Controlling photo-oxidation processes of a polyfluorene derivative: The effect of additives and mechanism

被引：6
|
作者：
Ferreira, G. R. [1 ]
Nowacki, B. [2 ]
Magalhaes, A. [3 ]
deAzevedo, E. R. [4 ]
de Sa, E. L. [5 ]
Akcelrud, L. C. [2 ]
Bianchi, R. F. [1 ]
机构：
[1] Lab Polymers & Elect Properties Mat UFOP, Ouro Preto, MG, Brazil
[2] Paulo Scarpa Polymer Lab UFPR, Curitiba, Parana, Brazil
[3] Univ Estadual Campinas, Inst Quim, UNICAMP, Campinas, SP, Brazil
[4] Univ Sao Paulo, USP, Inst Fis Sao Carlos, Sao Carlos, SP, Brazil
[5] Univ Fed Parana, Dept Chem, BR-80060000 Curitiba, Parana, Brazil
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2014年 / 146卷 / 03期
基金：
巴西圣保罗研究基金会;
关键词：
Optical properties; Oxidation; Radiation damage; Electronic materials; LIGHT; PHOTODEGRADATION; DEGRADATION; OXIDATION; EMISSION;
D O I：
10.1016/j.matchemphys.2014.02.037
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The control of the photo degradation of a fluorene-vinylene-phenylene based-polymer, poly(9,9-di-hexylfluorenediylvinylene-alt-1,4-phenylenevinylene) (LaPPS16) was achieved by addition of a radical scavenger (RS) (enhancing photo resistance) or a radical initiator (RI) (reducing photo resistance). Photoluminescence, UV-Vis absorption, H-1 NMR spectroscopies and gel permeation chromatography (GPC) revealed that the incorporating small amounts of RS or RI is an efficient way to control the rates of the photo-oxidation reactions, and thus to obtain the conjugated polymer with foreseeable degradation rates for applications in blue-light sensitive detectors for neonatal phototherapy. (C) 2014 Elsevier B.V. All rights reserved.
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页码：212 / 217
页数：6
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