Using well-defined EOnMAm diblock amphiphilic copolymers as templates for synthesis of mesoporous silicas with different mesostructures

Yi Tsu Chan; Hong Ping Lin; Chung Yuan Mou; Shiuh Tzung Liu

doi:10.1016/j.micromeso.2009.04.019

Using well-defined EO_nMA_m diblock amphiphilic copolymers as templates for synthesis of mesoporous silicas with different mesostructures

Yi Tsu Chan, Hong Ping Lin, Chung Yuan Mou, Shiuh Tzung Liu

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

11 Citations (Scopus)

Abstract

Highly ordered mesoporous silicas with large accessible pores have been prepared by using pre-synthesized poly(ethylene oxide)-b-poly(methyl acrlyate) (EO_nMA_m) diblock copolymers as templates. Via adjusting the chain length of EO versus that of MA, a series of silica mesostructures, including two-dimensional (2-D) hexagonal, 3-D bicontinuous (Ia3d), and body-centered cubic (Im3m) symmetries, were prepared with the use of tetraethyl-orthosilicate (TEOS) as the silica precursor under acidic conditions. The mesostructures of all materials were characterized by small-angle X-ray scattering and transmission electron microscopy measurements. N₂ adsorption-desorption isotherms reveal that the pore size ranges from 4 to 30 nm with a narrow pore-size distribution and its dimension is proportional to the chain length of MA units.

Original language	English
Pages (from-to)	331-337
Number of pages	7
Journal	Microporous and Mesoporous Materials
Volume	123
Issue number	1-3
DOIs	https://doi.org/10.1016/j.micromeso.2009.04.019
Publication status	Published - Jul 1 2009
Externally published	Yes

Keywords

Amphiphilic polymer
Diblock copolymer
Mesoporous silica
Mesostructure

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials

Access to Document

10.1016/j.micromeso.2009.04.019

Cite this

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title = "Using well-defined EOnMAm diblock amphiphilic copolymers as templates for synthesis of mesoporous silicas with different mesostructures",

abstract = "Highly ordered mesoporous silicas with large accessible pores have been prepared by using pre-synthesized poly(ethylene oxide)-b-poly(methyl acrlyate) (EOnMAm) diblock copolymers as templates. Via adjusting the chain length of EO versus that of MA, a series of silica mesostructures, including two-dimensional (2-D) hexagonal, 3-D bicontinuous (Ia3d), and body-centered cubic (Im3m) symmetries, were prepared with the use of tetraethyl-orthosilicate (TEOS) as the silica precursor under acidic conditions. The mesostructures of all materials were characterized by small-angle X-ray scattering and transmission electron microscopy measurements. N2 adsorption-desorption isotherms reveal that the pore size ranges from 4 to 30 nm with a narrow pore-size distribution and its dimension is proportional to the chain length of MA units.",

keywords = "Amphiphilic polymer, Diblock copolymer, Mesoporous silica, Mesostructure",

author = "Chan, {Yi Tsu} and Lin, {Hong Ping} and Mou, {Chung Yuan} and Liu, {Shiuh Tzung}",

note = "Funding Information: This work was supported by National Science Council, Taiwan, ROC for the financial support. Appendix A ",

year = "2009",

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doi = "10.1016/j.micromeso.2009.04.019",

language = "English",

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journal = "Microporous and Mesoporous Materials",

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T1 - Using well-defined EOnMAm diblock amphiphilic copolymers as templates for synthesis of mesoporous silicas with different mesostructures

AU - Chan, Yi Tsu

AU - Lin, Hong Ping

AU - Mou, Chung Yuan

AU - Liu, Shiuh Tzung

N1 - Funding Information: This work was supported by National Science Council, Taiwan, ROC for the financial support. Appendix A

PY - 2009/7/1

Y1 - 2009/7/1

N2 - Highly ordered mesoporous silicas with large accessible pores have been prepared by using pre-synthesized poly(ethylene oxide)-b-poly(methyl acrlyate) (EOnMAm) diblock copolymers as templates. Via adjusting the chain length of EO versus that of MA, a series of silica mesostructures, including two-dimensional (2-D) hexagonal, 3-D bicontinuous (Ia3d), and body-centered cubic (Im3m) symmetries, were prepared with the use of tetraethyl-orthosilicate (TEOS) as the silica precursor under acidic conditions. The mesostructures of all materials were characterized by small-angle X-ray scattering and transmission electron microscopy measurements. N2 adsorption-desorption isotherms reveal that the pore size ranges from 4 to 30 nm with a narrow pore-size distribution and its dimension is proportional to the chain length of MA units.

AB - Highly ordered mesoporous silicas with large accessible pores have been prepared by using pre-synthesized poly(ethylene oxide)-b-poly(methyl acrlyate) (EOnMAm) diblock copolymers as templates. Via adjusting the chain length of EO versus that of MA, a series of silica mesostructures, including two-dimensional (2-D) hexagonal, 3-D bicontinuous (Ia3d), and body-centered cubic (Im3m) symmetries, were prepared with the use of tetraethyl-orthosilicate (TEOS) as the silica precursor under acidic conditions. The mesostructures of all materials were characterized by small-angle X-ray scattering and transmission electron microscopy measurements. N2 adsorption-desorption isotherms reveal that the pore size ranges from 4 to 30 nm with a narrow pore-size distribution and its dimension is proportional to the chain length of MA units.

KW - Amphiphilic polymer

KW - Diblock copolymer

KW - Mesoporous silica

KW - Mesostructure

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