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Increasing the diameter of vertically aligned, hexagonally ordered pores in mesoporous silica thin films
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Mohamed, Nabil A. N., Han, Yisong, Hector, Andrew L., Houghton, Anthony R., Hunter-Sellars, Elwin, Reid, Gillian, Williams, Daryl R. and Zhang, Wenjian (2022) Increasing the diameter of vertically aligned, hexagonally ordered pores in mesoporous silica thin films. Langmuir, 38 (7). pp. 2257-2266. doi:10.1021/acs.langmuir.1c02854 ISSN 1520-5827.
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Official URL: https://doi.org/10.1021/acs.langmuir.1c02854
Abstract
The variation in pore size in mesoporous films produced by electrochemically assisted self-assembly (EASA) with the surfactant chain length is described. EASA produces a hexagonal array of pores perpendicular to the substrate surface by using an applied potential to organize cationic surfactants and the resultant current to drive condensation in a silica sol. Here, we show that a range of pore sizes between 2 and 5 nm in diameter is available with surfactants of the form [Me3NCnH2n+1]Br, with alkyl chain lengths between C14 and C24. The film quality, pore order, pore size, and pore accessibility are probed with a range of techniques.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
SWORD Depositor: | Library Publications Router | ||||||||||||
Library of Congress Subject Headings (LCSH): | Mesoporous materials, Thin films, Silica, Self-assembly (Chemistry), Electrochemistry, Surface active agents | ||||||||||||
Journal or Publication Title: | Langmuir | ||||||||||||
Publisher: | American Chemical Society (ACS) | ||||||||||||
ISSN: | 1520-5827 | ||||||||||||
Official Date: | 22 February 2022 | ||||||||||||
Dates: |
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Volume: | 38 | ||||||||||||
Number: | 7 | ||||||||||||
Page Range: | pp. 2257-2266 | ||||||||||||
DOI: | 10.1021/acs.langmuir.1c02854 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Copyright Holders: | Copyright © 2022 American Chemical Society | ||||||||||||
Date of first compliant deposit: | 14 February 2023 | ||||||||||||
Date of first compliant Open Access: | 14 February 2023 | ||||||||||||
RIOXX Funder/Project Grant: |
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