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Cover Feature: Energy Relay Enhances Switching Efficiency in a Dendrimer–Azobenzene Supramolecular Assembly with an Anion–π Motif (4/2021)
Author(s) -
Rahaman Sk. Atiur,
Sahid Hossain Munshi,
Hatai Joydev,
Bandyopadhyay Subhajit
Publication year - 2021
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.202100067
Subject(s) - azobenzene , chromophore , dendrimer , moiety , isomerization , supramolecular chemistry , photochromism , chemistry , acceptor , photochemistry , photoisomerization , ion , viologen , stereochemistry , polymer chemistry , molecule , organic chemistry , catalysis , physics , condensed matter physics
The Cover Feature illustrates a supramolecular system composed of a donor and an acceptor chromophore assembled by a weak anion—π interaction. A second generation dendrimeric system with naphthyl moieties at the periphery acts as the light‐harvesting host (donor) and an azobenzene‐4, 4’‐dicarboxylic acid (AzoDA, disodium salt) serves as the guest (acceptor) moiety. The dendrimer acts as an energy funnel and induces a faster trans to cis isomerization of the AzoDA photochromic system compared to a bare AzoDA control. The transformation from trans to cis AzoDA mimics the production of a high‐energy species that occurs in nature (such as glucose from carbon dioxide and water). More information can be found in the Article by Subhajit Bandyopadhyay and co‐workers.