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133 results on '"Adisoejoso, Jinne"'

1. On the stability of surface-confined nanoporous molecular networks.

Author

Ghijsens, Elke, Adisoejoso, Jinne, Van Gorp, Hans, Destoop, Iris, Aya Noguchi, Ivasenko, Oleksandr, Kazukuni Tahara, Van der Auweraer, Mark, Yoshito Tobe, and De Feyter, Steven

Subjects
*MOLECULAR self-assembly, *NANOPOROUS materials, *SURFACE chemistry, *ANNULENES, *SOLID-liquid interfaces, *PHASE transitions, *THERMODYNAMICS
Abstract

Self-assembly of molecular building blocks into two-dimensional nanoporous networks has been a topic of broad interest for many years. However, various factors govern the specific outcome of the self-assembly process, and understanding and controlling these are key to successful creation. In this work, the self-assembly of two alkylated dehydrobenzo[12]annulene building blocks was compared at the liquid-solid interface. It turned out that only a small chemical modification within the building blocks resulted in enhanced domain sizes and stability of the porous packing relative to the dense linear packing. Applying a thermodynamic model for phase transition revealed some key aspects for network formation. [ABSTRACT FROM AUTHOR]

Published
2015
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2. 2D networks of rhombic-shaped fused dehydrobenzo[12]annulenes: structural variations under concentration control

Author

Tahara, Kazukuni, Okuhata, Satoshi, Adisoejoso, Jinne, Shengbin Lei, Fujita, Takumi, De Feyter, Steven, and Tobe, Yoshito

Subjects
Benzene -- Structure, Benzene -- Chemical properties, Porous materials -- Chemical properties, Solvation -- Analysis, Substitution reactions -- Analysis, Chemistry
Abstract

Several studies are conducted to explain the structure, as well as the properties of the 2D networks of the various rhombic-shaped fused dehydrobenzo[12]annulenes. The results demonstrate concentration control to be an extremely significant tool for the construction of such porous networks.

Published
2009

4. Transition Metals Trigger On-Surface Ullmann Coupling Reaction: Intermediate, Catalyst and Template

Author

Dong, Lei, Wang, Shiyong, Wang, Weihua, Chen, Cheng, Lin, Tao, Adisoejoso, Jinne, Lin, Nian, Dong, Lei, Wang, Shiyong, Wang, Weihua, Chen, Cheng, Lin, Tao, Adisoejoso, Jinne, and Lin, Nian

Abstract

In this chapter, we report on our recent studies of on-surface Ullmann coupling reaction and focus on the roles of the transition metals in the reaction. First, we discuss an organometallic intermediate state, which separates the reaction into two steps. Next, we examine the catalytic efficiency of Cu, Au, Ag, Pt, and Pd in the reaction. We analyze the bond formation yields when the reaction takes place in the presence of these metals. In particular, we determine the rate constants and activation energy of Cu-and Pd-catalyzed reaction. In the last part, we demonstrate a strategy of using metal coordination template to steer the reaction toward specific products.

Published
2016

6. Tunable doping of graphene by using physisorbed self-assembled networks

Author

Phillipson, Roald, primary, Lockhart de la Rosa, César J., additional, Teyssandier, Joan, additional, Walke, Peter, additional, Waghray, Deepali, additional, Fujita, Yasuhiko, additional, Adisoejoso, Jinne, additional, Mali, Kunal S., additional, Asselberghs, Inge, additional, Huyghebaert, Cedric, additional, Uji-i, Hiroshi, additional, De Gendt, Stefan, additional, and De Feyter, Steven, additional

Published
2016
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12. A Single-Molecule-Level Mechanistic Study of Pd-Catalyzed and Cu-Catalyzed Homocoupling of Aryl Bromide on an Au(111) Surface

Author

Adisoejoso, Jinne, Lin, Tao, Shang, Xue Song, Shi, Ke Ji, Gupta, Aditi, Liu, Pei Nian, Lin, Nian, Adisoejoso, Jinne, Lin, Tao, Shang, Xue Song, Shi, Ke Ji, Gupta, Aditi, Liu, Pei Nian, and Lin, Nian

Abstract

On-surface Pd- and Cu-catalyzed CC coupling reactions between phenyl bromide functionalized porphyrin derivatives on an Au(111) surface have been investigated under ultra-high vacuum conditions by using scanning tunneling microscopy and kinetic Monte Carlo simulations. We monitored the isothermal reaction kinetics by allowing the reaction to proceed at different temperatures. We discovered that the reactions catalyzed by Pd or Cu can be described as a two-phase process that involves an initial activation followed by CC bond formation. However, the distinctive reaction kinetics and the CC bond-formation yield associated with the two catalysts account for the different reaction mechanisms: the initial activation phase is the rate-limiting step for the Cu-catalyzed reaction at all temperatures tested, whereas the later phase of CC formation is the rate-limiting step for the Pd-catalyzed reaction at high temperature. Analysis of rate constants of the Pd-catalyzed reactions allowed us to determine its activation energy as (0.41 +/- 0.03)eV.

