PREPARATION AND SPECTROSCOPIC CHARAC-TERIZATION OF LB FILMS OF PORPHYRINS WITHOUT LONG ALKYL CHAINS

Cui Haining; Wang Wenyun; Yu Yingning

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PREPARATION AND SPECTROSCOPIC CHARAC-TERIZATION OF LB FILMS OF PORPHYRINS WITHOUT LONG ALKYL CHAINS

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- PREPARATION AND SPECTROSCOPIC CHARAC-TERIZATION OF LB FILMS OF PORPHYRINS WITHOUT LONG ALKYL CHAINS
- Chinese Journal of Luminescence Vol. 13, Issue 2, Pages: 165-170(1992)
- 作者机构：
  
  中国科学院长春应用化学研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：29 April 1991，
  
  Published：30 May 1992
- 稿件说明：
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崔海宁, 王文韵, 于英宁. 无长链天然卟啉的LB膜制备与光谱研究[J]. 发光学报, 1992,13(2): 165-170

Cui Haining, Wang Wenyun, Yu Yingning. PREPARATION AND SPECTROSCOPIC CHARAC-TERIZATION OF LB FILMS OF PORPHYRINS WITHOUT LONG ALKYL CHAINS[J]. Chinese Journal of Luminescence, 1992,13(2): 165-170
崔海宁, 王文韵, 于英宁. 无长链天然卟啉的LB膜制备与光谱研究[J]. 发光学报, 1992,13(2): 165-170 DOI：

Cui Haining, Wang Wenyun, Yu Yingning. PREPARATION AND SPECTROSCOPIC CHARAC-TERIZATION OF LB FILMS OF PORPHYRINS WITHOUT LONG ALKYL CHAINS[J]. Chinese Journal of Luminescence, 1992,13(2): 165-170 DOI：

摘要

本工作对无长链天然血卟啉(HP)

原叶啉(PP)和卟啉C行进了LB膜的成膜探索

制备了单层、多层以及与硬脂酸、卵磷脂混合后的复合LB膜.对它们进行了紫外——可见吸收光谱、荧光光谱和时间分辨荧光光谱的研究

发现在LB膜中荧光寿命是一个很好的表征手段.

Abstract

In this paper we report the formation of stable and ordered Lang-muir-Blodgett(LB) film of natural porphyrins without long alkyl chains (Hematoporphyrin

protoporphyrin and porphyrin C). Monolayer and multilayers of porphyrins and porphyrins mixed with stearic acid or phos-phoilpid were studied on solid substrates. The utility of complementary experimental techniques such as UV-visible absorption spectroscopy

steady-state and time-resolved fluorescence spectroscopy in yielding information about stable solid-condensed LB films with the conjugated ring plane obliquely orientated on the substrate is highlighted. There is considerable interaction between porphyrin molecules in the same layer of the films and this leads to peak broadening

red shift

fluorescence lifetime shortening

fluorescence-quenching and so on. All these phenome-naare consistent with the formation of aggregate species in LB films studied.

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references

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