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3. Revealing the Structural Coloration of Self-Assembled Chitin Nanocrystal Films

Author

Narkevicius, Aurimas, Parker, Richard M, Ferrer-Orri, Jordi, Parton, Thomas G, Lu, Zihao, Van De Kerkhof, Gea T, Frka-Petesic, Bruno, Vignolini, Silvia, Narkevicius, Aurimas [0000-0003-0787-6489], Parker, Richard [0000-0002-4096-9161], Ferrer-Orri, Jordi [0000-0002-0432-5932], Parton, Thomas [0000-0001-7153-1042], Lu, Zihao [0000-0002-6500-6732], van de Kerkhof, Gerda [0000-0003-2427-2740], Frka-Petesic, Bruno [0000-0001-5002-5685], Vignolini, Silvia [0000-0003-0664-1418], Apollo - University of Cambridge Repository, Parker, Richard M [0000-0002-4096-9161], Parton, Thomas G [0000-0001-7153-1042], and van de Kerkhof, Gea T [0000-0003-2427-2740]

Subjects
liquid crystals, nanocrystals, Suspensions, Nanoparticles, Chitin, self-assembly, structural color
Abstract

Funder: Lord Lewis Research Studentship in Chemistry, The structural coloration of arthropods often arises from helicoidal structures made primarily of chitin. Although it is possible to achieve analogous helicoidal architectures by exploiting the self-assembly of chitin nanocrystals (ChNCs), to date no evidence of structural coloration has been reported from such structures. Previous studies are identified to have been constrained by both the experimental inability to access sub-micrometer helicoidal pitches and the intrinsically low birefringence of crystalline chitin. To expand the range of accessible pitches, here, ChNCs are isolated from two phylogenetically distinct sources of α-chitin, namely fungi and shrimp, while to increase the birefringence, an in situ alkaline treatment is performed, increasing the intensity of the reflected color by nearly two orders of magnitude. By combining this treatment with precise control over ChNC suspension formulation, structurally colored chitin-based films are demonstrated with reflection tunable from blue to near infrared.

Published
2022

4. Tuning the Color of Photonic Glass Pigments by Thermal Annealing

Author

Wang, Zhen, Li, Ruiting, Zhang, Yating, Chan, Chun Lam Clement, Haataja, Johannes S, Yu, Kui, Parker, Richard M, Vignolini, Silvia, Wang, Zhen [0000-0002-0331-8271], Li, Ruiting [0000-0002-2132-9054], Zhang, Yating [0000-0002-7811-5372], Chan, Chun Lam Clement [0000-0002-5812-8440], Haataja, Johannes S [0000-0002-4523-4199], Yu, Kui [0000-0003-3673-8843], Parker, Richard M [0000-0002-4096-9161], Vignolini, Silvia [0000-0003-0664-1418], and Apollo - University of Cambridge Repository

Subjects
inverse photonic glasses, thermal annealing, block copolymers, Mechanics of Materials, Mechanical Engineering, confinement, General Materials Science, structural color
Abstract

Thermal or solvent annealing is commonly employed to enhance phase separation and remove defects in block copolymer (BCP) films, leading to well resolved nanostructures. Annealing is of particular importance for photonic BCP materials, where large, well-ordered lamellar domains are required to generate strong reflections at visible wavelengths. However, such strategies have not been considered for porous BCP systems, such as inverse photonic glasses, where the structure (and thus the optical response) is no longer defined solely by the chemical compatibility of the blocks, but by the size and arrangement of voids within the BCP matrix. In this study, we demonstrate how the concept of "thermal annealing" can be applied to porous bottlebrush block copolymer (BBCP) microparticles with a photonic glass architecture, enabling their coloration to be tuned from blue to red. By comparing biocompatible BBCPs with similar composition, but different thermal behavior, we show that this process is driven by both a temperature-induced softening of the BBCP matrix (i.e., polymer mobility) and the absence of microphase separation (enabling diffusion-induced swelling of the pores). Lastly, this concept was applied towards the production of a thermochromic patterned hydrogel, exemplifying the potential of such responsive biocompatible photonic-glass pigments towards smart labelling or anticounterfeiting applications. This article is protected by copyright. All rights reserved., This work was supported by: 1] The European Research Council [ERC-2014-STG H2020639088; ERC-2017-POC 790518] 2] The Biotechnology and Biological Science Research Council [BBSRC David Phillips Fellowship BB/K014617/1; BB/V00364X/1] 3] The Engineering and Physical Sciences Research Council [EPSRC EP/N016920/1; EP/R511675/1] 4] The Royal Society [IE160420] 5] The European Union Horizon 2020 Research and Innovation Program (Marie Skłodowska-Curie Actions Grant No. 893136) 6] The Emil Aaltonen Foundation 7] CSC Cambridge Scholarship 8] Croucher Cambridge International Scholarship.

