摘要
设计合成了2种具有明显聚集诱导发光(AIE)特性的吩噻嗪衍生物(SPA和SPN).荧光光谱研究表明,这2种化合物在水溶液中能够特异性地识别2,4,6-三硝基苯酚(TNP),其中SPA荧光检测TNP的猝灭率为89.1%,猝灭常数Ksv为3.18×104 L/mol,检出限为8.62×10-7 mol/L;SPN荧光检测TNP的猝灭率为90.4%,猝灭常数Ksv为4.43×104 L/mol,检出限为5.00×10-7 mol/L,有望作为荧光探针特异性识别TNP.而且SPA分子具有可逆的力致荧光变色特性,在紫外灯下发出蓝色荧光,研磨后变为浅黄色,有望被用于防伪材料或者可视化压力传感器领域.
Two phenothiazine derivatives(SPA and SPN)with significant aggregation-induced emission(AIE)characteristics were designed and synthesized.Photoluminescence spectroscopy showed that these two compounds could specifically recognize TNP in aqueous media.Theuorescence of SPA was quenched by 89.1%in the presence of TNP with a detection limit as low as 8.62×10-7 mol/L and a high Stern-Volmer quenching constant(Ksv)of 3.18×104 L/mol.The fluorescence of SPN was quenched by 90.4%after addition of TNP with a detection limit as low as 5.00×10-7 mol/L and a high Stern-Volmer quenching constant of 4.43×104 L/mol.It indicated that SPA and SPN were expected to work asuorescent probe to detection TNP with high sensitivity and selectivity.Moreover,SPA showed reversible mechanofluorochromic properties.It was observed that SPA emitted strong blue fluorescence under 365 nm UV light and the color changed light yellow after grinding.So it can promisingly be applied to the fields of visual pressure sensors or anti-counterfeiting materials.
作者
苏弘霖
杨京莲
高敏
温钰旸
梁楸怡
郭化雷
张敏敏
区振杰
刘聪
许炳佳
SU Honglin;YANG Jinglian;GAO Min;WEN Yuyang;LIANG Qiuyi;GUO Hualei;ZHANG Minmin;OU Zhenjie;LIU Cong;XU Bingjia(School of Chemistry, South China Normal University, Guangzhou 510006, China)
出处
《华南师范大学学报（自然科学版）》
CAS
北大核心
2020年第4期50-56,共7页
Journal of South China Normal University(Natural Science Edition)
基金
国家自然科学基金项目(51603233)
广东省自然科学基金项目(2017A030313318,2019A1515010550,2020A1515010439)
2019年广东省大学生创新创业训练计划项目(S201915744138)
中山大学光电材料与技术国家重点实验室开放课题(OEMT-2019-KF-08,OEMT-2018-KF-11)
中山大学聚合物复合材料及功能材料教育部重点实验室开放课题(PCFM-2019-05)。
关键词
吩噻嗪衍生物
聚集诱导发光
荧光检测
2
4
6-三硝基苯酚
力致荧光变色
phenothiazine derivatives
aggregation-induced emission
fluorescence detection
2,4,6-trinitrophenol
mechanofluorochromism
