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

作　　者：Ziqing Hu Hanwei Zhang Hui Liu Jinsa Li Xiaofan Ji Ben Zhong Tang 

机构地区：[1]Key Laboratory of Materials Chemistry for Energy Conversion and Storage,Ministry of Education,Hubei Key Laboratory of Materials Chemistry and Service Failure,Hubei Engineering Research Center for Biomaterials and Medical Protective Materials,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan,China [2]School of Science and Engineering,Shenzhen Institute of Aggregate Science and Technology,The Chinese University of Hong Kong,Shenzhen,Guangdong,China

出　　处：《SmartMat》2024年第2期83-92,共10页智能材料（英文）

基　　金：funding from the National Natural Science Foundation of China (No.22001087);support from the Huazhong University of Science and Technology,where he is being supported by Fundamental Research Funds for the Central Universities (No.2020kfyXJJS013);support from the Open Fund of Hubei Key Laboratory of Material Chemistry and Service Failure,Huazhong University of Science and Technology (No.2020MCF08);the Open Research Fund (No.2021JYBKF01)of Key Laboratory of Material Chemistry for Energy Conversion and Storage,Huazhong University of Science and Technology,Ministry of Education;funding from Shenzhen Key Laboratory of Functional Aggregate Materials (No.ZDSYS20211021111400001).

摘　　要：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.

关 键 词：aggregation-induced emission fluorescent hydrogel MULTICOLOR polar-responsiveness 

分 类 号：O62[理学—有机化学]