5-Br-PADAPUV-Vis光谱的溶剂效应

引用本文: 鲍霞, 张小玲, 王凤武. 5-Br-PADAPUV-Vis光谱的溶剂效应[J]. 应用化学, 2006, 23(7): 757-761. shu

Citation: BAO Xia, ZHANG Xiao-Ling, WANG Feng-Wu. The Effects of Solvents on UV-Vis Spectra of 5-Br-PADAP[J]. Chinese Journal of Applied Chemistry, 2006, 23(7): 757-761. shu

5-Br-PADAPUV-Vis光谱的溶剂效应

鲍霞 ^a,b, ,
张小玲 ^{a,
,} ,
王凤武 ^b,

1.
a 北京理工大学理学院化学系北京 100081;
2.
b 淮南师范学院化学系淮南

通讯作者: 张小玲,1963年生,女,教授,博士生导师;E-mail:zhangxl000@126.com;研究方向:有机试剂的合成及应用

基金项目:
安徽省重点科研计划资助项目(0302206) (0302206)

摘要: 对比考察了多种溶剂介质中2-(5-溴-2-吡啶偶氮)-5-乙基氨基酚(5-Br-PADAP)吸收光谱,其吸收光谱形状与峰位随溶剂性质和浓度改变。以甲醇为溶剂时,浓度为1×10^-5 mol/L 5-Br-PADAP溶液的吸收峰出现显著红移。研究发现,吸收光谱随浓度有很大变化,染料主次吸收峰改变时的浓度与其共振散射峰出现时的浓度一致。试剂在不同溶剂中的核磁共振光谱亦有很大差异。探讨了染料光谱变化产生的原因及作用机理。

关键词:

English

The Effects of Solvents on UV-Vis Spectra of 5-Br-PADAP

1.
a Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081;
2.
b Chemistry Department of Huainan Normal university, Huainan

Corresponding author: 张小玲,1963年生,女,教授,博士生导师;E-mail:zhangxl000@126.com;研究方向:有机试剂的合成及应用

Received Date: 02 November 2005
Fund Project:
安徽省重点科研计划资助项目(0302206)

Abstract: The UV-Vis absorption spectra of 2-[2-(5-bromo-pyridyl)azo]-5-(diethylamino) phenol(5-Br-PADAP) in various solvents were studied.It was found that both the spectra shape and peak wavelength of 5-Br-PADAP are remarkably sensitive to the nature of the solvent in which it is measured and the concentration of the dye itself.In methanol,1×10^-5 mol/L of 5-Br-PADAP exhibited a dramatic red-shift in comparison with that in "normal" solvents(alcohols,water,etc.).The absorption spectra also changed with the concentration of 5-Br-PADAP,and the change trend is identical with that of resonance light scattering.The concentration where the main absorption peak changed to minor one was in accord with that where the peak of resonance light scattering appeared.The ¹H NMR spectra of 5-Br-PADAP in different solvents were also quite different.The mechanism of the spectra change of 5-Br-PADAP was discussed.

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

5-Br-PADAPUV-Vis光谱的溶剂效应

通讯作者: 张小玲,1963年生,女,教授,博士生导师;E-mail:zhangxl000@126.com;研究方向:有机试剂的合成及应用

English

The Effects of Solvents on UV-Vis Spectra of 5-Br-PADAP

Corresponding author: 张小玲,1963年生,女,教授,博士生导师;E-mail:zhangxl000@126.com;研究方向:有机试剂的合成及应用

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5-Br-PADAPUV-Vis光谱的溶剂效应

通讯作者: 张小玲,1963年生,女,教授,博士生导师;E-mail:zhangxl000@126.com;研究方向:有机试剂的合成及应用

English

The Effects of Solvents on UV-Vis Spectra of 5-Br-PADAP

Corresponding author: 张小玲,1963年生,女,教授,博士生导师;E-mail:zhangxl000@126.com;研究方向:有机试剂的合成及应用

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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