摘要
采用表面活性剂辅助自组装方法,制得非共平面分子9,10-二苯基蒽(DPA)与平面型分子苝(Pe)形成的具有共晶诱导增强效应的电化学发光(ECL)新材料.DPA的引入不仅可以有效降低Pe分子因π-π作用聚集引起的聚集诱导猝灭(ACQ)效应,导致Pe分子的ECL发射从二聚体或多聚体激发态(^1Pe^2*)转变为单体激发态(^1Pe*);还发挥了供体分子的作用,为受体分子Pe提供了有效的能量传递,进一步增强了ECL响应.将该共晶发光材料修饰到玻碳电极表面构建了新型ECL尿酸传感器,其对尿酸检测的线性范围为0.01μmol/L^5.0 mmol/L,检出限为4.0 nmol/L,具有良好的选择性和稳定性.
A new luminophore with co-crystal enhanced electrochemiluminescence(ECL)was obtained by the surfactant assisted self-assembly of the non-coplanar molecule 9,10-diphenylanthracene(DPA)and planar molecule perylene(Pe).The introduction of DPA in the co-crystals can not only reduce the aggregation-caused quenching(ACQ)effect of perylene,making the ECL emission of Pe molecule from the dimer or multimer excited state(^1Pe^2*)to the monomer excited state(^1Pe*),but also plays a role as a donor molecule,providing effective energy transfer to the acceptor molecule of Pe,which further enhances the ECL response.The electro⁃chemical sensor for uric acid based on DPA-Pe microcrystals has an extremely wide linear of 0.01μmol/L—5.0 mmol/L and a detection limit of 4.0 nmol/L.In addition,the sensor has a nice stability and selectivity for uric acid detection.
作者
廖妮
张捷源
黄梓阳
赵晏汐
柴雅琴
袁若
卓颖
LIAO Ni;ZHANG Jieyuan;HUANG Ziyang;ZHAO Yanxi;CHAI Yaqin;YUAN Ruo;ZHUO Ying(Key Laboratory of Luminescence Analysis and Molecular Sensing(Southwest University),Ministry of Education,College of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2020年第9期1989-1995,共7页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:21675130)
重庆市英才计划青年拔尖人才项目(批准号:CQYC201905067)资助.
关键词
共晶诱导增强电化学发光
9
10-二苯基蒽
苝
尿酸
传感器
co-Crystal enhanced electrochemiluminescence
9,10-Diphenylanthracene
Perylene
Uric acid
Sensor
