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Pearce KG, Crossley IR. Diphosphametacyclophanes: Structural and Electronic Influences of Substituent Variation within a Family of Bis(diketophosphanyl) Macrocycles. J Org Chem 2020; 85:14697-14707. [DOI: 10.1021/acs.joc.0c01950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyle G. Pearce
- Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
| | - Ian R. Crossley
- Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
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St John A, Roth MW, Firlej L, Kuchta B, Charra F, Wexler C. Computer modeling of 2D supramolecular nanoporous monolayers self-assembled on graphite. NANOSCALE 2019; 11:21284-21290. [PMID: 31667485 DOI: 10.1039/c9nr05710b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nano-porous two-dimensional molecular crystals, self-assembled on atomically flat host surfaces offer a broad range of possible applications, from molecular electronics to future nano-machines. Computer-assisted designing of such complex structures requires numerically intensive modeling methods. Here we present the results of extensive, fully atomistic simulations of self-assembled monolayers of interdigitated molecules of 1,3,5-tristyrilbenzene substituted by C6 alkoxy peripheral chains (TSB3,5-C6), deposited onto highly-ordered pyrolytic graphite. Structural and electronic properties of the TSB3,5-C6 molecules were determined from ab initio calculations, then used in Molecular Dynamics simulations to analyze the mechanism of formation, epitaxy, and stability of the TSB3,5-C6 nanoporous superlattice. We show that the monolayer disordering results from the competition between flexibility of the C6 chains and their stabilization by interdigitation. The inclusion of guest molecules (benzene and pyrene) into superlattice nanopores stabilizes the monolayer. The alkoxy chain mobility and available pore space defines the systems dynamics, essential for potential application.
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Affiliation(s)
- Alexander St John
- Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA.
| | - Michael W Roth
- Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA. and Physics Department, Waldorf University, Forest City, IA 50436, USA
| | - Lucyna Firlej
- Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA. and Laboratoire Charles Coulomb, CNRS-Université de Montpellier, Montpellier, France
| | - Bogdan Kuchta
- Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA. and Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland and Laboratoire MADRIEL, Aix-Marseille Université-CNRS, Marseille, France
| | - Fabrice Charra
- Service de Physique de l'État Condensé (SPEC), CEA CNRS UMR-3680, Université Paris Saclay, CEA Saclay F-91191 Gif-sur-Yvette, France
| | - Carlos Wexler
- Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA.
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