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文章编号： 1672-6987（2022）02-0020-06； DOI： 10.16351/j.1672-6987.2022.02.003
王子平1， 刘勇2， 杜芳林2， 袁勋2*(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)
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Cd2+对该团簇的“聚集诱导”荧光增强效应，实现了对于Cd2+的低成本、无标签光学检测。同时，由于Cd2+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Cd2+具有良好的选择性和灵敏度，最低检测限低至10 nmol·L-1。
关键词： 金银纳米团簇； 光学传感器； 荧光； 离子检测； 镉离子
中图分类号： O 657.3文献标志码： A
引用格式： 王子平， 刘勇， 杜芳林， 等. 金银团簇基光学传感器设计及其对镉离子的检测性能［J］. 青岛科技大学学报(自然科学版), 2022, 43(2): 20-25.
WANG Ziping, LIU Yong, DU Fanglin, et al. Development of luminescent AuAg nanocluster-based optical senser for Cd2+ detection［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2022， 43（2）： 20-25.
Development of Luminescent AuAg Nanocluster-based
Optical Senser for Cd2+ Detection
WANG Ziping1, LIU Yong2, DU Fanglin2, YUAN Xun2
(1.Weifang University of Science and Technology, Shandong Peninsula Engineering Research Center of
Comprehensive Brine Utilization, Shouguang 262700, China; 2.College of Materials Science and Engineering,
Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: Cadmium ion (Cd2+) pollution is commonly acknowledged as one of the most serious threat to the both the environment and human health, while exploring simple and rapid strategy to detect Cd2+ could be an essential step for the Cd2+ 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 Cd2+sensor through aggregation-induced emission (AIE). The AuAg NCs-based Cd2+ sensor demonstrate a ultrahigh sensitivity (as low as 10 nm) and selectivity toward Cd2+, due to the strong affinity between Cd2+ and the carboxyl groups on the surface of AuAg NCs, which could induce the aggregation of AuAg NCs and further enhance the fluorescence through AIE.
Key words: AuAg nanoclusters; optical sensor; luminescence; ion detection; Cd2+
收稿日期： 2021-03-26
基金项目： 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）.
作者简介： 王子平(1983—),男,讲师.*通信联系人.
