Multiple Anti-Counterfeiting Guarantees from a Simple Tetraphenylethylene Derivative - High-Contrasted and Multi-State Mechanochromism and Photochromism.

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ID: 71672
2019
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Ranked #29 of 192 articles by views in angewandte chemie (international ed in english)

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Abstract
Herein the novel tetraphenylethylene (TPE) derivative 1 was designed with an integration of aggregation-induced emission (AIE), multi-state mechanochromism and self-recovery photochromism. The molecule was susceptible to grinding, heating and vapor fuming and showed corresponding transition of its emission colors. The heated powder or single crystal of 1 exhibited reversible photochromism. After a short period of UV irradiation, it showed a bright red color, but recovered to its original white appearance within 1 min. The photochromism is due to the formation of photocyclization intermediates upon UV irradiation, while the eversible mechanochromism is attributed to the weak molecular interactions derived from head-to-tail stacking of the molecules. This reversible multi-state, high-contrasted and rapid responsive mechanochromic and photochromic property cooperatively provide double enhancement of a multimode guarantee in advanced anti-counterfeiting.
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huang2019multipleangewandte Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Guangxi Huang, Qing Xia, Wenbin Huang, Jianwu Tian, Zikai He, Bing Shi Li, Ben Zhong Tang
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Journal angewandte chemie (international ed in english)
Year 2019
DOI
10.1002/anie.201910530
URL
Keywords
aggregation induced emission mechanochromism anti-counterfeiting photochromism tetraphenylethylene

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