Accession Number : ADA203454

Title :   Adsorption, Mobility and Organization of Organic Molecules at Clay Surfaces Probed by Photophysics and Photochemistry.

Descriptive Note : Interim rept. no. 5.

Corporate Author : KATHOLIEKE UNIV LEUVEN (BELGIUM)

PDF Url : ADA203454

Report Date : 15 Dec 1988

Pagination or Media Count : 16

Abstract : This study was initiated to obtain a more characterized colloidal system compared to the clay suspensions (monodisperse, no interparticle exchange, no aggregation of the colloidal particles). In order to facilitate the interpretation of the fluorescence decays of adsorbed molecules. This system is further investigated in more detail. It was however found that also in this system the fluorescence decays of the adsorbed molecules are rather complicated. This phenomena, the complicated fluorescence decay of molecules adsorbed on various surfaces, is very common in literature. A lot of different functions have been used to describe the fluorescence decays of adsorbed molecules. It is indeed possible that a fluorescence decay can be fitted by various different functions. Therefore it seemed appropriate to start a more theoretical study, to find out to what extent it is possible to distinguish between several models. (AW)

Descriptors :   *CLAY, *COLLOIDS, *DECAY, *FLUORESCENCE, *ORGANIC COMPOUNDS, *SURFACE REACTIONS, ADSORPTION, MOLECULES, PARTICLES, PHOTOCHEMICAL REACTIONS, SURFACES, MOLECULAR PROPERTIES

Subject Categories : Organic Chemistry
      Physical Chemistry
      Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE