Synthesis, Chracterisation and Applications of β-Functionalized Porphyrins: A Systematic & Effective Approach to Final Synthesis of Chlorin Analogous Benzo-Annulated Porphyrin Derivative

The new series of porphyrins synthesis with the substituent patterns and their metal complexes have been reported and discussed. The synthesis of tetraphenyl porphyrin (H 2 TPP) and the corresponding metalloporphyrin i.e CuTPP and its nitration have been reported by the literature methods. Afterthat the demetallation reported and the subsequent bromination remarkably showed which was used for producing zinc binded [Zn (II)] porphyrin compound as well as synthesis of monobenzo compounds completed successfully. Demetallation of Zn (II) binded monobenzo form intensified the production of the two fractions of porphyrins; one is H 2 TPPMNMB and finally complementing the chlorin analogous i.e H 2 TPC(MN) 2 MB (where MB= Monobenzo, MN= Malononitrile, TPC = Tetraphenyl Chlorin). All the synthesized compounds have been analyzed and characterised by the various spectroscopic techniques such as Ultraviolet Visible (UV-Vis) spectroscopy and Nuclear Magnetic Resonance (NMR) spectroscopy etc. The produced porphyrins provided good yields and the substituted and metallated porphyrins in CHCl 3 show a pronounced red shifted absorption spectra through UV-Vis whose spectral features and the extend of red shift depends on the electronic nature of the β-substituents. Deep potential research and study will configure the inherent properties of the porphyrins molecules to ascertain the applicability of designing field in the modern era.