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Intermolecular Charge‐Transfer Interactions Facilitate Two‐Photon Absorption in Styrylpyridine–Tetracyanobenzene Cocrystals
Author(s) -
Sun Lingjie,
Zhu Weigang,
Wang Wei,
Yang Fangxu,
Zhang Congcong,
Wang Shufeng,
Zhang Xiaotao,
Li Rongjin,
Dong Huanli,
Hu Wenping
Publication year - 2017
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.201703439
Subject(s) - intermolecular force , cocrystal , supramolecular chemistry , absorption (acoustics) , acceptor , two photon absorption , chemical physics , materials science , charge (physics) , intramolecular force , crystal engineering , nanotechnology , photochemistry , chemistry , crystallography , hydrogen bond , molecule , crystal structure , stereochemistry , organic chemistry , optics , physics , laser , composite material , condensed matter physics , quantum mechanics
Cocrystals of 4‐styrylpyridine and 1,2,4,5‐tetracyanobenzene were successfully prepared by supramolecular self‐assembly. Donor–acceptor interactions between the molecular components are the main driving force for self‐assembly and contribute to intermolecular charge transfer. The cocrystals possess two‐photon absorption properties that are not observed in the individual components; suggesting that two‐photon absorption originates from intermolecular charge‐transfer interactions in the donor–acceptor system. The origin of two‐photon absorption in multichromophore systems remains under‐researched; thus, the system offers a rare demonstration of two‐photon absorption by cocrystallization. Cocrystal engineering may facilitate further design and development of novel materials for nonlinear optical and optoelectronic applications.