摘要
研究了四氢呋喃在不同溶剂不同质量分数下荧光光谱,并对其产生机理和谱线特性进行了探讨。实验结果表明:不同溶剂不同质量分数的四氢呋喃在紫外光照射下,荧光峰值波长都位于309 nm左右;在正己烷溶剂中四氢呋喃荧光相对强度与其质量分数成线性关系,而在水溶剂中只有低浓度时荧光相对强度才与浓度成线性关系;同一质量分数四氢呋喃溶液在水溶剂中产生的荧光相对强度比在正己烷溶剂中要大得多。淀粉、四氢呋喃分子都具有环氧结构。深入研究四氢呋喃简单分子的荧光光谱特性,有助于进一步探讨淀粉荧光光谱的特性。
In this manuscript, fluorescence spectra of tetrahydrofuran with different concentrations dissolved in different solvents were studied. Their emitting mechanism and spectral characteristics were also discussed. The results indicated that tetrahydrofuran with different concentrations dissolved in different solvents excited by UV can emit fluorescence and the peak wavelengths were always about 309 nm. The fluorescence relative intensity of tetrahydrofuran dissolved in n- hexane had linear relation to its concentration. The linear relation only in a low concentration range while dissolve in water. The fluorescence of water solution was much stronger that in n-hexane. The investigation on fluorescence spectra and its characteristics of tetrahydrofuran contribute to further study of starch since both of them have similar epoxy structure.
出处
《食品与生物技术学报》
CAS
CSCD
北大核心
2008年第1期53-56,共4页
Journal of Food Science and Biotechnology
基金
国家自然科学基金项目(20276027)
关键词
四氢呋喃
荧光光谱
自由基
接枝共聚反应
tetrahydrofuran
fluorescence spectrum
free radical
graft copolymerization
