journal article·2023-03

Hydrazone‐Based AIEgens with Photofluorochromic Ability for Rewritable, Intensity‐Variable, and High‐Resolution Photopattern

Minjie Zhang, Jianyu Zhang, Parvej Alam, Wenlang Li, Jacky W. Y. Lam, Guocheng Jia, Ben Zhong Tang

Advanced Functional Materials· Volume 33· Issue 12
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Abstract

Abstract Photoswitches with multiple fluorescence states known as photofluorochromism upon photo‐induced isomerization show practical applications in information storage, anticounterfeiting, and sensors. However, it is still challenging to realize rapid isomerization, efficient fluorescence, and gradient signal output simultaneously. Herein, by incorporating luminogenic units with aggregation‐induced emission (AIE) features into photo‐responsive hydrazone, a series of novel photofluorochromic AIE compounds are developed. These newly designed compounds exhibit quantum yields of up to 38.4% and could undergo reversible and swift photo‐isomerization upon 450/365 nm irradiation. Accordingly, the fabricated photopatterns based on them are utilized as quantitatively described images for information storage, which show excellent rewritability and intensity‐variable fluorescence with a high resolution of 10 µm. This work provides a new strategy to develop intelligent photopattern systems with continuous gradient fluorescence for information storage and cybernetics.
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Research context

OpenAlex topics: Photochromic and Fluorescence Chemistry · Luminescence and Fluorescent Materials · Polydiacetylene-based materials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, and Guangdong‐Hong Kong‐Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 China

School of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong Kong Shenzhen Guangdong 518172 China

Center for Aggregation‐Induced Emission South China University of Technology Guangzhou 510640 China

AIE Institute Guangzhou Development District Huangpu Guangzhou 510530 China

Funding

National Natural Science Foundation of China · Innovation and Technology Commission · Natural Science Foundation of Guangdong Province

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