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  Improvement of Raman Spectra of SAPO-5 by Chromium(III)-Induced Luminescence Quenching

Demuth, D., Unger, K., Schüth, F., Srdanov, V., & Stucky, G. (1995). Improvement of Raman Spectra of SAPO-5 by Chromium(III)-Induced Luminescence Quenching. The Journal of Physical Chemistry, 99(2), 479-482. doi:10.1021/j100002a002.

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Demuth, D.1, 2, Author              
Unger, K.K.1, Author
Schüth, F.2, Author              
Srdanov, V.I.3, Author
Stucky, G.D.3, Author
Affiliations:
1Institut für Anorganische und Analytische Chemie der Johannes Gutenberg-Universität Mainz, Becherweg 24, 55099 Mainz, Germany , ou_persistent22              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
3Department of Chemistry, University of California-Santa Barbara, Santa Barbara, California 93106 , ou_persistent22              

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 Abstract: Addition of small amounts of Cr(N03)3 x 9 H20 during the hydrothermal synthesis of SAPO-5 produced pseudooctahedrally coordinated chromium(III) species within the unidimemsional channel system of the molecular sieve. A broad intense photoluminescence that occurs in the visible region upon 532 nm photoexcitation of calcined SAPO-5 is efficiently quenched in Cr-SAPO-5 allowing for unobstructed detection of Raman scattering spectra. The photoluminescence quenching mechanism appears to involve an energy transfer from the molecular sieve photoexcited surface states to the metastable chromium(III) 2E state, giving rise to the well-known chromium(III) 2E - 4A2 luminescence at 696 nm.

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Language(s): eng - English
 Dates: 1995-01
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/j100002a002
 Degree: -

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Title: The Journal of Physical Chemistry
Source Genre: Journal
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Publ. Info: Washington DC : American Chemical Society
Pages: - Volume / Issue: 99 (2) Sequence Number: - Start / End Page: 479 - 482 Identifier: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766_3