EFFECT OF TEMPERATURE ON OPTICAL-PROPERTIES OF REACTION CENTERS ORGANIZED IN LANGMUIR-BLODGETT-FILMS

被引：10

作者：

ANTOLINI, F ^{[1
]}

TROTTA, M ^{[1
]}

NICOLINI, C ^{[1
]}

机构：

[1] CNR,CTR STUDI CHIM FIS INTERAZ LUCE MAT,BARI,ITALY

来源：

THIN SOLID FILMS | 1995年 / 254卷 / 1-2期

关键词：

HEAT TREATMENT; LANGMUIR-BLODGETT FILMS; OPTICAL PROPERTIES;

D O I：

10.1016/0040-6090(94)06245-G

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Reaction centres (RC) isolated from Rhodobacter sphaeroides were arranged in Langmuir-Blodgett (LB) film. The deposited layers were investigated with a spectrophotometric assay after heating at different temperatures up to 473 K. The examination of the optical properties of RCs gives a first indication of the molecule stability in the film after temperature treatment. Comparisons of LB absorption spectra between film and solution after treatment at different temperatures were carried out. The absorbing bands of Bacteriopheophytin (Bphe), Bacteriochlorophyll (BChl) and Bacteriochlorophyll dimer (BChl(2)) were investigated. The results indicate that RCs which in the solution appear stable up to 318 K maintain their absorption spectrum up to 358 K inside the film. The role of LB organization was checked by measuring the optical properties of non-oriented films after heating at different temperatures.

引用

页码：252 / 256

页数：5

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