期刊
CHEMISTRY OF MATERIALS
卷 27, 期 7, 页码 2299-2308出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.5b00268
关键词
-
资金
- University of Tuebingen [twinning project, within the frame of Organische Photovoltaik & Farbstoffsolarzellen of the Baden-Wuerttemberg Stiftung]
- Bavarian State Government [20-3043.5]
The photodegradation of the low band gap polymer poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT) during irradiation under white light (AM 1.5 conditions) has been studied in pristine polymer films as well as in blend films with [6,6]-phenyl C-61 butyric acid methyl ester (PC[(60)]BM). In order to gain insight into the degradation process, FTIR spectroscopy has been used to follow the evolution of different subunits of the polymer and to probe the chemical product formation. In contrast to other polymers, not the alkyl side chains but the pi-conjugated system is preferentially oxidized during the first stages of degradation. Furthermore, it has been shown that the subunits of the polymer backbone are differently affected by the degradation. Blending the polymer with PC[60]BM leads to a significantly larger impact on the stability of the cyclopentadiene group compared to the benzene ring of the benzothiadiazole group.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据