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Updated: Aug 28, 2025

A Step Beyond BRET: Fluorescence by Unbound Excitation from Luminescence FUEL
Published on: May 23, 2014
Photochemically Enhanced Emission by Introducing Rational Photoactive Subunits into an Aggregation-Induced Emission
Qiaozhi Zhu1, Yuqing Zhu1, Weidong Liu1
1Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Yingbin Road 688, Jinhua, 321004, P. R. China.
Abstract:
Herein, we propose a rational design strategy by introducing photoactive thienyl and pyridyl groups into an AIE-active tetraarylethene skeleton to achieve highly efficient photochemistry-activated fluorescence enhancement from dominantly photo-physical aggregation-induced emission behavior, and prove that such photoactivated fluorescence enhancement is perfectly suited for superstable photocontrollable dual-mode patterning applications in both solution and solid matrix. It is found that the photoactivated fluorescence of designed AIEgen is attributed to the irreversible cyclized-dehydrogenation reaction under UV irradiation, and the oxidation product has a brighter fluorescence in both solution and solid states owning to its rigid and planar structure. The overall transformation rate of the AIEgen from its opened form to dehydrogenated form is up to nearly 100 % in a short period of UV irradiation, and the fast transformation and the stable product of this photochemical reaction guarantees super stability of photocontrolled patterning, which can be applied in photoactivated dual-mode patterning and advanced anti-counterfeiting.
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