Photo-oxidation phenomenon of MH-PPV films studied by ellipsometry and infrared spectroscopy

被引：4

作者：

Bianchi, RF

Balogh, DT

Gonçalves, D

Faria, RM

Irene, EA

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil

[2] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2002年 / 374卷 / 374期

关键词：

poly(p-phenylenevinylene); photodegradation; refractive index; ellipsometry; photooxidation;

D O I：

10.1080/713738273

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper we study the photo-oxidation phenomenon in the structure of a PPV derivative, the poly[(2-methoxy-5-hexyloxy)-p-phenylenevinylene]-1 - (MH-PPV), using ellipsometry and infrared spectroscopy techniques. Ellipsometric measurements were carried out in MH-PPV films previously exposed to light irradiation in air. It was observed a variation of both real and imaginary components of the refractive index. These variations are related with the replacement of the vinyl C=C bounds by the carbonyl C=O bounds, as confirmed by the infrared absorption measurements.

引用

页码：457 / 462

页数：6

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