微波辅助法合成硼、氮掺杂碳点用于检测抗坏血酸

引用本文: 李佳昕, 刘梦婷, 卢朝粉, 徐娅娟, 曹秋娥, 周川华. 微波辅助法合成硼、氮掺杂碳点用于检测抗坏血酸[J]. 分析化学, 2023, 51(2): 211-218. doi: 10.19756/j.issn.0253-3820.221314 shu

Citation: LI Jia-Xin, LIU Meng-Ting, LU Chao-Fen, XU Ya-Juan, CAO Qiu-E, ZHOU Chuan-Hua. Microwave-assisted Synthesis of Boron and Nitrogen-doped Carbon Dots for Detection of Ascorbic Acid[J]. Chinese Journal of Analytical Chemistry, 2023, 51(2): 211-218. doi: 10.19756/j.issn.0253-3820.221314 shu

微波辅助法合成硼、氮掺杂碳点用于检测抗坏血酸

云南大学化学科学与工程学院, 化学化工国家级教学示范中心(云南大学), 昆明 650091

通讯作者: 周川华,E-mail:chzhou@ynu.edu.cn

基金项目:
云南省万人计划青年拔尖人才项目资助。

摘要: 以乙二胺为碳源和氮源，4-羟基苯硼酸为硼掺杂剂，采用微波辅助法一步合成了硼、氮掺杂碳点（B,N-CDs）。通过透射电子显微镜、紫外-可见吸收光谱、荧光光谱、X射线光电子能谱对其形貌、光学性质等进行表征。B,N-CDs的最大激发和发射波长分别为400和510 nm。以硫酸奎宁为参照，B,N-CDs的相对量子产率为9.94%。Fe³⁺的存在可使此CDs的荧光猝灭，而抗坏血酸（AA）可通过将Fe³⁺还原为Fe²⁺，使B,N-CDs的荧光恢复，基于此，建立了一种检测AA的荧光分析方法。本方法对AA具有良好的选择性，在1.0~80.0 μmol/L浓度范围内，B,N-CDs的荧光恢复程度与AA的浓度呈良好的线性关系，检出限为0.49 μmol/L（S/N=3）。将此方法应用于果汁中AA的测定，结果较好。

关键词:

English

Microwave-assisted Synthesis of Boron and Nitrogen-doped Carbon Dots for Detection of Ascorbic Acid

National Demonstration Center for Experimental Chemistry and Chemical Engineering Education (Yunnan University), School of Chemical Science and Technology, Yunnan University, Kunming 650091, China

Corresponding author: ZHOU Chuan-Hua, chzhou@ynu.edu.cn

Received Date: 27 June 2022
Revised Date: 14 August 2022
Fund Project:
Supported by the Youth Top-notch Talants of Yunan Ten Thousand Talents Plan, China.

Abstract: By using ethylenediamine as carbon source and nitrogen source, and 4-hydroxyphenylboronic acid as boron dopant, the boron and nitrogen-doped carbon dots (B,N-CDs) were synthesized in one step using a microwaveassisted method. Its morphology and optical properties were characterized by transmission electron microscopy, ultraviolet-visible absorption spectroscopy, fluorescence spectroscopy, and X-ray photoelectron spectroscopy, respectively. The maximum excitation and emission wavelengths of the carbon dots were 400 nm and 510 nm, respectively. By taking quinine sulfate as a reference, the relative quantum yield of the carbon dots was 9.94%. The presence of Fe³⁺ could quench the fluorescence of the B,N-CDs, and the fluorescence recovery took place in the presence of ascorbic acid (AA) by reducing Fe³⁺ to Fe²⁺. Based on this, a new fluorescence analysis method for detecting AA was established with good selectivity. The fluorescence recovery degree of B,N-CDs showed a good linear relationship with AA concentration in the range of 1.0-80.0 μmol/L, and the detection limit was 0.49 μmol/L (S/N=3). The method was applied to determination of AA in fruit juice with satisfactory results.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

微波辅助法合成硼、氮掺杂碳点用于检测抗坏血酸

通讯作者: 周川华,E-mail:chzhou@ynu.edu.cn

English

Microwave-assisted Synthesis of Boron and Nitrogen-doped Carbon Dots for Detection of Ascorbic Acid

Corresponding author: ZHOU Chuan-Hua, chzhou@ynu.edu.cn

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

微波辅助法合成硼、氮掺杂碳点用于检测抗坏血酸

通讯作者: 周川华,E-mail:chzhou@ynu.edu.cn

English

Microwave-assisted Synthesis of Boron and Nitrogen-doped Carbon Dots for Detection of Ascorbic Acid

Corresponding author: ZHOU Chuan-Hua, chzhou@ynu.edu.cn

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

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