Inside Back Cover: Transient and Persistent Room‐Temperature Mechanoluminescence from a White‐Light‐Emitting AIEgen with Tricolor Emission Switching Triggered by Light (Angew. Chem. Int. Ed. 22/2018)

Li, Jian‐An; Zhou, Jinghong; Mao, Zhu; Xie, Zongliang; Yang, Zhan; Xu, Bingjia; Liu, Cong; Chen, Xin; Ren, Dingyang; Pan, Huaizhong; Shi, Guang; Zhang, Yi; Chi, Zhenguo

doi:10.1002/anie.201804531

Cited by 4 publications

(3 citation statements)

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“…In addition, crystallization also have facilitated more channels for ISC than their monomers, leading to an enhancement in the RTP efficiency. [ 63 ] Huang's group focuses on a quantitative investigation about the relationship of aggregation and RTP properties based on aggregation engineering by varying the position and number of CN substituents of cyanophenyl carbazoles. [ 64 ] It is found that thermally activated reversed phase transformation H‐aggregation plays a key role in the splitting energy (Δε) and the RTP emission.…”

Section: Aggregation‐induced Rtp For Afterglow Imagingmentioning

confidence: 99%

Organic dye assemblies with aggregation‐induced photophysical changes and their bio‐applications

Lai

et al. 2021

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Phototheranostics provide a safe, effective, and noninvasive way for the diagnosis and treatment of contemporary diseases, and organic dyes play a vital role. For example, chemical modification endowed dyes with powerful reactive oxygen species or heat generation ability, favoring for photodynamic therapy and photoacoustic (PA) imaging guided photothermal therapy (PTT) of serious diseases. Therefore, photophysical properties manipulation of dyes has become the focus in current dye chemistry research. The development of aggregate science has made great effort to solve this problem. In recent years, a large number of studies have focused on molecular aggregation behavior and its effect on photophysical performance. The most famous example is the discovery of aggregation‐induced emission (AIE) phenomenon. Based on AIE theory, more theories for revealing the relationship between molecular aggregation behavior and photophysical properties were proposed and elucidated. The photophysical property changes caused by dye aggregation have become a unique discipline, guiding the development of molecular science and material science. With the help of molecular self‐assembly, controllable aggregation of dyes can be realized, and stable nano‐theranostic reagents can be obtained. Furthermore, constructing dye assemblies with various photophysical properties will greatly reduce the cost of theranostic reagents, thus, expanding biomedical applications of organic dyes. Therefore, this review focuses on the photophysical characteristic changes caused by dye aggregation and their biological applications including, fluorescence/phosphorescence/PA imaging as well as photodynamic and PTT. This review will provide guidance for the design of organic dyes, the development of controllable aggregation methods, and the construction of multifunctional phototheranostic reagents.

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Section: Aggregation‐induced Rtp For Afterglow Imagingmentioning

confidence: 99%

Organic dye assemblies with aggregation‐induced photophysical changes and their bio‐applications

Lai

et al. 2021

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“…In 2001, Tang and coworkers 22 discovered a special kind of molecule displaying an aggregation-induced emission (AIE) phenomenon, which meant molecules were nonemissive at the monomeric state while exhibiting bright fluorescence at the aggregation state. [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] Electron-donating (D) and -accepting (A) units are often embedded into AIE-gens for triggering polarityresponsive emission changes assisted by the twisted intramolecular charge transfer (TICT) effect. 43,44 On the basis of this special effect, we prepared a kind of AIE hydrogel, which then displayed continuous gradient fluorescence after being immersed in organic solvents based on a polar-responsive AIE-gen (Scheme 1A, right).…”

Section: Introductionmentioning

confidence: 99%

“…In 2001, Tang and coworkers 22 discovered a special kind of molecule displaying an aggregation‐induced emission (AIE) phenomenon, which meant molecules were nonemissive at the monomeric state while exhibiting bright fluorescence at the aggregation state 23–42 . Electron‐donating (D) and ‐accepting (A) units are often embedded into AIE‐gens for triggering polarity‐responsive emission changes assisted by the twisted intramolecular charge transfer (TICT) effect 43,44 .…”

Section: Introductionmentioning

confidence: 99%

AIE gel exhibiting continuous gradient fluorescence based on a polar‐responsive AIE‐gen

Zhang

Liu

et al. 2023

SmartMat

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Traditional multicolor fluorescent hydrogels are generated through the assembly of discrete fluorescent hydrogels, which is not a complete integration much distinct from living organisms. On the basis of aggregation‐induced emission (AIE), a special solvent polar‐responsive AIE molecule possessing a twisted intramolecular charge transfer (TICT) effect was noticed. By incorporating it into the gel network, an AIE gel that displays continuous gradient fluorescence was fabricated. First, hydrogel A containing the solvent polar‐responsive AIE‐gen was prepared to show orange fluorescence. After soaking in the organic solvents, the fluorescence color transition of hydrogel A ranging from orange to green occurred when being immersed in high‐polarity organic solvents ascribed to the embedded AIE‐gen owning TICT effect. Then, hydrogel A was successively lifted up from organic solvents. Due to the different immersion time of each section for the hydrogel, the polarity difference occurred. Then, the produced gel B showed continuous gradient fluorescence ranging from orange to green under the irradiation of UV light.

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Switchable and Highly Robust Ultralong Room‐Temperature Phosphorescence from Polymer‐Based Transparent Films with Three‐Dimensional Covalent Networks for Erasable Light Printing

Zhang

Wu³

et al. 2023

Angewandte Chemie

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Inside Back Cover: Transient and Persistent Room‐Temperature Mechanoluminescence from a White‐Light‐Emitting AIEgen with Tricolor Emission Switching Triggered by Light (Angew. Chem. Int. Ed. 22/2018)

Cited by 4 publications

References 0 publications

Organic dye assemblies with aggregation‐induced photophysical changes and their bio‐applications

Organic dye assemblies with aggregation‐induced photophysical changes and their bio‐applications

AIE gel exhibiting continuous gradient fluorescence based on a polar‐responsive AIE‐gen

Switchable and Highly Robust Ultralong Room‐Temperature Phosphorescence from Polymer‐Based Transparent Films with Three‐Dimensional Covalent Networks for Erasable Light Printing

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