Published
2014

16. Coordination self-assembly of bromo-phenyl and pyridyl functionalized porphyrins with Fe on an Au(111) surface

Author

Mao, Xiao Feng, Lin, Tao, Adisoejoso, Jinne, Shi, Ziliang, Shang, Xue Song, Liu, Pei Nian, Lin, Nian, Mao, Xiao Feng, Lin, Tao, Adisoejoso, Jinne, Shi, Ziliang, Shang, Xue Song, Liu, Pei Nian, and Lin, Nian

Abstract

Using scanning tunneling microscopy, the coordination self-assembly of a series of peripheral bromo-phenyl and pyridyl substituted porphyrins with Fe was studied on an Au(111) surface. The porphyrins functionalized with two trans-pyridyl groups afford extended hexagonal frameworks and the porphyrins functionalized with three pyridyl groups generate discrete rosette and extended chiral kagome framework structures. The self-assembly of the porphyrin derivatives in which phenyl groups are substituted by bromo-phenyl results in coordination networks exhibiting identical structures to that of the parent compounds. These structures contain nanocavities decorated with Br, which provide potential for covalent functionalization.

Published
2013

17. Steering On-Surface Polymerization with Metal-Directed Template

Author

Lin, Tao, Shang, Xue Song, Adisoejoso, Jinne, Liu, Pei Nian, Lin, Nian, Lin, Tao, Shang, Xue Song, Adisoejoso, Jinne, Liu, Pei Nian, and Lin, Nian

Abstract

On-surface polymerization represents a novel bottom-up approach for producing macromolecular structures. To date, however, most of the structures formed using this method exhibit a broad size distribution and are disorderly adsorbed on the surface. Here we demonstrate a strategy of using metal-directed template to control the on-surface polymerization process. We chose a bifunctional compound which contains pyridyl and bromine end groups as the precursor. Linear template afforded by pyridyl-Cu-pyridyl coordination effectively promoted Ullmann coupling of the monomers on a Au(111) surface. Taking advantage of efficient topochemical enhancement owing to the conformation flexibility of the Cu pyridyl bonds, macromolecular porphyrin structures that exhibit a narrow size distribution were synthesized. We used scanning tunneling microscopy and kinetic Monte Carlo simulation to gain insights into the metal-directed polymerization at the single molecule level. The results reveal that the polymerization process profited from the rich chemistry of Cu which catalyzed the C-C bond formation, controlled the size of the macromolecular products, and organized the macromolecules in a highly ordered manner on the surface.

Published
2013

18. Temperature-induced structural phase transitions in a two-dimensional self-assembled network

Author

Blunt, M.O., Adisoejoso, Jinne, Tahara, K., Katayama, K., Van Der Auweraer, M., Tobe, Y., De Feyter, S., Blunt, M.O., Adisoejoso, Jinne, Tahara, K., Katayama, K., Van Der Auweraer, M., Tobe, Y., and De Feyter, S.

Abstract

Two-dimensional (2D) supramolecular self-assembly at liquid-solid interfaces is a thermodynamically complex process producing a variety of structures. The formation of multiple network morphologies from the same molecular building blocks is a common occurrence. We use scanning tunnelling microscopy (STM) to investigate a structural phase transition between a densely packed and a porous phase of an alkylated dehydrobenzo[12]annulene (DBA) derivative physisorbed at a solvent-graphite interface. The influence of temperature and concentration are studied and the results combined using a thermodynamic model to measure enthalpy and entropy changes associated with the transition. These experimental results are compared to corresponding values obtained from simulations and theoretical calculations. This comparison highlights the importance of considering the solvent when modeling porous self-assembled networks. The results also demonstrate the power of using structural phase transitions to study the thermodynamics of these systems and will have implications for the development of predictive models for 2D self-assembly. © 2013 American Chemical Society.

Published
2013

19. Two-Dimensional Metallo-supramolecular Polymerization: Toward Size-Controlled Multi-strand Polymers

Author

Adisoejoso, Jinne, Li, Yang, Liu, Jun, Liu, Pei Nian, Lin, Nian, Adisoejoso, Jinne, Li, Yang, Liu, Jun, Liu, Pei Nian, and Lin, Nian

Abstract

Multi strand metallo-supramolecular polymers are self assembled by pyridyl-functionalized porphyrin derivatives on a Au(111) surface through pyridyl-Cu-pyridyl coordination. Single-molecule-resolved characterization by scanning tunneling microscopy reveals a novel chain growth polymerization mechanism for multi strand supramolecular polymers. Furthermore, by varying the growth temperature and adding specific molecular modulators, both the length and the width of the polymers can be controlled.

