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Issue 47, 2019
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Multi-functional switches of ditopic ligands with azobenzene central bridges at a molecular scale

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Abstract

Ligands are designed to have ditopic bipyridine terminal groups linked through photochromic azobenzene central units, which exhibit multi-switchable properties by different external stimuli. The molecule can switch between cis-and trans-conformations at their bipyridine terminal groups upon protonation and at their central azobenzene units upon irradiation of photons. As a result, the system shows four different isomeric states: cis–TRANS, trans–TRANS, cis–CIS and trans–CIS. The four conformers are switched and are visualized by scanning tunneling microscopy at the solid–liquid interface, which gives a direct demonstration of the multi-functional switches at a molecular level.

Graphical abstract: Multi-functional switches of ditopic ligands with azobenzene central bridges at a molecular scale

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Article information


Submitted
25 Jul 2019
Accepted
08 Nov 2019
First published
14 Nov 2019

Nanoscale, 2019,11, 23042-23048
Article type
Paper

Multi-functional switches of ditopic ligands with azobenzene central bridges at a molecular scale

H. Imen, S. Xiaonan, F. Denis, L. Frédéric and L. Jean-Christophe, Nanoscale, 2019, 11, 23042
DOI: 10.1039/C9NR06350A

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