Prof. M. Dayal P. De Costa
Department of Chemistry
Refereed journal articles
”Photochemistry of Substituted 1- naphthylmethyl Esters of Phenylacetic and Phenylpropionic Acids: Radical Pairs, Ion Pairs and Marcus Electron Transfer”
”Photochemistry of Substituted 1- naphthylmethyl Esters of Phenylacetic and Phenylpropionic Acids: Radical Pairs, Ion Pairs and Marcus Electron Transfer”, D. P. De Costa and J. A. Pincock, J. Am. Chem. Soc. 115, 2180, 1993.
“Fluorescence quenching and bonding properties of some hydroxamic acid derivatives by iron(III) and manganese(II)”
“Fluorescence quenching and bonding properties of some hydroxamic acid derivatives by iron(III) and manganese(II)”, M. D. P. De Costa and R. Senthilnithy and H.D. Gunawardhana, Luminescence: The Journal of Biological and Chemical Luminescence, 24(4), 203-208, 2009
“The pKa values of ligand and stability constants of the complexes of Fe(II), Cu(II) and Ni(II) with some hydroxamic acids: a comparative study of three different potentiometric methods”
“The pKa values of ligand and stability constants of the complexes of Fe(II), Cu(II) and Ni(II) with some hydroxamic acids: a comparative study of three different potentiometric methods”, R. Senthilnithy, M. D. P. De Costa and H.D. Gunawardhana, J. Natn. Sci. Foundation of Sri Lanka 36(3), 191-198, 2008.
“Insitu determination of copper(II) and cobalt(II) using adsorptive cathodic stripping voltametry with hydroxamic acid modified carbon paste electrode”
“Insitu determination of copper(II) and cobalt(II) using adsorptive cathodic stripping voltametry with hydroxamic acid modified carbon paste electrode”, M. D. P. De Costa, R. Senthilnithy and H.D. Gunawardhana, J. Natn. Sci. Foundation of Sri Lanka 34(4), 189-194, 2006.
“Absolute pK(a) determination for N=phenylbenzohydroxamic acid derivatives”
“Absolute pK(a) determination for N=phenylbenzohydroxamic acid derivatives” R. Senthilnithy, H.D. Gunawardhana, M.D.P. De Costa, D.P. Dissanayake J. Molecular Structure -THEOCHEM 761 (1-3): 21-26 MAR 17 2006
“Detailed studies on complexation behaviors and mechanism of fluorescence quenching of naphthalene linked hydroxamic acid with transition metal ions by uv-visible and fluorescence spectra”
“Detailed studies on complexation behaviors and mechanism of fluorescence quenching of naphthalene linked hydroxamic acid with transition metal ions by uv-visible and fluorescence spectra”, D.P De Costa and P.A. Jayasinghe, Journal of Photochemistry and Photobiology: Chemistry, 2004, 162, 591.
“Phototransposition of trifluoromethyl benzofluoride”
“Phototransposition of trifluoromethyl benzofluoride”, D.P.De Costa and J.A. Pincock, J.Org Chem. 67, 9484, 2002.
1,3-Dimethoxy-5-methylene-1,3-cyclohexadiene compounds with Leaving Group at C6 : Generation, Solvolytic Reactivity and their Importance in the Photochemistry of 3,5-diethylbenzyl derivatives”
1,3-Dimethoxy-5-methylene-1,3-cyclohexadiene compounds with Leaving Group at C6 : Generation, Solvolytic Reactivity and their Importance in the Photochemistry of 3,5-diethylbenzyl derivatives”, D. P. De Costa, N. Nowell, A. L. Pincock, J. A. Pincock and S. Rifai,, J. Org. Chem. 65, 4698-4705, 2000.
“Photochemistry of aryl tert-butyl Ethers in methanol: the Effectv of Substituents on an excited state cleavage reaction”
“Photochemistry of aryl tert-butyl Ethers in methanol: the Effectv of Substituents on an excited state cleavage reaction”, D. P. De Costa, a. Benette, A. L. Pincock, J.A. Pincock and R. Stefanova., J. Org. Chem. 65, 4162-4168, 2000.
”The Norish Type II Photofragmentation of Esters Induced by Intamolecular Electron Transfer”
”The Norish Type II Photofragmentation of Esters Induced by Intamolecular Electron Transfer”, D. P. De Costa, A. K. Benett and J. A. Pincock,, J. Am. Chem. Soc. 121, 3785-3786, 1999.
“Further Studies on Photoinduced Intramolecular Electrn Transferof Substituted Benzoate esters of 9-anthracene methanol-II-substituent and Medium Effects”
“Further Studies on Photoinduced Intramolecular Electrn Transferof Substituted Benzoate esters of 9-anthracene methanol-II-substituent and Medium Effects”, D. P. De Costa and K. A. D. Sriyanimallika, J. Natn. Sci. Foundation of Sri Lanka 27(4), 277-291, 1999.
“Photoinduced Intramolecular Electron Transfer of Substituted Benzoate Esters of 9-anthracenemethanol in methanol”
“Photoinduced Intramolecular Electron Transfer of Substituted Benzoate Esters of 9-anthracenemethanol in methanol”, D. P. De Costa, P. K. Cumaratunga and K. A. D. Sriyanimallikla, J. Nat. Sci. Coun. Sri Lanka 25(2), 127-139, 1997.
Substituent and charge Transfer Distribution Effects on the Redox Potentials of Radicals”
Substituent and charge Transfer Distribution Effects on the Redox Potentials of Radicals”, D. P. Costa and J.A. Pincock, P. H, Mile and D. D. M. Wayner, J. Can. Chem. 70, 121, 1992.
“Intramolecular Electron Transfer in the Photochemistry of Substituted 1- naphthylmethyl Ester of Benzoic Acids”
“Intramolecular Electron Transfer in the Photochemistry of Substituted 1- naphthylmethyl Ester of Benzoic Acids”. D. P. Costa and J. A. Pincock;. Can. J. Chem. 70, 1879, 1992.
“Control of Product Distribution by Marcus Type Electron-Transfer Rates for the Radical Pair Generated in Benzylic Ester Photochemistry”
“Control of Product Distribution by Marcus Type Electron-Transfer Rates for the Radical Pair Generated in Benzylic Ester Photochemistry”, D. P. Costa and J. A. Pincock, J. Am. Chem. Soc. 111, 8984, 1989.
“Two Dimensional Fluorescence Probes”
“Two Dimensional Fluorescence Probes”, D. P. De Costa, A. P. de Silva and S. T. Pathirana, Journal of Canadian Chemical Society 65, 1416, 1987.