摘要
通过加热3-氨丙基三乙氧基硅烷(APTES)、抗坏血酸钠和柠檬酸钠制备了一种硅量子点(SiQDs)。利用该SiQDs构建了一种基于静电吸附导致的荧光猝灭和紫外吸收增强双模式的高效、灵敏和便捷的绿原酸(CGA)检测方法。SiQDs具有良好的水溶性以及对CGA优异的选择性,且荧光量子产率高达0.58。在最佳工作条件下,SiQDs的荧光检测线性范围为0.054~265μmol/L,检出限为0.018μmol/L。SiQDs的吸光度检测范围为0.516~45.0μmol/L,检出限为0.172μmol/L。此外,运用加标回收的方法实现了对金银花中绿原酸的分析检测,表现出良好的回收率(97.76%~105.5%)。
A silicon quantum dots(SiQDs)was prepared by refluxing 3-aminopropyltriethoxysilane(APTES),sodium ascorbate and sodium citrate with heating at 90 C.Based on the SiQDs,an efficient,sensitive and convenient method for the detection of chlorogenic acid(CGA)was constructed based on the dual-mode fluorescence and UV absorption via electrostatic adsorption between SiQDs and CGA.The SiQDs possessed good water solubility as well as excellent selectivity for CGA.The fluorescence quantum yield(QD)of SiQDs was as high as 0.58.Under the optimal working conditions,the linear range of fluorescence detection of SiQDs was 0.054~265μmol/L,and the limit of detection was 0.018μmol/L.The absorbance detection of SiQDs was 0.516~45μmol/L,and the limit of detection was O.172μmol/L.In addition,the analytical detection of CGA in Lonicera japonica Thunb.was realized by using the spiked recovery method,which showed good recoveries(97.76%~105.5%).
作者
王松柏
李天宇
魏梦姝
郭炘明
李俊芬
周影
彭秀英
董川
WANG Song-Bai;LI Tian-Yu;WEI Meng-Shu;GUO Xin-Ming;LI Jun-Fen;ZHOU Ying;PENG Xiu-Ying;DONG Chuan(School of Chemistry and Chemical Engineering,Institute of Environmental Science,Shanxi University,Taiyuan 030006,China;Department of Environment and Safety Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China)
出处
《应用化学》
北大核心
2025年第4期511-521,共11页
Chinese Journal of Applied Chemistry
基金
山西省回国留学人员科研项目(Nos.2021-011,2021-012)
山西省基础研究计划(Nos.202103021223351,20210302123447)资助。
关键词
硅量子点
3-氨丙基三乙氧基硅烷
绿原酸
荧光探针
Silicon quantum dots
3-Aminopropyltriethoxysilane
Chlorogenic acid
Fluorescent probe
作者简介
通讯联系人:王松柏,E-mail:wsb9696@sxu.edu.cn;通讯联系人:董川,E-mail:dc@sxu.edu.cn。
