biegger, Philipp, additional, Brödner, Kerstin, additional, Krämer, Petra, additional, Hoffmann, Marvin T., additional, Eberle, Lukas, additional, Stein, Jana, additional, Rominger, Frank, additional, Rudolph, Matthias, additional, Freudenberg, Jan, additional, Dreuw, Andreas, additional, Hashmi, A. Stephen K., additional, and Bunz, Uwe H. F., additional

Published
2022
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