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现代化工  2022, Vol. 42 Issue (11): 249-255    DOI: 10.16606/j.cnki.issn0253-4320.2022.11.047
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基于锰掺杂碳点的橘红色荧光纳米开关检测Cu2+和Arg的研究
陈修阳1, 潘立志1, 盛同范1, 周兴平2, 张晖2
1. 上海外高桥造船有限公司涂装部, 上海 200137;
2. 东华大学化学化工与生物工程学院, 上海 201620
Detection of Cu2+ and arginine by orange-red fluorescent nano-switch based on Mn-doped carbon dots
CHEN Xiu-yang1, PAN Li-zhi1, SHENG Tong-fan1, ZHOU Xing-ping2, ZHANG Hui2
1. Coating-Division, Shanghai Waigaoqiao Shipbuilding Co., Ltd., Shanghai 200137, China;
2. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
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摘要 以邻苯二胺和无水氯化锰为原料,水热法合成发射橘红色荧光的锰掺杂碳点(Mn-CDs),对其进行形貌表征、官能团和表面分析以及光学性能表征。结果显示,Mn-CDs呈现为尺寸范围在3.0~8.0 nm的球形形状,且粒径均匀,平均粒径为6.75 nm;该碳点表面含有丰富的—COOH和—NH2等水溶性官能团,使得该碳点在水中有很好的分散性。在最佳激发波长为440 nm的照射下,最佳发射波长为599 nm,且荧光很稳定。在pH=7.4的磷酸盐溶液中测定不同离子对Mn-CDs的荧光影响发现,只有Cu2+能够对Mn-CDs荧光进行明显猝灭,而精氨酸(Arg)能够对淬灭荧光进行明显恢复。以上荧光猝灭与恢复的强度与Cu2+及Arg的浓度存在较好的线性关系,表明合成的Mn-CDs可以作为检测Cu2+和Arg的分析平台,Cu2+和Arg的最低检出限分别为0.234、0.650 μmol/L。
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陈修阳
潘立志
盛同范
周兴平
张晖
关键词:  锰掺杂  碳点  淬灭与恢复  铜离子  精氨酸    
Abstract: Manganese-doped carbon dots (Mn-CDs) that emitting orange fluorescence are synthesized by a one-step hydrothermal method with o-phenylenediamine and anhydrous manganese chloride as precursors,and their morphology,functional groups,surface and optical properties are characterized.The results show that Mn-CDs presents a spherical shape with an average particle size of 6.75 nm in the range of 3.0-8.0 nm and a narrow size-distribution.In addition,the surface of Mn-CDs is rich in water-soluble functional groups such as —COOH and —NH2,making them have a good dispersion in water.Under the irradiation with the optimized excitation wavelength of 440 nm,the best emission wavelength of Mn-CDs is 599 nm,and the fluorescence is very stable.Effects of different ions on the fluorescence of Mn-CDs are measured in phosphate solution with a pH of 7.4,and it is found that only Cu2+ can significantly quench the fluorescence of Mn-CDs,while arginine can significantly recover the quenched fluorescence.There are good linear relationships between the quenching and the concentration of Cu2+,and between the recovering and the concentration of arginine,indicating that the synthesized Mn-CDs can be used as a platform for detecting Cu2+ and arginine,with the lowest detection limits of 0.234 μmol·L-1 and 0.65 μmol·L-1,respectively.
Key words:  Mn-doping    carbon dots    quench and restore    Cu2+    Arginine
收稿日期:  2021-12-31      修回日期:  2022-09-19           出版日期:  2022-11-20
ZTFLH:  TQ110  
通讯作者:  盛同范(1975-),男,本科,高级工程师,从事无机/有机微纳米复合材料及其应用的研究,通讯联系人,shengsheng185@163.com;张晖(1997-),女,硕士生,研究方向为有机/无机微纳米复合材料的合成及应用,通讯联系人,zhanghuimg2021@163.com。    E-mail:  shengsheng185@163.com;zhanghuimg2021@163.com
作者简介:  陈修阳(1979-),男,硕士,高级工程师,从事粉体微纳米材料的基础与应用研究,xychen2598@126.com
引用本文:    
陈修阳, 潘立志, 盛同范, 周兴平, 张晖. 基于锰掺杂碳点的橘红色荧光纳米开关检测Cu2+和Arg的研究[J]. 现代化工, 2022, 42(11): 249-255.
CHEN Xiu-yang, PAN Li-zhi, SHENG Tong-fan, ZHOU Xing-ping, ZHANG Hui. Detection of Cu2+ and arginine by orange-red fluorescent nano-switch based on Mn-doped carbon dots. Modern Chemical Industry, 2022, 42(11): 249-255.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2022.11.047  或          https://www.xdhg.com.cn/CN/Y2022/V42/I11/249
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