Achieving Seconds-to-Hours Duration-Tunable Organic Long Persistent Luminescence from Carbon Dots-Based Exciplex Systems by Energy Gaps Regulation
作者机构：International Joint Research Center for Photo-responsive Molecules and MaterialsSchool of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122China State Key Laboratory of Food Science and ResourcesJiangnan UniversityWuxiJiangsu 214122China
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2024年第42卷第12期
页 面：1407-1417页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
主 题：Carbon dots Composites Charge separation Exciplex Persistent luminescence
摘 要：Comprehensive Summary Duration-tunable afterglow materials have garnered considerable attention in various ***,carbon dots(CDs)-based long persistent luminescence(LPL)composites with a tunable duration in an ultrawide range of seconds-to-hours levels were designed and prepared for the first *** contrast to the established CD-based afterglow materials,we reported that CD-based composites exhibit LPL in the form of exciplexes and long-lived charge-separated states,enabling the LPL to be prolonged from several seconds to over one hour,exceeding the typical regulation range(limited to 1 min).Further studies revealed that the relationship between the excited and charge-transfer states of CDs plays a pivotal role in activating the LPL and regulating its ***,these composites exhibited high photoluminescence(PL)quantum yields of up to 60.63%,and their LPL was robust under ambient conditions,even in aqueous *** robust and superior LPL performance endows these composites with a strong competitive advantage in dynamic display systems,such as tags for time-resolved data encryption and displays of the remaining time of *** study offers an approach to preparing CDs-based LPL composites with tunable durations and may provide new insights for the development of rare-earth-free LPL materials.
维普期刊数据库