Resonance energy transfer and tunable photoluminescence of terbium(III) heterobimetallic dicyanoaurate(I)-dicyanoargentate(I) powders

INOR 688

Henry J. Tracy, tracy@usm.maine.edu1, James Ford, jford@usm.maine.edu1, Jerome L. Mullin, jmullin@une.edu2, Alora Johnson1, and Aaron Keller, aaron.keller@maine.edu1. (1) Department of Chemistry, University of Southern Maine, Science 161, P.O. Box 9300, Portland, ME 04104, (2) Department of Chemistry, University of New England, 11 Hills Beach Road, Biddeford, ME 04005

The room temperature and 77 K photoluminescence of a series of terbium(III) gold/silver(I) dicyanides will be presented. Tb[Au(CN)2]3 powder exhibits strong photoluminescence from both an aurate-centered lumophore as well as the characteristic narrow bands from the 5D4 excited term of terbium(III) at room temperature and 77K. The analogous silver compound, Tb[Ag(CN)2]3, displays similar photoluminescence behavior with the exception of the argentate-centered emission at room temperature. Here, we present the photoluminescence behavior of the pure powders as well as three powders of intermediate gold-silver composition, namely Tb[AuxAg1-x(CN)2]3, with x ~ 0.25, 0.5, 0.75. The relative efficiencies of resonance energy transfer between the different d10 metal lumophores to terbium(III) will be presented.

 

General
7:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Division of Inorganic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006