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Manipulating Light‐Induced Dynamic Macro‐Movement and Static Photonic Properties within 1D Isostructural Hydrogen‐Bonded Molecular Cocrystals
Author(s) -
Li Shuzhen,
Lu Bo,
Fang Xiaoyu,
Yan Dongpeng
Publication year - 2020
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.202009714
Subject(s) - isostructural , materials science , hydrogen bond , molecule , anisotropy , photonic crystal , nanotechnology , chemical physics , crystallography , optoelectronics , crystal structure , chemistry , optics , organic chemistry , physics
Abstract Smart molecular crystals with light‐driven mechanical responses have received interest owing to their potential uses in molecular machines, artificial muscles, and biomimetics. However, challenges remain in control over both the dynamic photo‐mechanical behaviors and static photonic properties of molecular crystals based on the same molecule. Herein, we show the construction of isostructural co‐crystals allows their light‐induced cracking and jumping behaviors (photosalient effect) to be controlled. Hydrogen‐bonded co‐crystals from 4‐(1‐naphthylvinyl)pyridine ( NVP ) with co‐formers (tetrafluoro‐4‐hydroxybenzoic acid ( THA ) and tetrafluorobenzoic acid ( TA )) crystallize as isostructural crystals, but have different static and dynamic photo‐mechanical behaviors. These differences are due to alternations in the orientation of NVP and hydrogen‐bonding modes of the co‐formers. After light activation, the 1D NVP‐TA crystal splits and shears off within 1 s. For NVP‐THA , its photostability and high quantum yield give novel photonic properties, including low optical waveguide loss, highly polarized anisotropy, and efficient up‐conversion fluorescence.