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Optical characterization of organized adsorbates in zeolite microcrystals: Polarized absorption spectroscopy

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Marlow,  Frank
Institute of Applied Chemistry, Berlin, Germany;
Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Hoffmann, K., Marlow, F., & Caro, J. (1996). Optical characterization of organized adsorbates in zeolite microcrystals: Polarized absorption spectroscopy. Impact of Zeolites and Other Porous Materials on the New Technologies At the Beginning of the New Millennium, Pts a and B, 16(4), 281-286. doi:10.1016/0144-2449(95)00141-7.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-2765-B
Abstract
Chromophores are incorporated in a highly ordered manner in molecular sieve crystals. The resulting geometric arrangement is determined by the pore structure. Microfocus u.v.-vis spectroscopy on individual zeolite microcrystals is used for the investigation of the electronic states of the incorporated compounds. The polarization-dependent measurements on single crystals allow the determination of the alignment of zeolite-hosted guest molecules. The new method can be used to determine the guest concentration in the microcrystal at very low loading via the Lambert-Beer law.