Study of ion-ion energy transfer in heteroleptic and heterodinuclear complexes of lanthanide ions as a function of donor-acceptor distance

• Grant number: 17/08098-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: August 01, 2017
• End date: February 28, 2019
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Fernando Aparecido Sigoli
• Grantee: Deborah Asbahr de Lima
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 13/22127-2 - Development of novel materials strategic for integrated analytical devices, AP.TEM

Abstract

The present project aims the synthesis of the complexes [Ln1(hfa)3(tppo)-(¼-L)-Ln2(hfa)3(tppo)], which Ln1 = Tb(III) and Ln2 = Eu(III); hfa = 1,1,1,5,5,5-hexafluoropentane-2,4-dione; tppo = triphenylphosphine oxide; and the bridge ligand L = [(diphenylphosphoryl)R](diphenyl)phosphine oxide (R = methyl, ethyl, propyl or butyl). It will be evaluated the efficiency of the energy transfer/retro-transfer processes between Tb(III) and Eu(III) ions, the emissions intensities and lifetimes according to the distance between the two metallic centers. The complexes will be characterized by NMR, FT-IR, Elemental Analysis, Thermogravimetric Analysis, Complexometric Titration, Raman spectroscopy, Electronic Spectroscopy of UV-VIS, Photoluminescence Spectroscopy, Photochemical Stability, Modeling and Semi-Empirical Calculations for complexes. The complexes may be used for temperature sensing. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LIMA, DEBORAH A.; BISPO JR, AIRTON G.; GALICO, DIOGO A. .; COELHO, SERGIO F. N.; NETO, JOAO H. ARAUJO; ELLENA, JAVIER A.; PETIOTE, LANOUSSE; MAZALI, ITALO O.; SIGOLI, FERNANDO A. .. Tuning the Thermometric Features in 1D Luminescent EuIII and TbIII Coordination Polymers through Different Bridge Phosphine Oxide Ligands. Inorganic Chemistry, v. 62, n. 17, p. 9-pg., 2023-04-17. (21/04876-4, 20/02614-0, 21/08111-2, 17/08098-0, 21/06326-1)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

LIMA, Deborah Asbahr de. Estudos fotofísicos e de transferência de energia íon-íon de complexos heterolépticos contendo íons trivalentes de európio e térbio utilizando trifluoroacetilacetonato e hexafluoroacetilacetonato como ligandes principais, trifenilfosfinóxido como ligante auxiliar e trifluoroacetato ou [(difenilfosforil)(etil ou butil)]fosfinóxido como ligantes em ponte. 2019. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Instituto de Química Campinas, SP.