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采用Roper Scientific SP_2558多功能光谱测量系统对色谱纯甲醇溶液在紫外光激励下产生的荧光光谱进行了实验研究。实验结果表明,甲醇溶液能吸收紫外光并向外发射峰值位于340nm附近的荧光光谱,同时得到了能产生荧光光谱的最长激励光波长的临界值为245nm左右。对甲醇分子发射荧光的机理进行了讨论,给出了与实验结果相一致的理论分析。研究甲醇的荧光光谱可为其作为有机溶剂和催化剂时对其他有机大分子相关光谱的影响提供理论和实验上的参考,并可直接为荧光探针技术的发展提供服务。
The fluorescence spectra of the pure methanol solution under ultraviolet excitation were investigated by Roper Scientific SP_2558 multifunctional spectroscopy system. The experimental results show that the methanol solution can absorb ultraviolet light and emit the fluorescence spectrum with the peak near 340nm, and the critical wavelength of the longest excitation light which can generate the fluorescence spectrum is about 245nm. The mechanism of methanol fluorescence emission was discussed, and the theoretical analysis consistent with the experimental results was given. Studying the fluorescence spectra of methanol can provide theoretical and experimental references for its influence on the spectra of other organic macromolecules when used as organic solvents and catalysts, and can directly serve the development of fluorescence probe technology.