【作者】 牛琴琴； 张雨婷； 姜晶晶； 双少敏； 张彦；

【Author】 Qinqin Niu;Yuting Zhang;Jingjing Jiang;Shaomin Shuang;Yan Zhang;School of Chemistry and Chemical Engineering, Shanxi University;

【机构】 山西大学化学化工学院；

【摘要】 荧光铜纳米团簇(CuNCs)作为一种发光纳米材料,因其尺寸超小、荧光强、生物兼容性好、毒性低和廉价等优点,已广泛应用于分子检测和细胞成像等方面[1]。苦味酸(PA)是一种芳香化合物,常用于生物材料、药品加工、涂料染料、杀菌消毒等工业中。但是,PA对人体眼睛、皮肤、呼吸等有毒害作用,经常接触会引起头疼、食欲不振、腹泻和发烧等症状,甚至致死[2]。本文采用组氨酸(His)作还原剂和保护剂,微波辅助合成了绿色荧光CuNCs,采用紫外-可见光谱和荧光光谱对铜纳米簇进行了表征(图1),CuNCs在600 nm处没有表面等离子体共振吸收峰,当激发波长为370 nm时,CuNCs在480 nm处有最佳发射峰;此外,CuNCs对苦味酸有选择性识别作用,CuNCs的荧光强度与苦味酸浓度呈线性关系(图2);基于此建立了一种高选择性、高灵敏度检测苦味酸的化学传感平台,并有望应用于实际样品的测定。更多还原

【Abstract】 As a type of luminescent nanomaterials, copper nanoclusters(CuNCs) have been widely used in molecular detection and cell imaging owing to the excellent physical and chemical properties[1]. Picric acid is an aromatic compound that is commonly used in many industries. But picric acid is harmful to people’s eyes, skin and respiratory, etc. If picric acid are excessive touched, we may be caused headaches, inappetence, diarrhea, fever, and even death[2]. Herein, we designed a green fluorescent CuNCs for sensitive and selective detection of picric acid, employing histidine as reducing and protecting agent. Moreover, we hope that the as-obtained CuNCs could be used as a promising chemical nanosensors for widespread applications in various fields.更多还原