Published
2023
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5. The Liverpool alcohol-related liver disease algorithm identifies twice as many emergency admissions compared to standard methods when applied to Hospital Episode Statistics for England

Author

Dhanda, Ashwin, Bodger, Keith, Hood, Steve, Henn, Clive, Allison, Michael, Amasiatu, Chioma, Burton, Robyn, Cramp, Matthew, Forrest, Ewan, Khetani, Meetal, MacGilchrist, Alastair, Masson, Steven, Parker, Richard, Sheron, Nick, Simpson, Ken, Vergis, Nikhil, White, Martin, BASL ARLD SIG National Service Evaluation Group, Dhanda, Ashwin [0000-0002-0523-0193], Bodger, Keith [0000-0002-1825-3239], Forrest, Ewan [0000-0002-7293-2574], Masson, Steven [0000-0003-1041-9844], Parker, Richard [0000-0003-4888-8670], and Apollo - University of Cambridge Repository

Subjects
Hospitalization, England, Liver Diseases, Humans, COVID-19, Pandemics, Hospitals, Algorithms
Abstract

BACKGROUND: Emergency admissions in England for alcohol-related liver disease (ArLD) have increased steadily for decades. Statistics based on administrative data typically focus on the ArLD-specific code as the primary diagnosis and are therefore at risk of excluding ArLD admissions defined by other coding combinations. AIM: To deploy the Liverpool ArLD Algorithm (LAA), which accounts for alternative coding patterns (e.g., ArLD secondary diagnosis with alcohol/liver-related primary diagnosis), to national and local datasets in the context of studying trends in ArLD admissions before and during the COVID-19 pandemic. METHODS: We applied the standard approach and LAA to Hospital Episode Statistics for England (2013-21). The algorithm was also deployed at 28 hospitals to discharge coding for emergency admissions during a common 7-day period in 2019 and 2020, in which eligible patient records were reviewed manually to verify the diagnosis and extract data. RESULTS: Nationally, LAA identified approximately 100% more monthly emergency admissions from 2013 to 2021 than the standard method. The annual number of ArLD-specific admissions increased by 30.4%. Of 39,667 admissions in 2020/21, only 19,949 were identified with standard approach, an estimated admission cost of £70 million in under-recorded cases. Within 28 local hospital datasets, 233 admissions were identified using the standard approach and a further 250 locally verified cases using the LAA (107% uplift). There was an 18% absolute increase in ArLD admissions in the seven-day evaluation period in 2020 versus 2019. There were no differences in disease severity or mortality, or in the proportion of admissions with decompensation of cirrhosis or alcoholic hepatitis. CONCLUSIONS: The LAA can be applied successfully to local and national datasets. It consistently identifies approximately 100% more cases than the standard coding approach. The algorithm has revealed the true extent of ArLD admissions. The pandemic has compounded a long-term rise in ArLD admissions and mortality.

