聚乙烯亚胺修饰的荧光纳米探针的合成及其检测铜离子  

Fluorescent Nanoparticles Modified with Polyethyleneimine and Their Application in Detection of Copper Ion

作　　者：陈丽娟 陈畅畅 袁浩 水雅思 刘仁勇 谢成根 CHEN Lijuan;CHEN Changchang;YUAN Hao;SHUI Yasi;LIU Renyong;XIE Chenggen(College of Materials and Chemical Engineering,West Anhui University,Lu’an 237012,China;School of Energy Materials and Chemical Engineering,Hefei University,Hefei 230601,China)

机构地区：[1]皖西学院材料与化工学院,安徽六安237012 [2]合肥大学能源材料与化工学院,安徽合肥230601

出　　处：《新乡学院学报》2025年第3期30-35,共6页Journal of Xinxiang University

基　　金：安徽省高校杰出青年基金项目(2023AH020045);皖西学院博士后基金项目(WXBSH2021003);大学生创新创业训练计划项目(202410376031,S202410376081,wxxy2024112)。

摘　　要：以多巴胺衍生物DL-去甲肾上腺素(Nes)和聚乙烯亚胺(PEI)为反应前驱体,以水为反应溶剂,在室温、常压下,一步法合成PEI修饰的荧光聚(去甲肾上腺素)纳米颗粒(PEI-Nes NPs)。PEI-Nes NPs最大激发/发射波长为380nm/513nm,在365nm紫外灯下发出明亮的绿色荧光。不仅如此,PEI-NesNPs在不同浓度盐溶液、不同pH环境下以及365 nm紫外灯持续照射下均能保持良好的荧光稳定性。PEI-Nes NPs对铜离子(Cu^(2+))具有很好的选择性响应能力,对Cu^(2+)线性检测范围为0~25μmol/L,相关度R^(2)为0.994,最低检测限为33 nmol/L。PEI-Nes NPs作为检测Cu^(2+)的荧光探针成功应用于实际水样中Cu^(2+)检测,展现了良好的实际应用价值。The polyethylenimine-modified fluorescent poly(norepinephrine)nanoparticles(abbreviated as PEI-Nes NPs)were achieved in one-step process,using dopamine-derived DL-norepinephrine(Nes)and polyethylenimine(PEI)as reaction precursors,and water as the reaction solvent,all conducted under ambient conditions of room temperature and atmospheric pressure.The obtained PEI-Nes NPs presented a maximum excitation/emission wavelength of 380 nm/513 nm,respectively,and emitted bright green fluorescence under 365 nm UV lamp.In addition,PEI-Nes NPs can maintain great fluorescence stability in different concentrations of salt solutions,different pH environments and under continuous irradiation of 365 nm UV lamp.PEI-Nes NPs had a good selective response to copper ions(Cu^(2+)).The linear detection range of Cu^(2+)was 0~25μmol/L,the correlation R^(2) was 0.994,and the lowest detection limit was 33 nmol/L.PEI-Nes NPs,as a fluorescent probe for the detection of Cu^(2+),has been successfully applied to the detection of Cu^(2+)in actual water samples,indicating good practical application value.

关 键 词：荧光传感 DL-去甲肾上腺素 聚乙烯亚胺 铜离子 

分 类 号：O657.3[理学—分析化学]