Directed Assembly of Non-equilibrium ABA Triblock Copolymer Morphologies on Nanopatterned Substrates
文献类型：期刊论文
| 作者 | Ji SX ; Nagpal U ; Liu GL ; Delcambre SP ; Muller M ; de Pablo JJ ; Nealey PF |
| 刊名 | acs nano
 |
| 出版日期 | 2012 |
| 卷号 | 6期号:6页码:5440-5448 |
| 关键词 | DEVICE-ORIENTED STRUCTURES ORDER-DISORDER TRANSITION BIT-PATTERNED MEDIA BLOCK-COPOLYMER THIN-FILMS DENSITY MULTIPLICATION MICROPHASE-SEPARATION HOMOPOLYMER BLENDS MULTIBLOCK COPOLYMERS GENERALIZED-APPROACH |
| ISSN号 | 1936-0851 |
| 通讯作者 | ji sx |
| 中文摘要 | the majority of past work on directed assembly of block copolymers on chemically nanopatterned surfaces (or chemical patterns) has focused on ab diblock copolymers, and the resulting morphologies have generally corresponded to equilibrium states. here we report a study on directed assembly of aba triblock copolymers. directed assembly of thin films of symmetric poly(methyl methacrylate-b-styrene-b-methyl methacrylate) (pmma-b-ps-b-pmma) triblock copolymers is shown to be capable of achieving a high degree of perfection, registration, and accuracy on striped patterns having periods, l-s,l- commensurate with the bulk period of the copolymer, l-o. when l-s is incommensurate with l-o, the triblock copolymer domains can reach dimensions up to 55% larger or 13% smaller than l-o. the range over which triblock copolymers tolerate departures from a commensurate l-s is significantly larger than that accessible with the corresponding diblock copolymer material on analogous directed assembly systems. the assembly kinetics of the triblock copolymer is approximately 3 orders of magnitude slower than observed in the diblock system. theoretically informed simulations are used to interpret our experimental observations; a thermodynamic analysis reveals that triblocks can form highly ordered, non-equilibrium metastable structures that do not arise in the diblock. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000305661300097 |
| 公开日期 | 2013-05-20 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/48109]  |
| 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 | Ji SX,Nagpal U,Liu GL,et al. Directed Assembly of Non-equilibrium ABA Triblock Copolymer Morphologies on Nanopatterned Substrates[J]. acs nano,2012,6(6):5440-5448. |
| APA | Ji SX.,Nagpal U.,Liu GL.,Delcambre SP.,Muller M.,...&Nealey PF.(2012).Directed Assembly of Non-equilibrium ABA Triblock Copolymer Morphologies on Nanopatterned Substrates.acs nano,6(6),5440-5448. |
| MLA | Ji SX,et al."Directed Assembly of Non-equilibrium ABA Triblock Copolymer Morphologies on Nanopatterned Substrates".acs nano 6.6(2012):5440-5448. |
入库方式： OAI收割
来源：长春应用化学研究所
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