Published
2022
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8. Extra‐hepatic Morbidity and Mortality in Alcohol‐related Liver Disease: Systematic Review and Meta‐analysis

Author

Theodoreson, Mark D., primary, Aithal, Guruprasad P., additional, Allison, Michael, additional, Brahmania, Mayur, additional, Forrest, Ewan, additional, Hagström, Hannes, additional, Johansen, Stine, additional, Krag, Aleksander, additional, Likhitsup, Alisa, additional, Masson, Steven, additional, McCune, Anne, additional, Rajoriya, Neil, additional, Thiele, Maja, additional, Rowe, Ian A., additional, and Parker, Richard, additional

Published
2023
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12. Structurally Colored Radiative Cooling Cellulosic Films

Author

Zhu, Wenkai, primary, Droguet, Benjamin, additional, Shen, Qingchen, additional, Zhang, Yun, additional, Parton, Thomas G., additional, Shan, Xiwei, additional, Parker, Richard M., additional, De Volder, Michael F. L., additional, Deng, Tao, additional, Vignolini, Silvia, additional, and Li, Tian, additional

Published
2022
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16. Self‐reported impact of developmental stuttering across the lifespan

Author

Boyce, Jessica O., primary, Jackson, Victoria E., additional, van Reyk, Olivia, additional, Parker, Richard, additional, Vogel, Adam P., additional, Eising, Else, additional, Horton, Sarah E., additional, Gillespie, Nathan A., additional, Scheffer, Ingrid E., additional, Amor, David J., additional, Hildebrand, Michael S., additional, Fisher, Simon E., additional, Martin, Nicholas G., additional, Reilly, Sheena, additional, Bahlo, Melanie, additional, and Morgan, Angela T., additional

Published
2022
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22. Can network analysis of self‐reported psychopathology shed light on the core phenomenology of bipolar disorders in adolescents and young adults?

Author

Scott, Jan, primary, Crouse, Jacob J, additional, Ho, Nicholas, additional, Carpenter, Joanne, additional, Martin, Nicholas, additional, Medland, Sarah, additional, Parker, Richard, additional, Byrne, Enda, additional, Couvy‐Duchesne, Baptiste, additional, Mitchell, Brittany, additional, Merikangas, Kathleen, additional, Gillespie, Nathan A., additional, and Hickie, Ian, additional

Published
2021
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26. Shared genetic risk between eating disorder‐ and substance‐use‐related phenotypes: Evidence from genome‐wide association studies

