导数荧光法研究异丙醇-水配合物的团簇性质  

Research on cluster characteristics of isopropanol-water complex by derivative fluorometry

作　　者：韩彩芹[1,2] 段培同[1] 吴斌[2] 刘莹[1] 骆晓森[2] 倪晓武[1,2] 

机构地区：[1]徐州师范大学物理与电子工程学院,江苏徐州221116 [2]南京理工大学理学院,江苏南京210094

出　　处：《光电子．激光》2010年第7期1097-1101,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60878023);江苏省自然科学基金资助项目(BK2007204)

摘　　要：实验获得了异丙醇-水配合物的激发光谱和发射光谱,分析了其荧光发射机理,并用波长为220和232 nm的紫外光激发不同体积百分比的配合溶液得到了荧光光谱,在FFT低通滤波和平滑处理基础上运用导数荧光分析法对其进行优化,进而研究了异丙醇-水配合物的分子团簇性质。结果表明,配合物中异丙醇分子与水分子在H键作用下,以不同方式结合可以形成7种能发荧光的团簇分子,其发射荧光的中心波长分别为277、284、293、309、328、345和362 nm,并根据相对峰位强度得到了各团簇分子数量随溶液浓度变化的规律。The excitation and emission spectra of isopropanol-water complex are studied experimentally,and the fluorescence emission mechanism is analyzed.The fluorescence spectra of isopropanol-water complex with different volume percentages excited by ultraviolet light with wavelengths of 220 nm and 232 nm are obtained,which are optimized by derivative fluorescence spectrometry based on the method of FFT low-pass filtering and smoothing,and the molecular cluster characteristics of isopropanol-water complex are investigated.The results indicate that there are 7 types of luminescent cluster molecules by the action of hydrogen bonds,formed by isopropanol and water molecules in different ways,exist in the solution.The center wavelengths of each cluster′s fluorescence spectra locate at 277 nm,284 nm,293 nm,309 nm,328 nm,345 nm and 362 nm,respectively.The changes of these luminescent clusters with solution concentration are obtained by measuring the relative peak values in the second derivative fluorescence spectra.

关 键 词：异丙醇-水配合物 分子团簇结构 荧光发射 导数光谱 

分 类 号：O433.4[机械工程—光学工程]