V
Veerapandian Velkannan
Researcher at Thiagarajar College of Engineering
Publications - 21
Citations - 242
Veerapandian Velkannan is an academic researcher from Thiagarajar College of Engineering. The author has contributed to research in topics: Corrosion & Chemistry. The author has an hindex of 7, co-authored 15 publications receiving 203 citations. Previous affiliations of Veerapandian Velkannan include Indian Institute of Technology Madras & Indian Institute of Chemical Technology.
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Journal ArticleDOI
Molecular engineering of sensitizers for dye-sensitized solar cell applications
TL;DR: Recent advances in molecular design and technological aspects of sensitizers based on metal complexes, metal-free organics and tetrapyrrolic compounds which include porphyrins, phthalocyanines as well as corroles are focused on.
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Synthesis, electrochemical and photophysical properties of β-carboxy triaryl corroles
TL;DR: In this article, an unswerving one-pot conversion of 3-formyl-5,10,15-triaryl substituted corroles and their copper(III) derivatives to the corresponding 3-carboxy-5-10-15-cararyl substituted corrosion was achieved by adopting mild reaction conditions by using hydroxylamine hydrochloride and phthalic anhydride.
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β-Tetrakis(2-thienyl)-meso-tetraphenylporphyrins: Synthesis, structural and electrochemical redox properties
TL;DR: In this article, a new family of 2,3,12,13,tetrakis(2-thienyl)-5,10,15,20-tetraphenylporphyrins, H2TPP(2)-4 were synthesized by a Stille cross-coupling reaction using 2, 3, 12, 13, 13-tetrabromo-5, 10, 15, 20 -tetrabromo as the precursor and showed dramatic distortion of the porphyrin ring which depended upon the core metal ion and
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Synthesis of β-di and tribromoporphyrins and the crystal structures of antipodal tri-substituted Zn(II)-porphyrins
TL;DR: Bromination of meso-tetraphenyl porphyrin, H2TPP with controlled amounts of N-bromosuccinimide at ambient conditions in CHCl3 produced β-dibromo and tribromotetramerylporphyrins as mentioned in this paper.
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Mixed β-pyrrole substituted meso-tetraphenylporphyrins and their metal complexes: optical nonlinearity using degenerate four wave mixing technique.
TL;DR: From fluorescence measurements, it has been found that the electron-donating and electron-withdrawing substituted groups at β-pyrrole positions and also the macrocyclic ring distortion of the porphyrin lead to increased radiationless transitions.