Luminescence of tetraphenylporphyrin by an energy transfer from photoexcited ZnO nanoparticle

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Abstract

Photoluminescence (PL) properties of meso-tetraphenylporphine-4,4',4",4'''-tetracarboxylic acid (H_2TPP(COOH)_4) bound to ZnO nanoparticle were studied. With 1.2 H_2TPP(COOH)_4 molecules per ZnO particle, the PL intensity of H_2TPP(COOH)_4 with a 325 nm excitation was increased to a 3.2-times larger value by the conjugate formation with ZnO. The excitation spectrum of PL gave an evidence of an emission of H_2TPP(COOH)_4 by an energy transfer from ZnO. An analysis based on the Forster theory gave a reasonable value of 1.8 nm for the average distance between H_2TPP(COOH)_4 and emissive surface defects on the ZnO particle.

Journal

  • Chemical Physics Letters

    Chemical Physics Letters (501), 385-389, 2011-01

    Elsevier

Codes

  • NII Article ID (NAID)
    120005694043
  • NII NACSIS-CAT ID (NCID)
    AA00602122
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    0009-2614
  • Data Source
    IR 
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