黄色荧光碳点用于检测柠檬黄的研究
Study on Yellow Fluorescent Carbon Dots for Detection of Lemon Yellow
王光辉 1于盼 1郭建花 1孟雅婷 1成哲 1邢剑波 2董川1
作者信息
- 1. 山西大学 环境科学研究所,环境与资源学院,山西 太原 030006
- 2. 大同市生态环境评估中心,山西 大同 037006
- 折叠
摘要
本文以4-硝基-1,8-萘二甲酸苷和苯丙氨酸为原料,通过一步水热法合成了黄色荧光碳点(Y-CDs).该碳点的最佳激发为422 nm,最佳发射为547 nm,荧光量子产率达9.3%.柠檬黄可以通过内滤效应快速猝灭Y-CDs的荧光,以此构建了检测柠檬黄的荧光传感器,实现了目前最长发射波长荧光法检测.其线性范围为0.25 μmol/L～14.8 μmol/L,检出限为58 nmol/L,具有良好的选择性.该传感器已应用于汾河水样和饮料中柠檬黄检测,回收率为94.58%～101.99%.此外,Y-CDs还可用于制备Y-CDs/PVA复合材料作为荧光发光薄膜,呈现亮黄色固体荧光.以上结果表明,Y-CDs在环境检测和固体发光薄膜等领域表现出潜在的应用价值.
Abstract
In this paper,yellow carbon dots(Y-CDs)were synthesized by one step hydrothermal method with 4-nitro-1,8-naphthalene diarboside and phenylalanine as precursors.The optimal excitation and emission wavelength of carbon dots are 422 nm and 547 nm,and the fluorescence quantum yield is 9.3%.Due to the inner filter effect(IFE),the fluorescence of Y-CDs was quenched significant-ly in the presence of lemon yellow.As a result,the fluorescence sensor for detection of lemon yellow was successfully constructed and the fluorescence detection method with good selectivity based on long-wavelength emissive carbon dots was realized.The linear range is 0.25 μmol/L～14.8 μmol/L,while the detection limit is calculated as 58 nmol/L.The sensor was applied to the detection of lemon yellow in beverage and Fenhe river samples,with recovery ranging from 94.58%to 101.99%.In addition,Y-CDs could also be used to prepare Y-CDs/PVA composites as fluorescent luminescent films,which showed bright yellow solid fluorescence.These results show that Y-CDs has potential application value in environmental detection and solid luminescent films.
关键词
碳点/荧光传感器/柠檬黄/内滤效应Key words
carbon dots/fluorescence sensor/lemon yellow/IFE引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据