This work was supported by the Swiss National Science Foundation, Projects NFP 4047-057481 and NF 2000-053414/98/1. We would like to thank Drs. Silke Megelski and Niklaus Gfeller for their contributions and fruitful discussions.
Intrazeolite Diffusion Kinetics of Dye Molecules in the Nanochannels of Zeolite L, Monitored by Energy Transfer
Article first published online: 20 DEC 2000
© 2000 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany
Volume 1, Issue 4, pages 211–217, December 15, 2000
How to Cite
Pfenniger, M. and Calzaferri, G. (2000), Intrazeolite Diffusion Kinetics of Dye Molecules in the Nanochannels of Zeolite L, Monitored by Energy Transfer . ChemPhysChem, 1: 211–217. doi: 10.1002/1439-7641(20001215)1:4<211::AID-CPHC211>3.0.CO;2-I
- Issue published online: 20 DEC 2000
- Article first published online: 20 DEC 2000
- Manuscript Received: 17 JUL 2000
- energy transfer;
- mass transport;
Intracrystalline diffusion kinetics of two cationic dyes in an aqueous medium were studied by means of energy transfer from an electronically excited donor to an acceptor located in one-dimensional crystalline channels. Different stages of the diffusion processes were visualized by using fluorescence microscopy. The picture illustrates the counter diffusion of the dye (hatched block) and water molecules (circles) in such a one-dimensional channel; the diffusion of the water molecules past the dye (12) is the rate-determining step rather than the period between encountering different dyes (23).