高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (2): 214.

• 论文 • 上一篇    下一篇

β-溴代萘的无保护流体室温磷光性质及介质效应

牟兰1, 陈小康2, 李隆弟3   

  1. 1. 贵州大学化学系, 贵阳 550025;
    2. 韶关大学化学系, 韶关 512005;
    3. 清华大学化学系, 北京 100084
  • 收稿日期:1998-06-10 出版日期:1999-02-24 发布日期:1999-02-24
  • 通讯作者: 李隆弟
  • 作者简介:牟兰,女,35岁,副教授.
  • 基金资助:

    国家自然科学基金

Nonprotected Fluid Room Temperature Phosphorescence of Bromonaphthalene and Its Medium Effects

MOU Lan1, CHEN Xiao-Kang2, LI Long-Di3   

  1. 1. Department of Chemistry, Guizhou Universitya, Guiyang, 550025;
    2. Department of Chemistry, Shaoguan Universityb, Shaoguan 512005;
    3. Department of Chemistry, Tsinghua Universityc, Beijing, 100084
  • Received:1998-06-10 Online:1999-02-24 Published:1999-02-24

摘要: 无任何保护性介质存在下,β-溴代萘(β-BrN)水溶液仅以Na2SO3作化学除氧剂,经仪器光源适当照射,即能很快产生强而稳定的室温磷光(RTP)信号.不同种类和用量的有机溶剂存在时,RTP强度和获得稳定RTP信号所需光诱导的时间显著不同.含2.5%乙腈的β-BrN水溶液仅需极短的光诱导时间就能产生很强的RTP发射,β-BrN浓度在8.0×10-8~1.6×10-5mol/L范围内与其RTP强度呈良好线性关系,检出限4.7×10-8mol/L

关键词: &beta, -溴代萘, 无保护流体室温磷光, 介质效应

Abstract: Astrong and stable room temperature phosphorescence(RTP) signal of bromonaphthalene(β-BrN) aqueous solution with peak wavelengths of λexem=275.0 nm/(494/3, 517/6) nm can be induced only by using Na2SO3as an oxygen scavenger and irradiating the solution for some time with the light source of apparatus. The RTP intensity and irradiation time required to acquire a stable RTP signal are very sensitive to the kind and amount of organic solvent added to the system. For a β-BrN/Na2SO3aqueous solution system containing 25% acetonitrile, a short irradiation time is needed and a strong and stable RTP signaLIs triggered quickly. The RTP intensity is linear to the BrN concentration in the range 8.0×10-8-1.6×10-5mol/Lwith the detection limit of 4.7×10-8mol/L.

Key words: Bromonaphthalene, Nonprotected fluid room temperature phosphorescence, Medium effects

中图分类号: 

TrendMD: