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The photoluminescence of rhodamine B encapsulated in mesoporous Si-MCM-48, Ce-MCM-48, Fe-MCM-48 and Cr-MCM-48 molecular sieves

Paper ID Volume ID Publish Year Pages File Format Full-Text
28612 44082 2006 6 PDF Available
Title
The photoluminescence of rhodamine B encapsulated in mesoporous Si-MCM-48, Ce-MCM-48, Fe-MCM-48 and Cr-MCM-48 molecular sieves
Abstract

Photophysical and photochemical properties of rhodamine B molecules encapsulated into various mesoporous molecular sieves were investigated by absorption and emission spectra and fluorescence decay. The different fluorescence properties were observed within different RhB/Me-MCM-48 (Me = Ce, Fe, Cr) composites. There were larger blue shifts in fluorescence spectra when RhB included in Ce-MCM-48 than that in Fe-MCM-48 and Cr-MCM-48. However, the much larger electron transfer efficiencies from excited dye molecules to iron and chromium oxide occurred within the system of RhB/Fe-MCM-48 and RhB/Cr-MCM-48 than that within the system of RhB/Ce-MCM-48. The effects of Ce-containing amounts on the fluorescence properties were also investigated in detail.

Keywords
MCM-48; Me-MCM-48; Fluorescence; Rhodamine B; Electron transfer
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The photoluminescence of rhodamine B encapsulated in mesoporous Si-MCM-48, Ce-MCM-48, Fe-MCM-48 and Cr-MCM-48 molecular sieves
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 180, Issues 1–2, 15 May 2006, Pages 59–64
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us