NDLI: Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents

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Fine-Tuning of Single-Molecule Conductance by Tweaking Both Electronic Structure and Conformation of Side Substituents

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Koo, Sangho Darwish, Nadim Aragonès, Albert C. Choi, Jeongae Díez-pérez, Ismael Im, Jongone Lim, Boram
Description	Author Affiliation: Aragonès AC ( Physical-Chemistry Department, University of Barcelona and the Institute for Bioengineering of Catalonia, Diagonal 645, 08028 Barcelona (Spain).)
Abstract	Herein, we describe a method to fine-tune the conductivity of single-molecule wires by employing a combination of chemical composition and geometrical modifications of multiple phenyl side groups as conductance modulators embedded along the main axis of the electronic pathway. We have measured the single-molecule conductivity of a novel series of phenyl-substituted carotenoid wires whose conductivity can be tuned with high precision over an order of magnitude range by modulating both the electron-donating character of the phenyl substituent and its dihedral angle. It is demonstrated that the electronic communication between the phenyl side groups and the molecular wire is maximized when the phenyl groups are twisted closer to the plane of the conjugated molecular wire. These findings can be refined to a general technique for precisely tuning the conductivity of molecular wires.
ISSN	09476539
e-ISSN	15213765
Journal	Chemistry - A European Journal
Issue Number	21
Volume Number	21
Language	English
Publisher	Wiley-VCH;ChemPubSoc Europe
Publisher Date	2015-05-18
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Carotenoids Chemistry Electric Conductivity Electrons Models, Molecular Molecular Conformation Nanotechnology Quantum Theory Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Catalysis

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