Formation of unusual microphase-separated ultrathin films of poly(vinyl catechol-: Block -styrene) (PVCa- b -PSt) at the air-water interface by solution casting onto water

Hiroshi Yabu; Shusaku Nagano

doi:10.1039/c7ra06574d

Formation of unusual microphase-separated ultrathin films of poly(vinyl catechol-: Block -styrene) (PVCa- b -PSt) at the air-water interface by solution casting onto water

Hiroshi Yabu, Shusaku Nagano

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

This report describes the preparation of ultrathin films possessing unusual fingerprint-like morphologies for poly(vinyl catechol-block-styrene) (PVCa-b-PSt) at the air-water interface by simply mixing a solution into water followed by solvent evaporation. Structural analysis and comparison with typical surface micelles of amphiphilic diblock copolymers indicated that precipitation and micelle aggregation played a significant role in the formation and unusual microphase separation of PVCa-b-PSt ultrathin films. In addition, the interior structures of the ultrathin films could be adjusted by adding homo-polystyrene (hPSt). Silver nanoparticle arrays were formed by immersing ultrathin films in aqueous AgNO₃ and a microphase-separated structure in the ultrathin films could act as a template for the arrays.

Original language	English
Pages (from-to)	33086-33090
Number of pages	5
Journal	RSC Advances
Volume	7
Issue number	53
DOIs	https://doi.org/10.1039/c7ra06574d
Publication status	Published - 2017

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1039/c7ra06574d

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title = "Formation of unusual microphase-separated ultrathin films of poly(vinyl catechol-: Block -styrene) (PVCa- b -PSt) at the air-water interface by solution casting onto water",

abstract = "This report describes the preparation of ultrathin films possessing unusual fingerprint-like morphologies for poly(vinyl catechol-block-styrene) (PVCa-b-PSt) at the air-water interface by simply mixing a solution into water followed by solvent evaporation. Structural analysis and comparison with typical surface micelles of amphiphilic diblock copolymers indicated that precipitation and micelle aggregation played a significant role in the formation and unusual microphase separation of PVCa-b-PSt ultrathin films. In addition, the interior structures of the ultrathin films could be adjusted by adding homo-polystyrene (hPSt). Silver nanoparticle arrays were formed by immersing ultrathin films in aqueous AgNO3 and a microphase-separated structure in the ultrathin films could act as a template for the arrays.",

author = "Hiroshi Yabu and Shusaku Nagano",

note = "Funding Information: This work was partially supported by JSPS KAKENHI (No. 17H01223 and 16K14071) and Nanotechnology Platform Program (Nagoya University, Molecule and Material Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. H. Y. would like to thank Ms. Minori Suzuki, WPI-AIMR, Tohoku University, for the TEM observations. H. Y. also would like to thank Dr Y. Saito and Mr H. Ohshima, Graduate School of Engineering, Tohoku University for helping the synthesis of copolymers.",

year = "2017",

doi = "10.1039/c7ra06574d",

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publisher = "Royal Society of Chemistry",

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AU - Yabu, Hiroshi

AU - Nagano, Shusaku

N1 - Funding Information: This work was partially supported by JSPS KAKENHI (No. 17H01223 and 16K14071) and Nanotechnology Platform Program (Nagoya University, Molecule and Material Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. H. Y. would like to thank Ms. Minori Suzuki, WPI-AIMR, Tohoku University, for the TEM observations. H. Y. also would like to thank Dr Y. Saito and Mr H. Ohshima, Graduate School of Engineering, Tohoku University for helping the synthesis of copolymers.

PY - 2017

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AB - This report describes the preparation of ultrathin films possessing unusual fingerprint-like morphologies for poly(vinyl catechol-block-styrene) (PVCa-b-PSt) at the air-water interface by simply mixing a solution into water followed by solvent evaporation. Structural analysis and comparison with typical surface micelles of amphiphilic diblock copolymers indicated that precipitation and micelle aggregation played a significant role in the formation and unusual microphase separation of PVCa-b-PSt ultrathin films. In addition, the interior structures of the ultrathin films could be adjusted by adding homo-polystyrene (hPSt). Silver nanoparticle arrays were formed by immersing ultrathin films in aqueous AgNO3 and a microphase-separated structure in the ultrathin films could act as a template for the arrays.

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