吉林大学学报（理学版）Issue(3)：596-600,5.DOI:10.13413/j.cnki.jdxblxb.2014.03.37
CdTe量子点荧光猝灭法检测甲醛浓度
Determination of Formaldehyde by Fluorescence Quenching of CdTe Quantum Dots
摘要
Abstract
The effect of formaldehyde on the quenching of quantum dots (QDs)was studied via fluorescence quenching.The quenching mechanism was a dynamic quenching process,which was proved by the quenching rate constant Kq=5.67×1011 L/(mol·s)and UV-Vis absorption spectra. As a fluorescent probe, the quantum dots can be used to determine the concentration of formaldehyde,based on the linear relationship between the fluorescence intensity of CdTe QDs and the concentration of formaldehyde.Compared with spectrophotometry,this method can provide theoretical basis for developing a new type of formaldehyde fluo-photodetector.关键词
量子点/甲醛/分光光度法/荧光猝灭/动态猝灭Key words
quantum dots (QDs )/formaldehyde/spectrophotometry/fluorescence quenching/dynamic quenching分类
化学化工引用本文复制引用
金丽,张建坡,曹雪玲,娄大伟..CdTe量子点荧光猝灭法检测甲醛浓度[J].吉林大学学报（理学版）,2014,(3):596-600,5.基金项目
吉林省科技支撑计划重点项目(批准号:20110345)和吉林省教育厅“十二五”科学技术重点项目(批准号:20110258) （批准号:20110345）
