Premium
Cover Feature: Controlling the Supramolecular Polymerization of Donor‐Acceptor π‐Systems through Hydrogen Bond Intervention (ChemPlusChem 9/2019)
Author(s) -
Nair Vishnu Sukumaran,
Vedhanarayanan Balaraman,
Ajayaghosh Ayyappanpillai
Publication year - 2019
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201900426
Subject(s) - supramolecular chemistry , pyridine , copolymer , polymerization , hydrogen bond , polymer chemistry , chemistry , acceptor , carboxylic acid , photochemistry , lone pair , supramolecular polymers , crystallography , molecule , crystal structure , organic chemistry , polymer , physics , condensed matter physics
The cover feature shows the supramolecular polymerization and copolymerization of two distinct π‐systems, oligo( p ‐phenylenevinylene) (OPV) donors (shown in orange) and perylene bisimide (PBI) acceptors (shown in red). The donors form random assemblies because of interference of the pyridine lone pair with the amide H atom, whereas the acceptors form short fibrous aggregates through carboxylic acid dimerization. Interestingly, a 1:2 donor/acceptor mixture results in organized copolymerization because of the preferred carboxylic acid/pyridine H‐bond interaction, thus demonstrating the role of H‐bond intervention in directed supramolecular copolymerization. More details are given in the Full Paper by A. Ajayaghosh and co‐workers on page 1405 in Issue 9, 2019 (DOI: 10.1002/cplu.201900276).