publication . Article . 2015

fine tuning of single molecule conductance by tweaking both electronic structure and conformation of side substituents

Albert C. Aragonès; Nadim Darwish; JongOne Im; Boram Lim; Jeongae Choi; Sangho Koo; Ismael Díez-Pérez;
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  • Published: 02 Apr 2015 Journal: Chemistry - A European Journal, volume 21, pages 7,716-7,720 (issn: 0947-6539, Copyright policy)
  • Publisher: Wiley
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 molecul...
Subjects
free text keywords: Organic chemistry, Chemistry, Conductivity, Molecular wire, Self-assembly, Conductance, Molecule, Substituent, chemistry.chemical_compound, Dihedral angle, Electronic structure
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