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dc.contributor.authorRitter, Hanna-
dc.contributor.authorBrühwiler, Dominik-
dc.date.accessioned2018-02-06T15:22:26Z-
dc.date.available2018-02-06T15:22:26Z-
dc.date.issued2009-
dc.identifier.issn1932-7447de_CH
dc.identifier.issn1932-7455de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/2650-
dc.description.abstractThe accessibility of amino groups in postsynthetically functionalized mesoporous silica MCM-41, MCM-48, and SBA-15 is investigated by reaction with fluorescein isothiocyanate (FITC). The quantitative analysis of the surface-grafted amino groups in relation to the amount of coupled FITC over a wide range of loadings affords information about potential pore blocking. In the pore diameter domain of 3-4 nm, the actual pore size of materials with a one-dimensional channel system (MCM-41) strongly affects the FITC coupling yield and the distribution of the anchored fluorescein moieties. In the case of SBA-15 (7.6 nm pore diameter), the accessibility of the grafted amino groups is similar to what is expected for a material with a completely open surface. However, grafting in the intrawall micropores of SBA-15 leads to a substantial fraction of inaccessible amino groups. As a direct consequence of short channel lengths and large external surface area, excellent accessibility is also observed for nanometer-sized MCM-41 (3.2 nm pore diameter).de_CH
dc.language.isoende_CH
dc.publisherAmerican Chemical Societyde_CH
dc.relation.ispartofThe Journal of Physical Chemistry Cde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subject2009de_CH
dc.subjectICBCde_CH
dc.subjectMesoporesde_CH
dc.subjectAccessibilityde_CH
dc.subject.ddc540: Chemiede_CH
dc.titleAccessibility of amino groups in postsynthetically modified mesoporous silicade_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Chemie und Biotechnologie (ICBT)de_CH
dc.identifier.doi10.1021/jp901983jde_CH
zhaw.funding.euNode_CH
zhaw.issue24de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end10674de_CH
zhaw.pages.start10667de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume113de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
Appears in collections:Publikationen Life Sciences und Facility Management

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Ritter, H., & Brühwiler, D. (2009). Accessibility of amino groups in postsynthetically modified mesoporous silica. The Journal of Physical Chemistry C, 113(24), 10667–10674. https://doi.org/10.1021/jp901983j
Ritter, H. and Brühwiler, D. (2009) ‘Accessibility of amino groups in postsynthetically modified mesoporous silica’, The Journal of Physical Chemistry C, 113(24), pp. 10667–10674. Available at: https://doi.org/10.1021/jp901983j.
H. Ritter and D. Brühwiler, “Accessibility of amino groups in postsynthetically modified mesoporous silica,” The Journal of Physical Chemistry C, vol. 113, no. 24, pp. 10667–10674, 2009, doi: 10.1021/jp901983j.
RITTER, Hanna und Dominik BRÜHWILER, 2009. Accessibility of amino groups in postsynthetically modified mesoporous silica. The Journal of Physical Chemistry C. 2009. Bd. 113, Nr. 24, S. 10667–10674. DOI 10.1021/jp901983j
Ritter, Hanna, and Dominik Brühwiler. 2009. “Accessibility of Amino Groups in Postsynthetically Modified Mesoporous Silica.” The Journal of Physical Chemistry C 113 (24): 10667–74. https://doi.org/10.1021/jp901983j.
Ritter, Hanna, and Dominik Brühwiler. “Accessibility of Amino Groups in Postsynthetically Modified Mesoporous Silica.” The Journal of Physical Chemistry C, vol. 113, no. 24, 2009, pp. 10667–74, https://doi.org/10.1021/jp901983j.


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