期刊
POLYMER
卷 217, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2021.123462
关键词
Block copolymer; Microphase separation; Silver array; Thiol-yne reaction
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2018R1A5A1025208]
- Ministry of Science and ICT of Korea
- POSTECH
In this study, a functional block copolymer PMATA-b-PS was synthesized and used as a template for patterning Ag nanoarrays. The experiment successfully demonstrated the fabrication of Ag nanoparticle arrays through selective association with PMATA cylinders and removal of the organic polymer layer.
We report the synthesis of thiopropionic acid-functionalized polymethacrylate-b-polystyrene (PMATA-b-PS) as a template for patterning Ag nanoarrays. Reversible addition-fragmentation chain transfer (RAFT) polymerization of silyl-protected propagyl methacrylate followed by chain extension with styrene produced a block copolymer precursor. Deprotection of the trimethylsilyl group and subsequent thiol-yne reaction afforded the target, PMATA-b-PS. While the entire series of the precursor was in the disordered phase, microphase separated morphologies were identified from PMATA-b-PS, indicating an increased interaction parameter (chi) as a result of introducing the acid groups. As a preliminary result, we show that an Ag nanoparticle array can be fabricated by selectively associating Ag+ ions to the PMATA cylinders in the thin film of PMATA-b-PS and removing the organic polymer layer by oxygen plasma treatment.
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