Using block copolymer architecture to achieve sub-10 nm periods

doi:10.1016/j.polymer.2017.06.007

	Using block copolymer architecture to achieve sub-10 nm periods
	Sun, Zhiwei 1; Zhang, Wenxu 1; Hong, Song 2; Chen, Zhenbin 3; Liu, Xiaohui 1; Xiao, Shuaigang 4; Coughlin, E. Bryan 1; Russell, Thomas P.1,5,6
刊名	POLYMER
	2017-07-14
卷号	121 页码:297-303
关键词	Order-to-disorder transition Polymer chain architecture Entropy Salt doping Star copolymer
ISSN号	0032-3861
DOI	10.1016/j.polymer.2017.06.007
英文摘要	Using salt-doped polystyrene-b-poly(2-vinylpyridine) star shaped block copolymer as a model, we show that the architecture of (A-b-B)(n) type multi-arm star block copolymers enhances the ordering of the block copolymers, enabling the generation of nanostructures with microdomain periods less than 10 nm. The influence of the arm number on the order-to-disorder transition temperature and molecular weight was systematically studied using small angle X-ray scattering. The configurational constraints placed on the chains by anchoring each block copolymer to a central junction point have a significant effect on the disorder-to-order transition behavior. In addition to an increase in the Flory-Huggins parameter (chi), block copolymers with multi-arm star shape chain architecture have a critical segregation strength (chi N) C that decreases with arm number, opening a simple route to generate ordered nanostructures with periods below 10 nm. (C) 2017 Elsevier Ltd. All rights reserved.
WOS研究方向	Polymer Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000405747100032
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33190]
专题	材料科学与工程学院
作者单位	1.Univ Massachusetts Amherst, Dept Polymer Sci & Engn, 120 Governors Dr, Amherst, MA 01003 USA; 2.Beijing Univ Chem Technol, Ctr Instrumental Anal, 15 North 3rd Ring East, Beijing 100029, Peoples R China; 3.Lanzhou Univ Technol, Coll Mat Sci & Engn, 287 Langongping St, Lanzhou 730050, Gansu, Peoples R China; 4.Seagate Technol, 47010 Kato Rd, Fremont, CA 94538 USA; 5.Lawrence Berkeley Natl Lab, Div Mat Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA; 6.Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Sun, Zhiwei,Zhang, Wenxu,Hong, Song,et al. Using block copolymer architecture to achieve sub-10 nm periods[J]. POLYMER,2017,121:297-303.
APA	Sun, Zhiwei.,Zhang, Wenxu.,Hong, Song.,Chen, Zhenbin.,Liu, Xiaohui.,...&Russell, Thomas P..(2017).Using block copolymer architecture to achieve sub-10 nm periods.POLYMER,121,297-303.
MLA	Sun, Zhiwei,et al."Using block copolymer architecture to achieve sub-10 nm periods".POLYMER 121(2017):297-303.