01952nas a2200217   4500008004100000022001300041245013000054210007300184260000800257300001400265490000700279520113300286100002301419700002601442700002301468700002101491700002401512700002701536700002501563856014601588       2018                        eng d  a1434194800aSubstituent‐induced deformed ni–porphyrin as an electrocatalyst for the electrochemical conversion of water into dioxygen0 aSubstituent‐induced deformed ni–porphyrin as an electrocatalyst   cAPR  a1549-15550 v143 a<p>The electrochemical water oxidation ability of complexes 5,15‐diphenylporphinatonickel(II) (A) and 5,15‐bis(3,5‐di‐tert‐butylphenyl)porphinatonickel(II) (B) in the oxygen evolution reaction (OER) have been investigated in an alkaline medium. Complex B was found to be kinetically and thermodynamically more active than complex A. The overpotential and Tafel slope of complex B are lower than those of complex A by 30 mV and around 45 mV/decade, respectively, which supports the higher activity of B. Moreover, stability tests endorse the sustainability of both samples under alkaline conditions. It has been found that the 3,5‐di‐tert‐butylphenyl substituent in B plays a decisive role in achieving a better OER onset potential and current than that obtained with A, which is a result of the modulation of the structural parameters of B. Furthermore, the measured OER activities of A and B have been correlated with their molecular arrangement as well as differences in their bonding characteristics and dipole moments. For further insight, the obtained results have been confirmed by a theoretical study.</p>1 aKrishna, J., V. S.1 aKrishna, Narra, Vamsi1 aSingh, Santosh, K.1 aShaw, Pankaj, K.1 aDhavale, Vishal, M.1 aVardhaman, Anil, Kumar1 aGiribabu, Lingamallu  uhttps://library.ncl.res.in/content/substituent%E2%80%90induced-deformed-ni%E2%80%93porphyrin-electrocatalyst-electrochemical-conversion-water