Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 49, Pages 17814-17819Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201910530
Keywords
aggregation induced emission; anti-counterfeiting; mechanochromism; photochromism; tetraphenylethylene
Categories
Funding
- National Nature Science Foundation of China [21574085]
- Natural Science Foundation of Guangdong Province [2016A030312002, 2017A030313067]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available