Visualized Degradation of CO_(2)-Based Unsaturated Polyesters toward Structure-Controlled and High-Value-Added Fluorophores  

作　　者：Bo Song Tianwen Bai Dongming Liu Rong Hu Dan Lu Anjun Qin Jun Ling Ben Zhong Tang 

机构地区：[1]State Key Laboratory of Luminescent Materials and Devices,Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates,SCUT-HKUST Joint Research Institute,AIE Institute,Center for Aggregation-Induced Emission,South China University of Technology(SCUT),Guangzhou 510640 [2]MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027 [3]Department of Chemistry,Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration and Reconstruction,Institute for Advanced Study,and Department of Chemical and Biological Engineering,The Hong Kong University of Science&Technology(HKUST),Clear Water Bay,Kowloon,Hong Kong 999077

出　　处：《CCS Chemistry》2022年第1期237-249,共13页中国化学会会刊（英文）

基　　金：supported by the National Natural Science Foundation of China(nos.21788102 and 21525417);the Natural Science Foundation of Guangdong Province(nos.2019B030301003 and 2016A030312002);the Innovation and Technology Commission of Hong Kong(no.ITC-CNERC14S01).

摘　　要：In comparing with traditional polymer degradation toward unknown or unvalued products(i.e.,downcycling),new methods to degrade polymers into monomers or high-value-added materials(i.e.,upcycling)are preferable for sustainable developments.In this work,CO_(2)-based linear and cross-linked unsaturated polyesters,that is,poly(alkynoate)s,were successfully degraded by benzamidine into diols and high-value-added pyrimidone or imidazolone derivatives through controlled reaction conditions.The degradation process could be visualized under UV light via gradually increased luminescent intensity of the reaction mixtures and fluorescence patterns could be generated through microcontact printing of the stamp on the thin films of poly(alkynoate)s.Moreover,the pyrimidone derivatives could be applied in bioimaging and inhibiting bacteria,and the imidazolone derivatives could be used for the detection and recovery of gold(III)ions from electronic waste and serve as the fluorescent sensor to detect in situ-generated amines from food spoilage.Thus,this work presents a visualized and high value productselective degradation to solve the end-of-life issue of polymers.

关 键 词：visualized degradation N-heterocyclic compounds aggregation-induced emission microcontact printing gold enrichment 

分 类 号：O62[理学—有机化学]