期刊
SMALL
卷 8, 期 12, 页码 1920-1927出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201102382
关键词
fullerenes; miscibility; polymers; thin films; X-ray spectromicroscopy
类别
资金
- EPSRC in the UK [EP/E051804/1, EP/G068356/1]
- ARC in Australia [FT100100275]
- DOE [DE-FG02-98ER45737]
- BMBF [05KS7WE1]
- EPSRC [EP/E051804/1, EP/G068356/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G068356/1, EP/E051804/1] Funding Source: researchfish
- Australian Research Council [FT100100275] Funding Source: Australian Research Council
Films of the fullerene derivatives [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) are patterned on silicon nitride membranes using photolithography to study, with X-ray spectromicroscopy, the lateral, solid-state diffusion of fullerene derivatives into conjugated polymer films. After patterning of the fullerene film, a film of conjugated polymer is laminated on top and the structure is annealed in order to study lateral intermixing and facilitate measurement of fullerene miscibility. Lateral intermixing of polymer and fullerene readily occurs for poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT) and regiorandom poly(3-hexylthiophene) (RRa-P3HT). A 42 wt.% miscibility of PC61BM in PBTTT is measured, while miscibilities of 20 and 41 wt.% are measured for PC61BM and PC71BM, respectively, in RRa-P3HT, thereby demonstrating a significant difference in the miscibilities of these two fullerene derivatives. For regioregular poly(3-hexylthiophene) (RR-P3HT), incomplete lateral intermixing of fullerene and RR-P3HT is observed with PCBM crystallite formation competing with the lateral diffusion of PCBM molecules into the polymer film.
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