V. Velkannan

Thyagarajar College of Engineering, Madurai 
"V. Velkannan"
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P. Bhyrappa grad student 2011 IIT Madras
 (Unsymmetrically beta-pyrrole substituted tetraphenylporphyrins: Synthesis, structure and their properties)
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Velkannan V, Bhyrappa P. (2015) Unsymmetrically mixed β-octasubstituted meso-tetraphenylporphyrins: Structural and electrochemical redox properties Polyhedron. 87: 170-180
Bhyrappa P, Sarangi UK, Velkannan V, et al. (2014) B-Tetrasubstituted meso-tetra(4'-n-butylphenyl)porphyrins and their metal complexes: Synthesis and structural properties European Journal of Inorganic Chemistry. 2014: 5760-5770
Kalnoor BS, Bisht PB, Jena KC, et al. (2013) Mixed β-pyrrole substituted meso-tetraphenylporphyrins and their metal complexes: optical nonlinearity using degenerate four wave mixing technique. The Journal of Physical Chemistry. A. 117: 8216-21
Sudhakar K, Velkannan V, Giribabu L. (2012) Synthesis, electrochemical and photophysical properties of β-carboxy triaryl corroles Tetrahedron Letters. 53: 991-993
Bhyrappa P, Velkannan V. (2012) β-Tetrakis(2-thienyl)-meso-tetraphenylporphyrins: Synthesis, structural and electrochemical redox properties Inorganica Chimica Acta. 387: 64-73
Bhyrappa P, Velkannan V. (2011) β-Tetrabromo-meso-tetrakis(4′-substituted phenyl)porphyrins: synthesis and electrochemical redox properties Journal of Porphyrins and Phthalocyanines. 15: 883-889
Bhyrappa P, Velkannan V, Maity A. (2010) Regioselective syntheses of 2,3-disubstituted-12-formyl-5,10,15,20-tetraphenylporphyrins and their metal complexes Journal of Porphyrins and Phthalocyanines. 14: 459-467
Bhyrappa P, Velkannan V. (2010) Synthesis of β-di and tribromoporphyrins and the crystal structures of antipodal tri-substituted Zn(II)-porphyrins Tetrahedron Letters. 51: 40-42
Bhyrappa P, Velkannan V, Varghese B. (2007) 5,10,15,20-Tetra-kis(3,5-difluoro-phen-yl)porphyrin. Acta Crystallographica. Section E, Structure Reports Online. 64: o190
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