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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Bimodal mesoporous silica with bottleneck pores
Authors: Reber, Michael
Brühwiler, Dominik
DOI: 10.21256/zhaw-1172
Published in: Dalton Transactions
Volume(Issue): 44
Issue: 41
Page(s): 17960
Pages to: 17967
Issue Date: 2015
Publisher / Ed. Institution: Royal Society of Chemistry
ISSN: 1477-9226
Language: English
Subject (DDC): 540: Chemistry
Abstract: Bimodal mesoporous silica consisting of two sets of well-defined mesopores is synthesized by a partial pseudomorphic transformation of an ordered mesoporous starting material (SBA-15 type). The introduction of a second set of smaller mesopores (MCM-41 type) establishes a pore system with bottlenecks that restricts the access to the core of the bimodal mesoporous silica particles. The particle size and shape of the starting material are retained, but micropores present in the starting material disappear during the transformation, leading to a true bimodal mesoporous product. A varying degree of transformation allows the adjustment of the pore volume contribution of the two mesopore domains. Information on the accessibility of the mesopores is obtained by the adsorption of fluorescence-labeled poly(amidoamine) dendrimers and imaging by confocal laser scanning microscopy. This information is correlated with nitrogen sorption data to provide insights regarding the spatial distribution of the two mesopore domains. The bimodal mesoporous materials are excellent model systems for the investigation of cavitation effects in nitrogen desorption isotherms.
Fulltext version: Accepted version
License (according to publishing contract): Licence according to publishing contract
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Published as part of the ZHAW project: Molecular Alignment Chips (MACs)
Appears in collections:Publikationen Life Sciences und Facility Management

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Reber, M., & Brühwiler, D. (2015). Bimodal mesoporous silica with bottleneck pores. Dalton Transactions, 44(41), 17960–17967.
Reber, M. and Brühwiler, D. (2015) ‘Bimodal mesoporous silica with bottleneck pores’, Dalton Transactions, 44(41), pp. 17960–17967. Available at:
M. Reber and D. Brühwiler, “Bimodal mesoporous silica with bottleneck pores,” Dalton Transactions, vol. 44, no. 41, pp. 17960–17967, 2015, doi: 10.21256/zhaw-1172.
REBER, Michael und Dominik BRÜHWILER, 2015. Bimodal mesoporous silica with bottleneck pores. Dalton Transactions. 2015. Bd. 44, Nr. 41, S. 17960–17967. DOI 10.21256/zhaw-1172
Reber, Michael, and Dominik Brühwiler. 2015. “Bimodal Mesoporous Silica with Bottleneck Pores.” Dalton Transactions 44 (41): 17960–67.
Reber, Michael, and Dominik Brühwiler. “Bimodal Mesoporous Silica with Bottleneck Pores.” Dalton Transactions, vol. 44, no. 41, 2015, pp. 17960–67,

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