Author

Munn‐Chernoff, Melissa A., primary, Johnson, Emma C., additional, Chou, Yi‐Ling, additional, Coleman, Jonathan R.I., additional, Thornton, Laura M., additional, Walters, Raymond K., additional, Yilmaz, Zeynep, additional, Baker, Jessica H., additional, Hübel, Christopher, additional, Gordon, Scott, additional, Medland, Sarah E., additional, Watson, Hunna J., additional, Gaspar, Héléna A., additional, Bryois, Julien, additional, Hinney, Anke, additional, Leppä, Virpi M., additional, Mattheisen, Manuel, additional, Ripke, Stephan, additional, Yao, Shuyang, additional, Giusti‐Rodríguez, Paola, additional, Hanscombe, Ken B., additional, Adan, Roger A.H., additional, Alfredsson, Lars, additional, Ando, Tetsuya, additional, Andreassen, Ole A., additional, Berrettini, Wade H., additional, Boehm, Ilka, additional, Boni, Claudette, additional, Boraska Perica, Vesna, additional, Buehren, Katharina, additional, Burghardt, Roland, additional, Cassina, Matteo, additional, Cichon, Sven, additional, Clementi, Maurizio, additional, Cone, Roger D., additional, Courtet, Philippe, additional, Crow, Scott, additional, Crowley, James J., additional, Danner, Unna N., additional, Davis, Oliver S.P., additional, de Zwaan, Martina, additional, Dedoussis, George, additional, Degortes, Daniela, additional, DeSocio, Janiece E., additional, Dick, Danielle M., additional, Dikeos, Dimitris, additional, Dina, Christian, additional, Dmitrzak‐Weglarz, Monika, additional, Docampo, Elisa, additional, Duncan, Laramie E., additional, Egberts, Karin, additional, Ehrlich, Stefan, additional, Escaramís, Geòrgia, additional, Esko, Tõnu, additional, Estivill, Xavier, additional, Farmer, Anne, additional, Favaro, Angela, additional, Fernández‐Aranda, Fernando, additional, Fichter, Manfred M., additional, Fischer, Krista, additional, Föcker, Manuel, additional, Foretova, Lenka, additional, Forstner, Andreas J., additional, Forzan, Monica, additional, Franklin, Christopher S., additional, Gallinger, Steven, additional, Giegling, Ina, additional, Giuranna, Johanna, additional, Gonidakis, Fragiskos, additional, Gorwood, Philip, additional, Gratacos Mayora, Monica, additional, Guillaume, Sébastien, additional, Guo, Yiran, additional, Hakonarson, Hakon, additional, Hatzikotoulas, Konstantinos, additional, Hauser, Joanna, additional, Hebebrand, Johannes, additional, Helder, Sietske G., additional, Herms, Stefan, additional, Herpertz‐Dahlmann, Beate, additional, Herzog, Wolfgang, additional, Huckins, Laura M., additional, Hudson, James I., additional, Imgart, Hartmut, additional, Inoko, Hidetoshi, additional, Janout, Vladimir, additional, Jiménez‐Murcia, Susana, additional, Julià, Antonio, additional, Kalsi, Gursharan, additional, Kaminská, Deborah, additional, Karhunen, Leila, additional, Karwautz, Andreas, additional, Kas, Martien J.H., additional, Kennedy, James L., additional, Keski‐Rahkonen, Anna, additional, Kiezebrink, Kirsty, additional, Kim, Youl‐Ri, additional, Klump, Kelly L., additional, Knudsen, Gun Peggy S., additional, La Via, Maria C., additional, Le Hellard, Stephanie, additional, Levitan, Robert D., additional, Li, Dong, additional, Lilenfeld, Lisa, additional, Lin, Bochao Danae, additional, Lissowska, Jolanta, additional, Luykx, Jurjen, additional, Magistretti, Pierre J., additional, Maj, Mario, additional, Mannik, Katrin, additional, Marsal, Sara, additional, Marshall, Christian R., additional, Mattingsdal, Morten, additional, McDevitt, Sara, additional, McGuffin, Peter, additional, Metspalu, Andres, additional, Meulenbelt, Ingrid, additional, Micali, Nadia, additional, Mitchell, Karen, additional, Monteleone, Alessio Maria, additional, Monteleone, Palmiero, additional, Nacmias, Benedetta, additional, Navratilova, Marie, additional, Ntalla, Ioanna, additional, O'Toole, Julie K., additional, Ophoff, Roel A., additional, Padyukov, Leonid, additional, Palotie, Aarno, additional, Pantel, Jacques, additional, Papezova, Hana, additional, Pinto, Dalila, additional, Rabionet, Raquel, additional, Raevuori, Anu, additional, Ramoz, Nicolas, additional, Reichborn‐Kjennerud, Ted, additional, Ricca, Valdo, additional, Ripatti, Samuli, additional, Ritschel, Franziska, additional, Roberts, Marion, additional, Rotondo, Alessandro, additional, Rujescu, Dan, additional, Rybakowski, Filip, additional, Santonastaso, Paolo, additional, Scherag, André, additional, Scherer, Stephen W., additional, Schmidt, Ulrike, additional, Schork, Nicholas J., additional, Schosser, Alexandra, additional, Seitz, Jochen, additional, Slachtova, Lenka, additional, Slagboom, P. Eline, additional, Slof‐Op't Landt, Margarita C.T., additional, Slopien, Agnieszka, additional, Sorbi, Sandro, additional, Świątkowska, Beata, additional, Szatkiewicz, Jin P., additional, Tachmazidou, Ioanna, additional, Tenconi, Elena, additional, Tortorella, Alfonso, additional, Tozzi, Federica, additional, Treasure, Janet, additional, Tsitsika, Artemis, additional, Tyszkiewicz‐Nwafor, Marta, additional, Tziouvas, Konstantinos, additional, van Elburg, Annemarie A., additional, van Furth, Eric F., additional, Wagner, Gudrun, additional, Walton, Esther, additional, Widen, Elisabeth, additional, Zeggini, Eleftheria, additional, Zerwas, Stephanie, additional, Zipfel, Stephan, additional, Bergen, Andrew W., additional, Boden, Joseph M., additional, Brandt, Harry, additional, Crawford, Steven, additional, Halmi, Katherine