金银团簇基光学传感器设计及其对镉离子的检测性能  

Development of Luminescent AuAg Nanocluster-based Optical Senser for Cd^(2+) Detection

作　　者：王子平[1] 刘勇[2] 杜芳林[2] 袁勋 WANG Ziping;LIU Yong;DU Fanglin;YUAN Xun(Weifang University of Science and Technology,Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization,Shouguang 262700,China;College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]潍坊科技学院山东半岛卤水资源高值化绿色化综合利用工程技术研发中心,山东寿光262700 [2]青岛科技大学材料科学与工程学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2022年第2期20-25,共6页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省泰山学者工程专项基金项目(tsqn201812074);山东省省属高校优秀青年人才联合基金项目(ZR2019YQ07).

摘　　要：利用还原型谷胱甘肽作为还原剂和保护配体,通过“一锅煮”的合成方法制备了具有“聚集诱导”(AIE)特性的强烈荧光金银合金纳米团簇(AuAg NCs),并基于Cd^(2+)对该团簇的“聚集诱导”荧光增强效应,实现了对于Cd^(2+)的低成本、无标签光学检测。同时,由于Cd^(2+)与AuAg NCs表面的羧基极强的亲和力,能诱导AuAg NCs聚集实现荧光增强,使该光学传感器对Cd^(2+)具有良好的选择性和灵敏度,最低检测限低至10nmol·L^(-1)。Cadmium ion(Cd^(2+))pollution is commonly acknowledged as one of the most seri-ous threat to the both the environment and human health,while exploring simple and rapid strategy to detect Cd^(2+)could be an essential step for the Cd^(2+)treatment.Herein,a highly luminescent AuAg nanocluster(AuAg NCs)with AIE-property was synthesized through a simple“One-pot”method(GSH was used as the reducing-cum-protecting agent)and further used as a low-cost and label-free Cd^(2+)sensor through aggregation-induced emission(AIE).The AuAg NCs-based Cd^(2+)sensor demonstrate a ultrahigh sensitivity(as low as 10nm)and selectivity toward Cd^(2+),due to the strong affinity between Cd^(2+)and the carboxyl groups on the surface of AuAg NCs,which could induce the aggregation of AuAg NCs and further en-hance the fluorescence through AIE.

关 键 词：金银纳米团簇 光学传感器 荧光 离子检测 镉离子 

分 类 号：O657.3[理学—分析化学]