Regulating room temperature phosphorescence of carbazole quaternization pyridine in polymer through Hofmeister effect  

作　　者：Runying He Yun Yang Qian Zhou Shasha Chang Yi Cheng Xiurong Ma Yonggang Shi Liyan Zheng Qiue Cao 

机构地区：[1]School of Chemical Science and Technology,Key Laboratory of Medicinal Chemistry for Natural Resource,Yunnan University,Kunming,P.R.China

出　　处：《Aggregate》2024年第6期202-213,共12页聚集体(英文)

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:21964020,22164020;Ten Thousand Talent Plans for Young Top-notch Talents of Yunnan Province,Grant/Award Number:C6193044;Natural Science Foundation of Yunnan Province,Grant/Award Number:K264202210049;Research Innovation Project of Yunnan University for Graduate Students on Exemption,Grant/Award Number:TM-23236836。

摘　　要：Hofmeister effect is a famous physical chemistry phenomenon that was reported a hundred years ago,which firstly refers to the action of certain salts to decrease the solubility of proteins while others increase.The Hofmeister effect on the luminescent properties of cationic organic fluorophore is still obscure,especially for their room temperature phosphorescence(RTP).Herein,hydrophilic groups(quaternization pyridine)were introduced into carbazole molecules to obtain a series of carbazole derivatives(named CZ-Py^(+))with different counter anions in the Hofmeister series.These carbazole derivatives displayed tunable fluorescent color from cyan to yellow in the solid state following the Hofmeister sequence and anti-Hofmeister behavior in an aqueous solution.Moreover,RTP material with tunable emission color and lifetime was achieved by doping CZ-Py^(+)with Hofmeister series anion in polymethyl methacrylate and polyvinyl alcohol,which displayed good performance in time getting information encryption and anti-counterfeiting.

关 键 词：ANTI-COUNTERFEITING Hofmeister quaternization pyridine room temperature phosphorescence 

分 类 号：O62[理学—有机化学]