A., additional, Horwood, L. John, additional, Johnson, Craig, additional, Kaplan, Allan S., additional, Kaye, Walter H., additional, Mitchell, James, additional, Olsen, Catherine M., additional, Pearson, John F., additional, Pedersen, Nancy L., additional, Strober, Michael, additional, Werge, Thomas, additional, Whiteman, David C., additional, Woodside, D. Blake, additional, Grove, Jakob, additional, Henders, Anjali K., additional, Larsen, Janne T., additional, Parker, Richard, additional, Petersen, Liselotte V., additional, Jordan, Jennifer, additional, Kennedy, Martin A., additional, Birgegård, Andreas, additional, Lichtenstein, Paul, additional, Norring, Claes, additional, Landén, Mikael, additional, Mortensen, Preben Bo, additional, Polimanti, Renato, additional, McClintick, Jeanette N., additional, Adkins, Amy E., additional, Aliev, Fazil, additional, Bacanu, Silviu‐Alin, additional, Batzler, Anthony, additional, Bertelsen, Sarah, additional, Biernacka, Joanna M., additional, Bigdeli, Tim B., additional, Chen, Li‐Shiun, additional, Clarke, Toni‐Kim, additional, Degenhardt, Franziska, additional, Docherty, Anna R., additional, Edwards, Alexis C., additional, Foo, Jerome C., additional, Fox, Louis, additional, Frank, Josef, additional, Hack, Laura M., additional, Hartmann, Annette M., additional, Hartz, Sarah M., additional, Heilmann‐Heimbach, Stefanie, additional, Hodgkinson, Colin, additional, Hoffmann, Per, additional, Hottenga, Jouke‐Jan, additional, Konte, Bettina, additional, Lahti, Jari, additional, Lahti‐Pulkkinen, Marius, additional, Lai, Dongbing, additional, Ligthart, Lannie, additional, Loukola, Anu, additional, Maher, Brion S., additional, Mbarek, Hamdi, additional, McIntosh, Andrew M., additional, McQueen, Matthew B., additional, Meyers, Jacquelyn L., additional, Milaneschi, Yuri, additional, Palviainen, Teemu, additional, Peterson, Roseann E., additional, Ryu, Euijung, additional, Saccone, Nancy L., additional, Salvatore, Jessica E., additional, Sanchez‐Roige, Sandra, additional, Schwandt, Melanie, additional, Sherva, Richard, additional, Streit, Fabian, additional, Strohmaier, Jana, additional, Thomas, Nathaniel, additional, Wang, Jen‐Chyong, additional, Webb, Bradley T., additional, Wedow, Robbee, additional, Wetherill, Leah, additional, Wills, Amanda G., additional, Zhou, Hang, additional, Boardman, Jason D., additional, Chen, Danfeng, additional, Choi, Doo‐Sup, additional, Copeland, William E., additional, Culverhouse, Robert C., additional, Dahmen, Norbert, additional, Degenhardt, Louisa, additional, Domingue, Benjamin W., additional, Frye, Mark A., additional, Gäebel, Wolfgang, additional, Hayward, Caroline, additional, Ising, Marcus, additional, Keyes, Margaret, additional, Kiefer, Falk, additional, Koller, Gabriele, additional, Kramer, John, additional, Kuperman, Samuel, additional, Lucae, Susanne, additional, Lynskey, Michael T., additional, Maier, Wolfgang, additional, Mann, Karl, additional, Männistö, Satu, additional, Müller‐Myhsok, Bertram, additional, Murray, Alison D., additional, Nurnberger, John I., additional, Preuss, Ulrich, additional, Räikkönen, Katri, additional, Reynolds, Maureen D., additional, Ridinger, Monika, additional, Scherbaum, Norbert, additional, Schuckit, Marc A., additional, Soyka, Michael, additional, Treutlein, Jens, additional, Witt, Stephanie H., additional, Wodarz, Norbert, additional, Zill, Peter, additional, Adkins, Daniel E., additional, Boomsma, Dorret I., additional, Bierut, Laura J., additional, Brown, Sandra A., additional, Bucholz, Kathleen K., additional, Costello, E. Jane, additional, de Wit, Harriet, additional, Diazgranados, Nancy, additional, Eriksson, Johan G., additional, Farrer, Lindsay A., additional, Foroud, Tatiana M., additional, Gillespie, Nathan A., additional, Goate, Alison M., additional, Goldman, David, additional, Grucza, Richard A., additional, Hancock, Dana B., additional, Harris, Kathleen Mullan, additional, Hesselbrock, Victor, additional, Hewitt, John K., additional, Hopfer, Christian J., additional, Iacono, William G., additional, Johnson, Eric O., additional, Karpyak, Victor M., additional, Kendler, Kenneth S., additional, Kranzler, Henry R., additional, Krauter, Kenneth, additional, Lind, Penelope A., additional, McGue, Matt, additional, MacKillop, James, additional, Madden, Pamela A.F., additional, Maes, Hermine H., additional, Magnusson, Patrik K.E., additional, Nelson, Elliot C., additional, Nöthen, Markus M., additional, Palmer, Abraham A., additional, Penninx, Brenda W.J.H., additional, Porjesz, Bernice, additional, Rice, John P., additional, Rietschel, Marcella, additional, Riley, Brien P., additional, Rose, Richard J., additional, Shen, Pei‐Hong, additional, Silberg, Judy, additional, Stallings, Michael C., additional, Tarter, Ralph E., additional, Vanyukov, Michael M., additional, Vrieze, Scott, additional, Wall, Tamara L., additional, Whitfield, John B., additional, Zhao, Hongyu, additional, Neale, Benjamin M., additional, Wade, Tracey D., additional, Heath, Andrew C., additional, Montgomery, Grant W., additional, Martin, Nicholas G., additional, Sullivan, Patrick F., additional, Kaprio, Jaakko, additional, Breen, Gerome, additional, Gelernter, Joel, additional, Edenberg, Howard J., additional, Bulik, Cynthia M., additional, and Agrawal, Arpana, additional

