Control of the area density of vertically grown ZnO nanowires by blending PS-b-P4VP and PS-b-PAA copolymer micelles

Wonseok Hwang; Ji Hyuk Choi; Tae Hee Kim; Jinwoo Sung; Jae Min Myoung; Dae Geun Choi; Byeong Hyeok Sohn; Sang Soo Lee; Dong Ha Kim; Cheolmin Park

doi:10.1021/cm800719h

Control of the area density of vertically grown ZnO nanowires by blending PS-b-P4VP and PS-b-PAA copolymer micelles

Wonseok Hwang, Ji Hyuk Choi, Tae Hee Kim, Jinwoo Sung, Jae Min Myoung, Dae Geun Choi, Byeong Hyeok Sohn, Sang Soo Lee, Dong Ha Kim, Cheolmin Park

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

22 Citations (Scopus)

Abstract

We develop a novel and simple method for controlling the area density of ZnO nanowires vertically grown on a Si substrate. The method is based on blending spherical polystyrene-block-poly(acrylic acid) (PS-b-PAA) micelles with polystyrene-block-poly 4-vinylpyridine (PS-b-P4VP) for the area density control of Au nanoparticles, a catalyst of ZnO nanowires, chemically reduced from hydrogen tetrachloroaurate (HAuCl₄) selectively in P4VP core block. No interdiffusion between the two types of block copolymer micelles allows us to fabricate the monolayer of the mixed micelles with the controlled density of Au nanoparticles from which single crystal ZnO nanowires are grown by the VLS method. The number of ZnO nanowires per unit area varies from approximately 15-120 μm^-2 with a tuning capability of more than 800%. Micropatterns with the controlled density of Au nanoparticles are also fabricated by selective pattern transfer of blended micelles.

Original language	English
Pages (from-to)	6041-6047
Number of pages	7
Journal	Chemistry of Materials
Volume	20
Issue number	19
DOIs	https://doi.org/10.1021/cm800719h
Publication status	Published - 2008 Oct 14

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm800719h

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title = "Control of the area density of vertically grown ZnO nanowires by blending PS-b-P4VP and PS-b-PAA copolymer micelles",

abstract = "We develop a novel and simple method for controlling the area density of ZnO nanowires vertically grown on a Si substrate. The method is based on blending spherical polystyrene-block-poly(acrylic acid) (PS-b-PAA) micelles with polystyrene-block-poly 4-vinylpyridine (PS-b-P4VP) for the area density control of Au nanoparticles, a catalyst of ZnO nanowires, chemically reduced from hydrogen tetrachloroaurate (HAuCl4) selectively in P4VP core block. No interdiffusion between the two types of block copolymer micelles allows us to fabricate the monolayer of the mixed micelles with the controlled density of Au nanoparticles from which single crystal ZnO nanowires are grown by the VLS method. The number of ZnO nanowires per unit area varies from approximately 15-120 μm-2 with a tuning capability of more than 800%. Micropatterns with the controlled density of Au nanoparticles are also fabricated by selective pattern transfer of blended micelles.",

author = "Wonseok Hwang and Choi, {Ji Hyuk} and Kim, {Tae Hee} and Jinwoo Sung and Myoung, {Jae Min} and Choi, {Dae Geun} and Sohn, {Byeong Hyeok} and Lee, {Sang Soo} and Kim, {Dong Ha} and Cheolmin Park",

year = "2008",

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doi = "10.1021/cm800719h",

language = "English",

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AU - Hwang, Wonseok

AU - Choi, Ji Hyuk

AU - Kim, Tae Hee

AU - Sung, Jinwoo

AU - Myoung, Jae Min

AU - Choi, Dae Geun

AU - Sohn, Byeong Hyeok

AU - Lee, Sang Soo

AU - Kim, Dong Ha

AU - Park, Cheolmin

PY - 2008/10/14

Y1 - 2008/10/14

N2 - We develop a novel and simple method for controlling the area density of ZnO nanowires vertically grown on a Si substrate. The method is based on blending spherical polystyrene-block-poly(acrylic acid) (PS-b-PAA) micelles with polystyrene-block-poly 4-vinylpyridine (PS-b-P4VP) for the area density control of Au nanoparticles, a catalyst of ZnO nanowires, chemically reduced from hydrogen tetrachloroaurate (HAuCl4) selectively in P4VP core block. No interdiffusion between the two types of block copolymer micelles allows us to fabricate the monolayer of the mixed micelles with the controlled density of Au nanoparticles from which single crystal ZnO nanowires are grown by the VLS method. The number of ZnO nanowires per unit area varies from approximately 15-120 μm-2 with a tuning capability of more than 800%. Micropatterns with the controlled density of Au nanoparticles are also fabricated by selective pattern transfer of blended micelles.

AB - We develop a novel and simple method for controlling the area density of ZnO nanowires vertically grown on a Si substrate. The method is based on blending spherical polystyrene-block-poly(acrylic acid) (PS-b-PAA) micelles with polystyrene-block-poly 4-vinylpyridine (PS-b-P4VP) for the area density control of Au nanoparticles, a catalyst of ZnO nanowires, chemically reduced from hydrogen tetrachloroaurate (HAuCl4) selectively in P4VP core block. No interdiffusion between the two types of block copolymer micelles allows us to fabricate the monolayer of the mixed micelles with the controlled density of Au nanoparticles from which single crystal ZnO nanowires are grown by the VLS method. The number of ZnO nanowires per unit area varies from approximately 15-120 μm-2 with a tuning capability of more than 800%. Micropatterns with the controlled density of Au nanoparticles are also fabricated by selective pattern transfer of blended micelles.

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Control of the area density of vertically grown ZnO nanowires by blending PS-b-P4VP and PS-b-PAA copolymer micelles

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ASJC Scopus subject areas

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