Luminescence of microcrystals and solutions of 8-azagona-1,3,5(10),13-tetraene-12,17-dione

被引：2

作者：

Bagnich, SA

Khropik, NN

Knyukshto, VN

Bässler, H

Mikhalchuk, AL

机构：

[1] Natl Acad Sci Belarus, Inst Atom & Mol Phys, Minsk 220072, BELARUS

[2] Univ Marburg, Inst Phys, Nucl & Macromol Chem & Mat Sci Ctr, D-35032 Marburg, Germany

[3] Natl Acad Sci Belarus, Inst Bioorgan Chem, Minsk 220141, BELARUS

来源：

CHEMICAL PHYSICS | 2002年 / 282卷 / 01期

关键词：

8-azasteroid; luminescence; solid solution;

D O I：

10.1016/S0301-0104(02)00620-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present the results of the investigation of delayed luminescence of 2,3-methoxy-8-azagona-1,3,5(10),13-tetraene-12,17-dione (8,9-dimethoxy-1,2,3,5,6,10b,11,12-octahydrocyclopentane[5,6]pyrido[2,1-a]isoquinoline-1,12dione) in solid solutions. Dual delayed luminescence with maxima in the region of 400 and 500 nm depending on the excitation wavelength has been revealed. It is shown that the observed delayed luminescence is a phosphorescence of individual molecules of the substance (short-wavelength luminescence) and molecular pairs (long-wavelength luminescence) resulting from the dipole-dipole (Coulomb) interaction of strongly polarized molecules. The conclusion has been drawn that the spectral features observed for the solutions of 8-azasteroids are due to both individual molecules and their aggregates. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：81 / 87

页数：7

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