江汉大学学报(自然科学版) ›› 2015, Vol. 43 ›› Issue (6): 496-500.doi: 10.16389/j.cnki.cn42-1737/n.2015.06.003

• 光电化学材料与器件研究 • 上一篇    下一篇

温度对PS分子链荧光特性的影响研究

王圆,彭莎,鲍涛,胡成龙,陈韶云*   

  1. 江汉大学 光电化学材料与器件教育部重点实验室,化学与环境工程学院,湖北 武汉 430056
  • 出版日期:2015-12-28 发布日期:2016-01-12
  • 通讯作者: 陈韶云
  • 作者简介:王圆(1990—),男,硕士生,研究方向:聚合物光谱学的应用。
  • 基金资助:
    江汉大学博士科研启动经费资助项目(3003-06000021)

Effect of Temperature on Fluorescence Properties of Polystyrene

WANG Yuan,PENG Sha,BAO Tao,HU Chenglong,CHEN Shaoyun*   

  1. Key Laboratory of Optoelectronic Chemical Materials and Devices,Ministry of Education,School of Chemistry and Enviromental Engineering,Jianghan University,Wuhan 430056,Hubei,China
  • Online:2015-12-28 Published:2016-01-12
  • Contact: CHEN Shaoyun
  • About author:陈韶云(1984—),女,讲师,博士,研究方向:金属卟啉模拟酶仿生催化均相氧化反应研究。E-mail:ceshcl@163.com

摘要: 利用荧光光谱法研究了温度和浓度对聚苯乙烯(polystyrene,PS)荧光特性的影响。研究表明,PS在四氢呋喃溶液中有2个荧光发射波长:334、345 nm,并且荧光强度随着温度的升高而升高,原因可能是溶剂效应限制了PS 分子链的运动,使分子间碰撞的几率减少。另外随着溶液浓度的增加,PS 的荧光强度逐渐下降,其原因可能是当溶液处于较高浓度时,分子之间的相互作用增大,PS二聚体的形成导致发生荧光淬灭现象。

关键词: 聚苯乙烯(PS), 荧光光谱, 二聚体, 能量转移

Abstract: The effect of temperature and concentration on the fluorescence properties of polystyrene(PS) was analyzed with fluorescence spectrum. The results showed that there were two fluorescence emission wavelength:334 nm and 345 nm in tetrahydrofuran solution,and the fluorescence intensity of PS enhanced as the temperature rises due to cage effect of solvent. In addition,with the increase of the concentration of PS in the solution,the fluorescent intensity decreases nonlinearly,this is because PS dimers are formed in the solvent.

Key words: polystyrene(PS), fluorescence spectroscopy, dimers, energy transfer

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