Using block copolymer architecture to achieve sub-10 nm periods | |
Sun, Zhiwei1; Zhang, Wenxu1; Hong, Song2; Chen, Zhenbin3; Liu, Xiaohui1; Xiao, Shuaigang4; Coughlin, E. Bryan1; Russell, Thomas P.1,5,6 | |
刊名 | POLYMER
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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. |
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