Temperature dependent photoluminescence from a cyano-substituted phenylene vinylene polymer.

被引：31

作者：

Rumbles, G

Samuel, IDW

Collison, CJ

Miller, PF

Moratti, SC

Holmes, AB

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AY, England

[2] Univ Durham, Dept Phys, Durham DH1 3LE, England

[3] Melville Lab Polymer Synthesis, Cambridge CB2 3RA, England

来源：

SYNTHETIC METALS | 1999年 / 101卷 / 1-3期

关键词：

optical absorption and emission spectroscopy; photoluminescence; time-resolved fast spectroscopy; poly (phenylene vinylene) and derivatives;

D O I：

10.1016/S0379-6779(98)00367-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report some steady-state and time-resolved photoluminescence (PL) studies of a cyano-substituted phenlyene vinylene polymer film as a function of temperature. In contrast to simple aromatic molecules, on reducing the temperature the luminescence spectrum drops in intensity, gains structure and shifts to lower energy. While the rate of decoy of the FL increases at short wavelengths and remains almost constant at long wavelengths. Using a simple kinetic scheme involving an intra-chain and an inter-chain excitation, we have successfully explained these data in terms of a delayed luminescence model.

引用

页码：158 / 161

页数：4

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