Published
2012

43. Exploring the Complexity of Supramolecular Interactions for Patterning at the Liquid–Solid Interface.

Author

Mali, Kunal S., Adisoejoso, Jinne, Ghijsens, Elke, De Cat, Inge, and De Feyter, Steven

Subjects
*SUPRAMOLECULAR chemistry, *SOLID-liquid interfaces, *MOLECULAR self-assembly, *MICROFABRICATION, *SURFACE chemistry, *CHEMICAL reactions, *ELECTROSTATICS
Abstract

The use of self-assembly to fabricate surface-confined adsorbed layers (adlayers) from molecular components provides a simple means of producing complex functional surfaces. The molecular self-assembly process relies on supramolecular interactions sustained by noncovalent forces such as van der Waals, electrostatic, dipole–dipole, and hydrogen bonding interactions. Researchers have exploited these noncovalent bonding motifs to construct well-defined two-dimensional (2D) architectures at the liquid–solid interface. Despite myriad examples of 2D molecular assembly, most of these early findings were serendipitous because the intermolecular interactions involved in the process are often numerous, subtle, cooperative, and multifaceted. As a consequence, the ability to tailor supramolecular patterns has evolved slowly. Insight gained from various studies over the years has contributed significantly to the knowledge of supramolecular interactions, and the stage is now set to systematically engineer the 2D supramolecular networks in a “preprogrammed” fashion. [ABSTRACT FROM AUTHOR]

Published
2012
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44. One Building Block, Two Different Nanoporous Self-Assembled Monolayers: A Combined STM and Monte Carlo Study

Author

Adisoejoso, Jinne, Tahara, Kazukuni, Lei, Shengbin, Szabelski, Paweł, Rżysko, Wojciech, Inukai, Koji, Blunt, Matthew O., Tobe, Yoshito, and De Feyter, Steven

Abstract

With the use of a single building block, two nanoporous patterns with nearly equal packing density can be formed upon self-assembly at a liquid–solid interface. Moreover, the formation of both of these porous networks can be selectively and homogenously induced by changing external parameters like solvent, concentration, and temperature. Finally, their porous properties are exploited to host up to three different guest molecules in a spatially resolved way.

Published
2012
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45. TwoDimensional Crystal Engineering: A FourComponent Architecture at a Liquid–Solid InterfaceThis work is supported by KU Leuven through GOA 20062, the Institute of Promotion of Innovation by Science and Technology in Flanders IWT, the Fund of Scientific Research—Flanders FWO, the Belgian Federal Science Policy Office through IAP627, and a Grantinaid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology Japan.

Author

Adisoejoso, Jinne, Tahara, Kazukuni, Okuhata, Satoshi, Lei, Shengbin, Tobe, Yoshito, and DeFeyter, Steven

Abstract

No Abstract

Published
2009
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46. Control and induction of surface-confined homochiral porous molecular networks.

Author

Tahara, Kazukuni, Yamaga, Hiroyuki, Ghijsens, Elke, Inukai, Koji, Adisoejoso, Jinne, Blunt, Matthew O., De Feyter, Steven, and Tobe, Yoshito

Subjects
ASYMMETRIC synthesis, MOLECULES
Abstract

A correction to the article "Control and induction of surface-confined homochiral porous molecular networks" by Kazukuni Tahara and colleagues that was published in the 2011 issue, volume threee and pages 714 to 719 where it failed to state that correct energy values.

Published
2014
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49. A single-molecule-level mechanistic study of Pd-catalyzed and Cu-catalyzed homocoupling of aryl bromide on an Au(111) surface.

Author

Adisoejoso J, Lin T, Shang XS, Shi KJ, Gupta A, Liu PN, and Lin N

Abstract

On-surface Pd- and Cu-catalyzed C-C coupling reactions between phenyl bromide functionalized porphyrin derivatives on an Au(111) surface have been investigated under ultra-high vacuum conditions by using scanning tunneling microscopy and kinetic Monte Carlo simulations. We monitored the isothermal reaction kinetics by allowing the reaction to proceed at different temperatures. We discovered that the reactions catalyzed by Pd or Cu can be described as a two-phase process that involves an initial activation followed by C-C bond formation. However, the distinctive reaction kinetics and the C-C bond-formation yield associated with the two catalysts account for the different reaction mechanisms: the initial activation phase is the rate-limiting step for the Cu-catalyzed reaction at all temperatures tested, whereas the later phase of C-C formation is the rate-limiting step for the Pd-catalyzed reaction at high temperature. Analysis of rate constants of the Pd-catalyzed reactions allowed us to determine its activation energy as (0.41±0.03) eV., (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2014
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