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Modulation of Electronic Mobility of a One‐Dimensional Coordination Polymeric Molecular Wire with Light
Author(s) -
Saha Monochura,
Chatterjee Sheelbhadra,
Hossain Munshi Sahid,
Ghude Arijeet,
Bandyopadhyay Subhajit
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201900956
Subject(s) - azobenzene , photoisomerization , photochromism , polymer , materials science , photochemistry , metal ions in aqueous solution , metal , ion , ligand (biochemistry) , conductance , polymer chemistry , isomerization , chemistry , nanotechnology , organic chemistry , composite material , biochemistry , receptor , mathematics , combinatorics , metallurgy , catalysis
Metal ions often influence the photoswitching efficiency of a photochromic system. This article reports a one‐dimensional polymer having cyclic azobenzenes coordinated to silver ions that are bridged by nitrates. The coordination polymer (CP‐ 2 ) displays a photoresponsive behavior. The switching ability in the polymer form was faster compared to the parent azobenzene ligand without the metal ions. Azobenzenes are reported to be poorly conducting. Here, although the azobenzene ligand does not show significant electronic mobility, the coordination polymer (CP‐ 2 ) displays a modest conductivity. The conductance in the cis form of the polymer is significantly higher compared to the trans form. Upon exposure to visible light, the cis form undergoes photoisomerization to the trans form with a drastic drop in the electronic mobility. The trans form can be reverted to the cis form thermally or by using UV light. Thus, this system offers a reversible control of the conductivity using light.