乙醚的荧光光谱及其特性

用UV-240紫外分光光度计和SP-2558多功能光谱测量系统,通过测量紫外吸收光谱和荧光光谱,对乙醚在紫外光激励下的光谱特性进行了实验研究.发现,乙醚能吸收波长小于304 nm的紫外光,产生强的荧光;乙醚的荧光峰是波长306 nm至345 nm范围的宽谱峰,峰值波长在317 nm左右.分析得出,乙醚吸收紫外光、产生荧光光谱是其分子中氧原子上的孤对电子跃迁所为.由此对乙醚荧光光谱的产生机理和特性作出了解释,并计算出了乙醚分子相应能级差.这些结果可为乙醚这种重要溶剂和麻醉剂的应用提供帮助.

Fluorescence spectra of ethyl ether and its characteristic

Using UV-240 spectrophotometer and SP-2558 multifunctional spectrometer system,the spectral characteristic of ethyl ether induced by UV-light has been experimentally studied with the UV-light absorption spectra and the fluorescence spectra.Then find out that ethyl ether can absorb the UV-light,the wavelength of that is lower than 304 nm,and can produce strong fluorescence.The fluorescence spectrum is within a ranging from 306 nm to 345 nm.Its peak wavelength is about 317 nm.The analysis results show that the fact of the ethyl ether absorbs the UV-light and produces fluorescence spectrum comes from the transitions of lone-pair electrons in the oxygen atom of ethyl ether molecule.Then the characteristic and the mechanism of the fluorescence spectra of ethyl ether are explained,the energy gap of ethyl ether molecule is calculated.These results can provide a helps for the application of ethyl ether that is an important solvent and anaesthetic.