基于UIO-66-NH2的表面分子印迹荧光传感器制备及其在检测罗丹明6G中的应用  

Preparation of Surface Molecularly Imprinted Fluorescence Sensor Based on UIO-66-NH2 and Its Application in Detection of Rhodamine 6G

作　　者：牛浩宇 李媛媛 王钢 王月 黄浩展 姚利霞 王一涵 张铭亮 李恺 NIU Haoyu;LI Yuanyuan;WANG Gang;WANG Yue;HUANG Haozhan;YAO Lixia;WANG Yihan;ZHANG Mingliang;LI Kai(School of Chemistry and Chemical Engineering,Henan University of Technology,Zhengzhou 450001,China;College of Chemistry,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]河南工业大学化学化工学院,河南郑州450001 [2]郑州大学化学学院,河南郑州450001

出　　处：《发光学报》2025年第1期156-163,共8页Chinese Journal of Luminescence

基　　金：河南省本科高校青年骨干教师培养计划(2023GGJS062);郑州市科技局自然科学项目协同创新专项(R&D专项经费,22ZZRDZX11);国家级大学生创新创业训练计划项目(202410463044)。

摘　　要：将金属有机框架材料UIO-66-NH_(2)同时作为载体和荧光基团,利用沉淀聚合法制备出一种用于检测罗丹明6G的表面分子印迹荧光传感器(UIO-66-NH_(2)@Rh6G@SMIPs)。通过红外光谱、X射线衍射等对其进行表征,证实其已成功合成。在检测罗丹明6G的过程中,该传感器的荧光峰呈比率型变化。其荧光峰强度的比值I_(560)/I_(440)与罗丹明6G浓度在0~10μmol·L^(-1)范围内呈线性关系,检出限为12.77 nmol·L^(-1)。此外,UIO-66-NH_(2)@Rh6G@SMIPs具有选择性高、抗干扰能力强以及荧光稳定性好等优点。在检测实际样品时,湖水中罗丹明6G的加标回收率为93.2%~104.2%,相对标准偏差为0.9%~3.1%;干辣椒中罗丹明6G的加标回收率为92.7%~108.6%,相对标准偏差为1.9%~3.7%,满足在复杂实际样品中的检测需求。本文为罗丹明6G的快速检测提供了一种高效可行的方法。Using the metal-organic frameworks UIO-66-NH_(2) as both carrier and fluorescence group,a surface molecularly imprinted fluorescence sensor(UIO-66-NH_(2)@Rh6G@SMIPs)for detecting rhodamine 6G was prepared by precipitation polymerization.By characterizing the sensor using infrared spectroscopy,X-ray diffraction,etc.,it was confirmed that the molecularly imprinted fluorescence sensor was successfully synthesized.In the process of detecting rhodamine 6G,the fluorescence peaks of the sensor showed ratiometric changes.The ratio of fluorescence peak intensities I_(560)/I_(440) were linearly related to the concentrations of rhodamine 6G with a detection limit of 12.77 nmol·L^(-1).In addition,UIO-66-NH_(2)@Rh6G@SMIPs exhibited the advantages of high selectivity,good anti-interference ability and favorable fluorescence stability.The sensor was applied to detect rhodamine 6G in real samples.The recoveries of rhodamine 6G were 93.2%-104.2%with the relative standard deviations(RSD)of 0.9%-3.1%in lake water.While the recoveries were 92.7%-108.6%with the RSD of 1.9%-3.7%in dry pepper sample,which demonstrated that the sensor can meet the detection demand in complicated real samples.This work provides an efficient and feasible method for rapid detection of rhodamine 6G in real samples.

关 键 词：金属有机框架 比率荧光 分子印迹聚合物 罗丹明 

分 类 号：O482.31[理学—固体物理]