异丙醇-水配合液的荧光偏振和时间分辨特性

韩彩芹; 段培同; 吴斌; 刘莹; 骆晓森; 倪晓武

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异丙醇-水配合液的荧光偏振和时间分辨特性

光谱分析 | 更新时间：2020-08-12

- 异丙醇-水配合液的荧光偏振和时间分辨特性
- Fluorescence Polarization and Time Resolved Characteristics of Isopropanol-water Mixture
- 发光学报 2011年32卷第12期页码：1303-1307
- 作者机构：
  
  1. 南京理工大学理学院,江苏南京,210094
  2. 徐州师范大学物理与电子工程学院,江苏徐州,221116
- 作者简介：
- 基金信息：
  
  国家自然科学基金(60878023)();江苏省高校优势学科建设工程资助项目()
- DOI：
  中图分类号： O433.4
- 收稿日期：2011-09-03，
  
  修回日期：2011-10-18，
  
  网络出版日期：2011-12-22，
  
  纸质出版日期：2011-12-22
- 稿件说明：
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韩彩芹, 段培同, 吴斌, 刘莹, 骆晓森, 倪晓武. 异丙醇-水配合液的荧光偏振和时间分辨特性[J]. 发光学报, 2011,32(12): 1303-1307

HAN Cai-qin, DUAN Pei-tong, WU Bin, LIU Ying, LUO Xiao-sen, NI Xiao-wu. Fluorescence Polarization and Time Resolved Characteristics of Isopropanol-water Mixture[J]. Chinese Journal of Luminescence, 2011,32(12): 1303-1307
韩彩芹, 段培同, 吴斌, 刘莹, 骆晓森, 倪晓武. 异丙醇-水配合液的荧光偏振和时间分辨特性[J]. 发光学报, 2011,32(12): 1303-1307 DOI：

HAN Cai-qin, DUAN Pei-tong, WU Bin, LIU Ying, LUO Xiao-sen, NI Xiao-wu. Fluorescence Polarization and Time Resolved Characteristics of Isopropanol-water Mixture[J]. Chinese Journal of Luminescence, 2011,32(12): 1303-1307 DOI：

摘要

研究了紫外光照射下异丙醇-水配合液的偏振荧光光谱

以及不同荧光峰处光子强度随时间的衰变过程

计算了偏振度并讨论了其偏振特性

测试了不同峰位对应的荧光寿命并分析了其荧光发射特性。结果表明

异丙醇-水配合液在紫外光激励下发射的荧光为具有确定分子取向的部分偏振光

偏振度和各向异性度分别为0.542和0.441。在波长为220 nm和232 nm的激发光照射下

荧光峰位于277

284

293

309 nm

对应寿命均约为17 ns。而328

345

362 nm荧光峰对应的平均寿命分别约为21

16 ns

这与氢键作用下异丙醇和水形成团簇结构的相对稳定性有关。

Abstract

The polarization fluorescence spectra of isopropanol-water mixture excited by ultraviolet light was studied experimentally. The decay process of fluorescence intensity was detected at different center emission peaks. The curve was fitted by an exponential function and the processing data was obtained by deconvolution. Both the polarization degree and fluorescence lifetime were calculated

and mathematical characterization was performed for the fluorescence counts decay curves. The fluorescence emission and polarization characteristics were discussed. It is found that the isopropanol-water mixture excited by ultraviolet light obtains partially polarized fluorescence with certain molecular orientation. The polarization degree and anisotropy degree are 0.542 and 0.441

respectively. Induced by exciting light with wavelengths of 220 nm and 232 nm

the fluorescence lifetime of isopropanol-water mixture at peaks of 277

284

293

309 nm is about 17 ns. While the average fluorescence lifetime at peaks of 328 nm

345 nm and 362 nm is around 21

16 ns

respectively. It is related with the molecular cluster structure relative stability of isopropanol-water mixture by the action of hydrogen bond. The research will contribute to the study of the molecular characteristic of isopropanol-water cluster.

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references

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