Title: Host-guest interactions and orientation of dyes in the one-dimensional channels of zeolite L
Authors : Fois, Ettore
Tabacchi, Gloria
Devaux, André
Belser, Peter
Brühwiler, Dominik
Calzaferri, Gion
Published in : Langmuir
Volume(Issue) : 29
Issue : 29
Pages : 9188
Pages to: 9198
Publisher / Ed. Institution : American Chemical Society
Issue Date: 2013
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Orientation; Dye; Computational; Zeolite
Subject (DDC) : 540: Chemistry
Abstract: A combined experimental and modeling study of methylacridine (MeAcr+) dye-zeolite L composites unravels the microscopic origin of their functional properties. The anisotropic orientation of the cationic dye inside the ZL channel is unambiguously determined and understood. The most stable orientation of MeAcr+, which features both its long and short molecular axes nearly perpendicular to the channel axis, is mainly determined by dye-ZL electrostatic interactions but also depends on the cosolvent water. In ZL, MeAcr+ is not hydrogen bonded to water or ZL framework oxygens and is hydrophobically solvated by water molecules. These findings further support the hypothesis that the cosolvent can importantly influence properties of dye-zeolite composites. Of relevance for a deeper comprehension of the physical chemistry of these hybrids is the observation that trivial energy transfer processes (self-absorption) are often playing a significant role in the optical properties of the composites.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Publication type: Article in scientific Journal
DOI : 10.1021/la400579w
ISSN: 0743-7463
URI: https://digitalcollection.zhaw.ch/handle/11475/2613
Appears in Collections:Publikationen Life Sciences und Facility Management

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