Synthesis of a Polymerizable Fluorosurfactant for the Construction of Stable Nanostructured Proton-Conducting Membranes
作者:Mohan N. Wadekar、Wolter F. Jager、Ernst J. R. Sudhölter、Stephen J. Picken
DOI:10.1021/jo101196w
日期:2010.10.15
related fluorocarbon compounds is described. Compound 1 is synthesized using a copper-mediated cross-coupling reaction of 4-bromobenzaldehyde and sodium 5-iodooctafluoro-3-oxapentanesulfonate. The resulting benzaldehyde is converted to a styrene unit using a Wittigreaction with methyltriphenylphosphonium bromide in acetonitrile, using DBU as a base. This strategy for converting an iodo-functionalized
[60]fulleropyrrolidine derivatives containing perfluoroalkyl chains of different lengths linked to a phenyl group through a pyrrolidine ring have been successfully designed and synthesized. These compounds exhibited field-effect electron mobility with values ranging from 10−3 to 10−2 cm2V−1s−1 depending on the length of the alkyl chain at the N-1 position of the pyrrolidine ring and perfluoroalkyl chain. A device
已成功设计并合成了一系列[60]富勒吡咯烷衍生物,这些衍生物包含通过吡咯烷环与苯基连接的不同长度的全氟烷基链。这些化合物表现出场效应电子迁移率,其值在10 -3到10 -2 cm 2 V -1 s -1之间,具体取决于N处烷基链的长度吡咯烷环和全氟烷基链的-1位。在环境条件下也进行了器件操作研究,结果表明氟烷基链有效地诱导了FET器件的空气耐久性。因此,我们的结果表明,对于可溶液加工的n通道OFET材料,可以选择短的全氟烷基作为[60]富勒烯的替代取代基。
Buckminsterfullerene derivatives bearing a fluoroalkyl group for use in organic photovoltaic cells
Six novel fluoroalkylpyrrolidine-substituted [60]fullerene derivatives were synthesized and their ability to perform as new n-type organic photovoltaic materials was evaluated. The fullerene derivatives were soluble in common organic solvents, affording good processability properties for the fabrication of photovoltaic cells, and showed an absorption range and molar extinctions similar to those of 16,6]-phenyl C-61 butyric acid methyl ester. Bulk-heterojunction photovoltaic cells using poly(3-hexylthiophene):fullerene derivative blends as the photovoltaic active layers were fabricated and characterized. The performances of the photovoltaic cells were notably affected by the substituents on the fullerene derivatives. Short fluoroalkyl (C4F9) chains on pyrrolidine-linked phenyl groups were suitable substituents for the photovoltaic materials in the current study. This fullerene derivative bearing a C4F9-phenyl group showed a moderate power conversion efficiency of 0.53% during simulated AM 1.5 G solar irradiation at 100 mW/cm(2). This is so far the first report of the use of fluoroalkyl fullerene derivatives as the active materials in organic photovoltaic cells. (C) 2012 Elsevier B.V. All rights reserved.