Extended-chain lamellar crystals of monodisperse polyfluorenes

	Extended-chain lamellar crystals of monodisperse polyfluorenes
	Liu CF ; Wang QL ; Tian HK ; Geng YH ; Yan DH
刊名	polymer
	2013
卷号	54 期号:9 页码:2459-2465
关键词	FIELD-EFFECT TRANSISTORS THIN-FILM TRANSISTORS SINGLE-CRYSTALS SOLVENT EVAPORATION CONJUGATED POLYMERS MOLECULAR PACKING SOLAR-CELLS MORPHOLOGY CRYSTALLIZATION POLY(3-HEXYLTHIOPHENE)
ISSN号	0032-3861
通讯作者	yan dh
中文摘要	polymer single crystals of monodisperse poly (9,9-dioctylfluorene)s (pfos) with actual molecular weights of 6220, 12,437 and 24,874 da corresponding to the numbers of fluorene repeating units of 16, 32 and 64, respectively, were grown from chloroform/ethanol solutions. in the single crystals, polymer chains adopt lamellar packing motif. the crystal structure determined by electron diffraction is identical for all three pfos, and the single crystal has an orthorhombic unit cell with lattice parameters of a = 2.16 nm, b = 1.28 nm, and c = 336 nm. in these lamellar crystals, pfo backbones are arranged perpendicular to the lamellar surface and alkyl side chains are along the crystal-growth direction. the lamellar thickness is identical to the extended chain length of the corresponding polymer as demonstrated by atomic force microscopy (afm) measurements. it is noteworthy to point out that f64 still maintain extended-chain packing habit even when the chain length is as long as 53 nm. therefore, our results demonstrated that chains remain extended in this system. (c) 2013 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000317632900032
公开日期	2014-04-16
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49901]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Liu CF,Wang QL,Tian HK,et al. Extended-chain lamellar crystals of monodisperse polyfluorenes[J]. polymer,2013,54(9):2459-2465.
APA	Liu CF,Wang QL,Tian HK,Geng YH,&Yan DH.(2013).Extended-chain lamellar crystals of monodisperse polyfluorenes.polymer,54(9),2459-2465.
MLA	Liu CF,et al."Extended-chain lamellar crystals of monodisperse polyfluorenes".polymer 54.9(2013):2459-2465.