A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS*

YANG Guoqiang; WU Shikang

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A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS*

Papers | Updated：2021-06-21

- A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS*
- A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS*
- 高分子科学（英文版） 1994年12卷第3期页码：237-245
- Affiliations：
  
  1.   Institute of Photographic Chemistry
  2.   Academia Sinica
  3.   Beijing
  4.   100101
- Author bio：
- Funds：
- DOI：
  中图分类号： O631.5
- 纸质出版：1994-09-20
- Accepted：
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[1]杨国强,吴世康.A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS[J].Chinese Journal of Polymer Science,1994,{4}(03):237-245.

YANG Guoqiang, WU Shikang. A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS*[J]. 1994, 12(3): 237-245.
[1]杨国强,吴世康.A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS[J].Chinese Journal of Polymer Science,1994,{4}(03):237-245. DOI：

YANG Guoqiang, WU Shikang. A KIND OF FLUORESCENCE PROBE TO STUDY THE KINETICS OF POLYMERIZATION PROCESS*[J]. 1994, 12(3): 237-245. DOI：

摘要

<正> Fluorescence properties of 1-pheny1-3-（4’-nitrophenyl） pyrazoline （PNP） were studied inbulk polymerization process of methylmethacrylate （MMA）. The fluorescence intensity of PNPwas enhanced and the emission maximum was blue shifted with the polymerization progress. Inthe period of auto-acceleration of the polymerization the enhancement of fluorescence intensityand blue shift of peak wavelength in spectra could be observed evidently. This means that thesolvatochromic properties of PNP are influenced not only by the solvent polarity but also by theviscosity of the medium （especially by the phase transitiott）. In solid state PNP emits from thecharge transfer excited state without solvent relaxation. The transient emission spectra and theresults from Bakhshiev model of solvent relaxation coincide with that from the polymerizationexperiment.

Abstract

Fluorescence properties of 1-pheny1-3-（4’-nitrophenyl） pyrazoline （PNP） were studied inbulk polymerization process of methylmethacrylate （MMA）. The fluorescence intensity of PNPwas enhanced and the emission maximum was blue shifted with the polymerization progress. Inthe period of auto-acceleration of the polymerization the enhancement of fluorescence intensityand blue shift of peak wavelength in spectra could be observed evidently. This means that thesolvatochromic properties of PNP are influenced not only by the solvent polarity but also by theviscosity of the medium （especially by the phase transitiott）. In solid state PNP emits from thecharge transfer excited state without solvent relaxation. The transient emission spectra and theresults from Bakhshiev model of solvent relaxation coincide with that from the polymerizationexperiment.

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