Published
2020
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28. Visual Appearance of Chiral Nematic Cellulose‐Based Photonic Films: Angular and Polarization Independent Color Response with a Twist

Author

Chan, Chun Lam Clement, primary, Bay, Mélanie M., additional, Jacucci, Gianni, additional, Vadrucci, Roberto, additional, Williams, Cyan A., additional, de Kerkhof, Gea T., additional, Parker, Richard M., additional, Vynck, Kevin, additional, Frka‐Petesic, Bruno, additional, and Vignolini, Silvia, additional

Published
2019
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31. Electrostatically Directed Self-Assembly of Ultrathin Supramolecular Polymer Microcapsules

Author

Parker, Richard M, Zhang, Jing, Zheng, Yu, Coulston, Roger J, Smith, Clive A, Salmon, Andrew R, Yu, Ziyi, Scherman, Oren A, Abell, Chris, Parker, Richard [0000-0002-4096-9161], Yu, Ziyi [0000-0003-4420-5836], Scherman, Oren [0000-0001-8032-7166], Abell, Chris [0000-0001-9174-1987], and Apollo - University of Cambridge Repository

Subjects
microcapsules, microstructures, microfluidics, self-assembly, Full Papers, supramolecular materials
Abstract

Supramolecular self-assembly offers routes to challenging architectures on the molecular and macroscopic scale. Coupled with microfluidics it has been used to make microcapsules-where a 2D sheet is shaped in 3D, encapsulating the volume within. In this paper, a versatile methodology to direct the accumulation of capsule-forming components to the droplet interface using electrostatic interactions is described. In this approach, charged copolymers are selectively partitioned to the microdroplet interface by a complementary charged surfactant for subsequent supramolecular cross-linking via cucurbit[8]uril. This dynamic assembly process is employed to selectively form both hollow, ultrathin microcapsules and solid microparticles from a single solution. The ability to dictate the distribution of a mixture of charged copolymers within the microdroplet, as demonstrated by the single-step fabrication of distinct core-shell microcapsules, gives access to a new generation of innovative self-assembled constructs.

Published
2015

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