A Dual‐Stimuli‐Responsive Coordination Network Featuring Reversible Wide‐Range Luminescence‐Tuning Behavior

We herein report a new coordination network that deforms in a smooth and reversible manner under either thermal or pressure stimulation. Concomitantly, the organic fluorophores coordinatively bound to the channel in a face‐to‐face arrangement respond to this structural deformation by finely adapting...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2019-04, Vol.58 (17), p.5614-5618
Main Authors: Yao, Zhao‐Quan, Xu, Jian, Zou, Bo, Hu, Zhenpeng, Wang, Kai, Yuan, Yi‐Jia, Chen, Ya‐Ping, Feng, Rui, Xiong, Jian‐Bo, Hao, Jialei, Bu, Xian‐He
Format: Article
Language:English
Subjects:
Chemical compounds
Compression
Conformation
Deformation
Dependence
Emission
Fluorescence
Fluorophores
Luminescence
materials science
piezofluorochromism
Pressure
Stimuli
stimuli-responsive materials
thermofluorochromism
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Summary:We herein report a new coordination network that deforms in a smooth and reversible manner under either thermal or pressure stimulation. Concomitantly, the organic fluorophores coordinatively bound to the channel in a face‐to‐face arrangement respond to this structural deformation by finely adapting their conformation and arrangement. As a result, the material exhibits a remarkable dual‐stimuli‐responsive luminescence shift across almost the entire visible region: The emission color of the crystal gradually changes from cyan to green upon heating and then to red upon pressure compression. Furthermore, each stage exhibits a linear dependence of both the emission maximum and intensity on the stimulus and is fully reversible. Coping with pressure and heat: In response to changes in temperature and pressure, the flexible scaffold of a luminescent coordination network underwent smooth and reversible structural deformation that regulated the conformation and arrangement of the emissive organic molecules coordinatively bound to the channel in the structure. As a result, a reversible fluorescence shift across almost the entire visible region was observed (see picture).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201900190