摘要
碳化聚合物点作为一类新型的荧光碳纳米点,其高量子产率、独特的碳核和聚合物壳的杂化结构和功能在近些年引起了广泛关注.本文通过系统总结、分析相关文献,揭示了碳化聚合物点不仅具有碳点的典型性质,也具有聚合物的性质.强调了碳化聚合物点的聚合-碳化的本质,并详细讨论了碳化聚合物点的结构特点、制备方法方面的普适性和规律性以及光致发光的机制.最后,基于碳化聚合物点的结构和性能调控,综述了其在传感、光电器件、催化和生物医学等不同领域的应用,并对碳化聚合物点的发展前景进行了展望.
As a new type of fluorescent carbon nanodots,carbonized polymer dots(CPDs)have attracted extensive attention in recent years due to their unique hybrid structure and functionalities of carbon core and polymer shell.This review systematically summarizes and analyzes the relevant literature,and reveals that CPDs have the properties of both traditional carbon dots and polymers.CPDs,showing aggregated/crosslinked and carbonized polymer hybrid nanostructures,are often produced from small molecules,polymers,or biomass by assembling,polymerization,crosslinking,and carbonization via"bottom-up"methods.We emphasize the important role of polymerization and carbonization during the formation of CPDs,which is the essence of the CPDs.Due to the abundance of carbon sources and various synthetic strategies,the structure and properties of CPDs are diverse.Moreover,we discuss the photoluminescence mechanism of CPDs,and systematically conclude that the complicated influence factors of photoluminescence can be mainly classified as molecule state,carbon core state,surface state and crosslink enhanced emission(CEE)effect.CPDs are endowed with many unique optical,electrical and other physical and chemical properties,which are attributed to the polymer/carbon hybrid structure.Finally,based on the structure and performance control on CPDs,the applications of CPDs in different fields such as sensing,optoelectronic devices,catalysis and biomedicine are reviewed,and the development prospect of CPDs is discussed.
作者
乐妲
冯唐略
杨柏
Da Yue;Tang-lue Feng;Bai Yang(State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012)
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2021年第8期938-959,I0003,共23页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号22035001)资助项目。
关键词
碳化聚合物点
碳点
发光机理
碳核
聚合物壳
Carbonized polymer dots
Carbon dots
Photoluminescence mechanism
Carbon core
Polymer shell