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现代化工  2018, Vol. 38 Issue (11): 243-247    DOI: 10.16606/j.cnki.issn0253-4320.2018.11.053
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DMF/AgNCs荧光探针检测苦味酸
戴兴露, 代蕊, 邓文清, 胡平越, 黄科, 熊小莉
四川师范大学化学与材料科学学院, 四川 成都 610068
DMF/Ag nanoclusters fluorescent probe for detection of picric acid
DAI Xing-lu, DAI Rui, DENG Wen-qing, HU Ping-yue, HUANG Ke, XIONG Xiao-li
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
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摘要 N,N-二甲基甲酰胺(DMF)作还原剂和稳定剂,采用回流方法简便合成了非常稳定的荧光银纳米簇(DMF/AgNCs),量子产率为23.5%。通过高分辨透射电镜(HRTEM)及荧光光谱(FL)对DMF/AgNCs进行了表征。当加入苦味酸(PA)后,DMF/AgNCs与PA的苯环之间发生电荷转移,从而猝灭DMF/AgNCs的荧光。基于此,建立了一种快速、灵敏检测PA的新方法。在选定的实验条件下,该方法的线性范围为3.3×10-9~4.5×10-8mol/L,检测限为1.0×10-9 mol/L,线性相关系数为0.993 8,对PA的检测具有较高的选择性,可用于环境水样中PA的检测。
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戴兴露
代蕊
邓文清
胡平越
黄科
熊小莉
关键词:  DMF  荧光  银纳米簇  探针  苦味酸(PA)    
Abstract: A highly stable fluorescent Ag nanoclusters (DMF/AgNCs) is prepared simply through reflux method with N,N-dimethylformamide (DMF) as reducer and stabilizer,and the quantum yield is 23.5%.The prepared DMF/AgNCs samples are characterized by HRTEM and fluorescence spectroscopy.The results indicate that small size AgNCs emits strong blue fluorescence possessing excellent water-solubility and photostability.After the addition of picric acid (PA),the charge transfer happens between the benzene ring of PA and DMF/AgNCs,which enables the fluorescence of DMF/AgNCs be efficiently quenched by PA.Therefore,a new,simple method for rapid and sensitive detection of PA is established.Under the optimized experimental conditions,this method shows a good linear relationship within the concentration range of 3.3×10-9-4.5×10-8 mol·L-1,the detection limit is 1.0×10-9 mol·L-1 and the correlation coefficient R2=0.993 8.This method has good selectivity for the detection of PA,which can be used for the detection of PA in environmental water samples.
Key words:  DMF    fluorescence    Ag nanoclusters    probe    picric acid
收稿日期:  2018-05-16      修回日期:  2018-09-05          
O657.39  
基金资助: 国家自然科学基金(21605108);四川省科技厅重点项目基金(2017FZ0079)
通讯作者:  熊小莉(1970-),女,硕士,副教授,主要从事化学与生物传感器的研究,通讯联系人,xiongxiaoli2000@163.com。    E-mail:  xiongxiaoli2000@163.com
作者简介:  戴兴露(1998-),女,本科生,研究方向为环境分析,1004069578@qq.com
引用本文:    
戴兴露, 代蕊, 邓文清, 胡平越, 黄科, 熊小莉. DMF/AgNCs荧光探针检测苦味酸[J]. 现代化工, 2018, 38(11): 243-247.
DAI Xing-lu, DAI Rui, DENG Wen-qing, HU Ping-yue, HUANG Ke, XIONG Xiao-li. DMF/Ag nanoclusters fluorescent probe for detection of picric acid. Modern Chemical Industry, 2018, 38(11): 243-247.
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