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Supramolecular Assemblies by Charge‐Transfer Interactions between Donor and Acceptor Chromophores
Author(s) -
Das Anindita,
Ghosh Suhrit
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201307756
Subject(s) - supramolecular chemistry , stacking , acceptor , chromophore , hydrogen bond , nanotechnology , non covalent interactions , macromolecule , materials science , supramolecular assembly , chemistry , crystallography , molecule , photochemistry , organic chemistry , crystal structure , physics , biochemistry , condensed matter physics
We have collated various supramolecular designs that utilize organic donor–acceptor CT complexation to generate noncovalently co‐assembled structures including fibrillar gels, micelles, vesicles, nanotubes, foldamers, conformationally restricted macromolecules, and liquid crystalline phases. Possibly inspired by nature, chemists have extensively used hydrogen bonding as a tool for supramolecular assemblies of a diverse range of abiotic building blocks. As a structural motif, CT complexes can be compared to hydrogen‐bonded complexes in its directional nature and complementarities. Additional advantages of CT interactions include wider solvent tolerance and easy spectroscopic probing. Nevertheless the major limitation is their low association constant. This article shows different strategies have evolved over the years to overcome this drawback by reinforcing the CT interactions with auxiliary noncovalent forces without hampering the alternate stacking mode. Emerging reports on promising CT complexes in organic electronics are intimately related to various supramolecular designs that one can postulate based on donor–acceptor CT interactions.