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Stimuli‐Responsive Luminescent Properties of Tetraphenylethene‐Based Strontium and Cobalt Metal–Organic Frameworks
Author(s) -
Guo Xiaolei,
Zhu Nansong,
Wang ShiPing,
Li Guanghua,
Bai FuQuan,
Li Yi,
Han Yonghao,
Zou Bo,
Chen XiaoBo,
Shi Zhan,
Feng Shouhua
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.202010326
Subject(s) - strontium , cobalt , metal organic framework , luminescence , nanotechnology , business , materials science , chemistry , optoelectronics , metallurgy , organic chemistry , adsorption
Herein we report two new TPE‐based 3D MOFs, that is, Sr‐ETTB and Co‐ETTB (TPE=Tetraphenylethylene, H 8 ETTB=4′,4′′′,4,4‐(ethene‐1,1,2,2‐tetrayl)tetrakis(([1,1′‐biphenyl]‐3,5‐dicarboxylic acid))). Through tailoring outer shell electron configurations of Sr II and Co II cations, the fluorescence intensity of the MOFs is tuned from high emission to complete non‐emission. Sr‐ETTB with strong blue fluorescence shows reversible fluorescence variations in response to pressure and temperature, which is directly related to the reversible deformation of the crystal structure. In addition, non‐emissive Co‐ETTB counterpart exhibits a turn‐on fluorescent enhancement under the stimulation of analyte histidine. In the process, TPE‐cored linkers in the MOFs are released through competitive coordination substitution and subsequently reassembled to perform aggregation‐induced luminescence behavior originated from the organic linkers.