標題: Morphology control of three-dimensional nanostructures in porous templates using lamella-forming block copolymers and solvent vapors
作者: Cheng, Ming-Hsiang
Ko, Hao-Wen
Chung, Pei-Yun
Chang, Chun-Wei
Chen, Jiun-Tai
應用化學系
Department of Applied Chemistry
公開日期: 2016
摘要: The microphase separation behavior of block copolymers confined in cylindrical nanopores has been extensively investigated. Recently, the solvent-annealing-induced nanowetting in templates (SAINT) method has been demonstrated to be a versatile approach for the infiltration of block copolymers into the nanopores of porous templates. The function of the annealing solvents, however, is still not well understood, especially in the morphology control of the fabricated block copolymer nanostructures. In this work, we elucidate the function of the annealing solvents in the SAINT method using a lamella-forming block copolymer, polystyrene-block-polydimethyl-siloxane (PS-b-PDMS), and anodic aluminum oxide (AAO) templates. By changing the composition of the annealing solvents, different morphologies such as the concentric lamellarmorphology, the winding cylinder morphology, and the irregular hybrid morphology are observed, mainly caused by the annealing-solvent-induced volume change. The morphology of the block copolymer nanostructures can be further confirmed using an HF solution to remove the PDMS domain selectively.
URI: http://dx.doi.org/10.1039/c6sm01157h
http://hdl.handle.net/11536/132704
ISSN: 1744-683X
DOI: 10.1039/c6sm01157h
期刊: SOFT MATTER
Volume: 12
Issue: 39
起始頁: 8087
結束頁: 8092
Appears in Collections:Articles