In situ orientation-sensitive observation of molecular adsorption on a liquid/zeolite interface by second-harmonic generation

Monique A. Van Der Veen, Ventsislav K. Valev, Thierry Verbiest, Dirk E. De Vos

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The inherently surface-specific technique of second-harmonic generation was employed to probe the adsorption of an organic molecule, a hemicyanine dye, on b-oriented silicalite-1 films in situ. Measurements were performed in a purpose-built cell for solution experiments. By measuring at two different polarization combinations of the fundamental and second-harmonic light, the orientation of the adsorbed molecules was measured continuously. It has been observed that the adsorbed molecules gradually align themselves with the straight pores of the zeolite crystallites, thus adsorbing into the pores.

Original languageEnglish
Pages (from-to)4256-4261
Number of pages6
JournalLangmuir
Volume25
Issue number8
DOIs
Publication statusPublished - 21 Apr 2009

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