Excited state quenching studies of tris(2,2'-bipyridine)ruthenium(II) by ferrocenium-intercalated zirconium phosphate

INOR 228

Mitk’El B. Santiago, mitkel@gmail.com1, Myrna Z. Bosques2, Chasterie Declet-Flores1, Agustín Díaz, agustin143pr@gmail.com1, Mayrim V. Ríos-Pérez1, Meredith M. Vélez, siquiliflin@yahoo.com1, Guadalupe Ana R1, and Jorge L. Colon, jorgecr@caribe.net3. (1) Department of Chemistry, University of Puerto Rico-Río Piedras Campus, PO Box 23346, San Juan, PR 00931-3346, (2) Department of Chemistry Edif. Facundo Hueso, University of Puerto Rico Rio Piedras Campus, San Juan, PR 00931, (3) Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, P.O. Box 23346, Rio Piedras, PR 00931
Zirconium phosphates (ZrP), which are acidic, inorganic, ion exchangers with layered structures, have been extensively investigated. We are studying the use of these materials as hosts for inorganic complexes using a 10.3 Å phase of ZrP, which we have recently demonstrated directly exchanges large metal complexes.1-4 Recently, we performed the intercalation reaction between ferrocene and ZrP which resulted in the in-situ formation of the ferrocenium ion within the zirconium phosphate layers. The characterization was done using X-ray powder diffraction, infrared spectroscopy, and UV-visible spectrophotometry. The intercalated material has been used as an electron acceptor in the presence of [Ru(bpy)3]2+. Ferrocinium-exchanged zirconium phosphate successfully quenched the luminescence of [Ru(bpy)3]2+, as shown by luminescence spectroscopy. The photochemical and photophysical analysis will be presented.

M.B.S. acknowledges the financial support of PR-AGEP (NSF grant HRD-0302696) Graduate Fellowship.

(1) Martí, A. A.; Colón, J. L. Inorg. Chem. 2003, 42, 2830-2832. (2) Santiago, M. B.; Vélez, M. M.; Borrero, S.; Díaz, A.; Casillas, C. A.; Hofmann, C.; Guadalupe, A. R.; Colón, J. L. Electroanalysis 2006, 18, 559-572. (3) Bermúdez, R. A.; Colón, Y.; Tejada, G. A.; Colón, J. L. Langmuir 2005, 21, 890-895. (4) Bermúdez, R. A.; Arce, R.; Colón, J. L. J. Photochem. Photobiol. A: Chemistry 2005, 175, 201-206.

 

Frontiers of Inorganic Chemistry: The Gray Areas
7:00 PM-10:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Sci-Mix
8:00 PM-10:00 PM, Monday, 11 September 2006 Moscone Center -- Hall D, Sci-Mix

Division of Inorganic Chemistry

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