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    • Covalently linked bisporphyrins bearing tetraphenylporphyrin and perbromoporphyrin units: Synthesis and their properties

      Puttaiah Bhyrappa V Krishnan

      Volume 116 Issue 2 March 2004 pp 71-78

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/116/02/0071-0078

    • Keywords

       

      Bisporphyrins; brominated porphyrins; electrochemical redox; fluorescence studies

    • Abstract

       

      A series of covalently linked bisporphyrins bearingmeso-tetraphenylporphyrin (TPP) and octabromotetraphenylporphyrin (OBTPP) units have been synthesised and characterised. Electrochemical studies on these bisporphyrins showed an anodic shift (∼ 30–60 mV) of the TPP unit and a cathodic shift (∼40-80 mV) of OBTPP in redox potentials. Further, steady-state fluorescence studies on bisporphyrins indicated dramatic decrease in fluorescence quantum yields of the TPP moiety. Electrochemical redox and fluorescence data seem to suggest the possible existence of intramolecular interactions in these bisporphyrins

    • Author Affiliations

       

      Puttaiah Bhyrappa1 V Krishnan2

      1. Department of Chemistry, Indian Institute of Technology-Madras, Chennai - 600 036, India
      2. Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore - 560 012, India

    • Dates

       
      Published
      March 2004
      Manuscript received
      20 October 2003
      Manuscript revised
      1 March 2004

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