Effect of surface and interlayer structure on the fluorescence of rhodamine B-montmorillonite: modeling and experiment
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
15276049
DOI
10.1016/j.jcis.2004.03.035
PII: S0021979704003030
Knihovny.cz E-resources
- MeSH
- Bentonite chemistry MeSH
- Models, Chemical MeSH
- Fluorescence MeSH
- Models, Molecular MeSH
- Molecular Structure MeSH
- Surface Properties MeSH
- Rhodamines chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Bentonite MeSH
- rhodamine B MeSH Browser
- Rhodamines MeSH
The surface and interlayer structure of rhodamine B (RhB)-montmorillonite for various guest concentrations has been studied using a combination of X-ray powder diffraction and molecular modeling (molecular mechanics and molecular dynamics) in the Cerius(2) modeling environment. The joint effect of surface and interlayer structure on the fluorescence spectrum has been observed and discussed in relation to the position and orientation of RhB(+) cations with respect to the silicate layer. Structural analysis showed that the surface and interlayer structures are different as to the arrangement of RhB(+) cations, and both of them strongly depend on the guest concentration in the intercalation solution and on the method of preparation. The repeated intercalation of montmorillonite by rhodamine B used in the present work allowed obtaining RhB-montmorillonite in the maximum degree of ion exchange for every sample.
References provided by Crossref.org
Surface and interlayer structure of vermiculite intercalated with methyl viologen
