Crosslink-enhanced strategy to achieve multicolor long-lived room temperature phosphorescent films with excellent photostability  

作　　者：Taotao Li Yu Zheng Chenqin Wu Chengyu Yan Cheng Zhang Hong Gao Qian Chen Kui Zhang 

机构地区：[1]School of Chemistry and Chemical Engineering,Anhui University of Technology,Ma'anshan 243032,China

出　　处：《Chinese Chemical Letters》2022年第9期4238-4242,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.22106005);Natural Science Foundation of Anhui Province(No.1908085MB41);Natural Science Foundation of Anhui Province for Distinguished Young Scholars(No.2008085J11);Innovative Training Program for College Students(No.S202110360206).

摘　　要：Room temperature phosphorescence(RTP)films have recently attracted increasing attention due to their excellent luminescent properties for information encryption,optoelectronic devices,and sensors.However,polyvinyl alcohol(PVA)films with abundant hydrogen bonds to suppress triplet energy dissipation suffered from the humidity induced phosphorescence quenching under storage in the air for a long time.In this work,poly(acrylic acid)(PAA)was selected to crosslink PVA matrix through esterification reactions for preparing water resistant RTP films.The blue,cyan,and orange emissive RTP films were successfully obtained by incorporating three different organic compounds into PVA-PAA crosslinking films.Crosslinking strategy significantly improved the phosphorescence emissions of the doped films,and effectively blocked the absorption of water molecular,leading to the excellent photostability of the developed films.As a proof of concept,the white light phosphorescence film and anti-counterfeiting applications were successfully demonstrated.

关 键 词：CROSSLINK Film PHOSPHORESCENCE PHOTOSTABILITY MULTICOLOR 

分 类 号：TB383.2[一般工业技术—材料科学与工程]