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Evolution of electronic and vibronic transitions in metal(II) meso-tetra(4-pyridyl)porphyrins.
Lopes, J M S; Sampaio, R N; Ito, A S; Batista, A A; Machado, A E H; Araujo, P T; Neto, N M Barbosa.
Afiliación
  • Lopes JMS; Instituto de Ciências Exatas e Naturais, Programa de Pos-Graduação em Fisica, Universidade Federal do Pará, Belém, PA, Brazil.
  • Sampaio RN; Department of Chemistry, The University of North Carolina at Chapel Hill, Murray Hall, Chapel Hill, NC, United States.
  • Ito AS; Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
  • Batista AA; Departamento de Química, Universidade Federal de São Carlos, São Carlos, SP, Brazil.
  • Machado AEH; Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil.
  • Araujo PT; Instituto de Ciências Exatas e Naturais, Programa de Pos-Graduação em Fisica, Universidade Federal do Pará, Belém, PA, Brazil; Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL, United States; Center for Materials for Information Technology (MINT Center), University of Alaba
  • Neto NMB; Instituto de Ciências Exatas e Naturais, Programa de Pos-Graduação em Fisica, Universidade Federal do Pará, Belém, PA, Brazil. Electronic address: barbosaneto@ufpa.br.
Spectrochim Acta A Mol Biomol Spectrosc ; 215: 327-333, 2019 May 15.
Article en En | MEDLINE | ID: mdl-30852279
The changing of the electronic and vibronic states due to the insertion of Zn(II), Cu(II), Ni(II) or Co(II) ions in the meso-tetrakis(4-pyridyl)porphyrin ring center is investigated. The combination of absorption, photoluminescence, Raman and infrared spectroscopies with second-derivative-based spectral deconvolution analysis reveals that the structuration of both B- and Q-bands is very sensitive to the decorating ion. Similar to free base porphyrins, metal(II) meso-tetra(4-pyridyl)porphyrins also present their Q-band constituted of multiple electronic transitions, where the central ion plays an important role in the selection of vibration modes that mediate the vibronic transitions. Our novel results will expand and reinterpret current assignments for metal(II) meso-tetra(4-pyridyl)porphyrins vibrational modes available in the literature.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2019 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2019 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido