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Tuning the Thermometric Features in 1D Luminescent EuIII and TbIII Coordination Polymers through Different Bridge Phosphine Oxide Ligands.
A Lima, Deborah; Bispo-Jr, Airton G; Galico, Diogo A; Coelho, Sergio F N; Araujo Neto, João H; Ellena, Javier A; Petiote, Lanousse; Mazali, Italo O; Sigoli, Fernando A.
Afiliação
  • A Lima D; Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil.
  • Bispo-Jr AG; Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil.
  • Galico DA; Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
  • Coelho SFN; Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil.
  • Araujo Neto JH; Institute of Physics, University of São Paulo, São Carlos, São Paulo 13566-590, Brazil.
  • Ellena JA; Institute of Physics, University of São Paulo, São Carlos, São Paulo 13566-590, Brazil.
  • Petiote L; Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil.
  • Mazali IO; Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil.
  • Sigoli FA; Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil.
Inorg Chem ; 62(17): 6808-6816, 2023 May 01.
Article em En | MEDLINE | ID: mdl-37125414
TbIII and EuIII systems have been investigated as ratiometric luminescent temperature probes in luminescent coordination polymers due to TbIII → EuIII energy transfer (ET). To help understand how ion-ion separation, chain conformation as well as excitation channel impact their thermometric properties, herein, [Eu(tfaa)3(µ-L)Tb(tfaa)3]n one-dimensional (1D) coordination polymers (tfaa- = trifluoroacetylacetonate, and L = [(diphenylphosphoryl)R](diphenyl)phosphine oxide, R = ethyl - dppeo - or butyl - dppbo) were synthesized. The short µ-dppeo bridge ligand leads to a more linear 1D polymeric chain, while the longer µ-dppbo bridge leads to tighter packed chains. As the temperature rises from 80 K, upon direct TbIII excitation at 488 nm, the TbIII emission intensity decreases, while the EuIII emission intensity increases after 160 and 200 K when L = dppeo or dppbo, respectively. The temperature-dependent emission intensities, due to TbIII → EuIII ET, enable the development of ratiometric luminescent temperature probes featuring maximum relative thermal sensitivity up to 3.8% K-1 (250 K, L = dppbo, excitation at 488 nm). On the other hand, the same system displays maximum thermal sensitivity up to 3.5% K-1 (323 K) upon ligand excitation at 300 nm. Thus, by changing the excitation channel and bridge ligand that leads to modification of the polymer conformations, the maximum relative thermal sensitivity can be tuned.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Inorg Chem Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Inorg Chem Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos