Prof. M. Dayal P. De Costa
Department of Chemistry
Publications
”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.
“Chemistry and Society”, Presidential Address, Institute of Chemistry Annual Session, 2011.
“Performance evaluation of market available oxidative hair dye: An improvement to SLS method”
“Performance evaluation of market available oxidative hair dye: An improvement to SLS method”, M.D.P. De Costa, K.D.P. Hemalal and K.S. Kalhari, Chemistry in Sri Lanka, 27(2), 15-16, 2010.
“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
“A modified method for the determination of total fatty matter in soap”
“A modified method for the determination of total fatty matter in soap”, M.D.P. De Costa, K.D.P. Hemalal. K.R.R.N Warnasekera, K.S. Kalhari, R. Rajapaksha, D.M.U.J. Abeysinghe, A.M.D. Attanayake, Chemistry in Sri Lanka, 27(2), 15, 2010.
“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.
“Speciation studies on Cu(II) and Fe(III) complexes of 1-napthalenemethyliminodiacetohydroxamic acid”
“Speciation studies on Cu(II) and Fe(III) complexes of 1-napthalenemethyliminodiacetohydroxamic acid”, Senthilnithy R., Gunawardhana H. D. and Costa M. D. P. De, Chemistry in Sri Lanka, (2006), 23-2, 34.
“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
“Potentiometric determination of ionization constant of N-arylhydroxamic acid in non-aqueous solvent; a comparative study with spectroscopic method”
“Potentiometric determination of ionization constant of N-arylhydroxamic acid in non-aqueous solvent; a comparative study with spectroscopic method”, R.Senthilnithy, H. D. Gunawardhana and M. D. P. De Costa, , Sri Lanka Association for Advancement of Science, Proceedings of 61st Annual Session (2005), Part I-Abstracts, 68-69.
“Determination of pKa value using Electronic Spectroscopy: A modification of available classical method”
“Determination of pKa value using Electronic Spectroscopy: A modification of available classical method”, Chemistry in Sri Lanka, R.Senthilnithy, H. D Gunawardhana. and M. D. P. De Costa, (2005), 22-2, 22
“Aminodihydroxamic acid derivative of naphthalene as a fluorescence ionophore for iron(III)”
“Aminodihydroxamic acid derivative of naphthalene as a fluorescence ionophore for iron(III)”, R.Senthilnithy, H. D. Gunawardhana and M. D. P. De Costa, Sri Lanka Association for Advancement of Science, Proceedings of 61st Annual Session 2005, Part I-Abstracts, 68.
Photo-Induced Electron Transfer: Mechanistic studies and development of fluorescence probes for analysis of metal ions in trace level Chemistry in Sri Lanka
Photo-Induced Electron Transfer: Mechanistic studies and development of fluorescence probes for analysis of metal ions in trace level Chemistry in Sri Lanka, Institute of Chemistry.
Fluorescence Sensors and switches, Presidential Address- Section E2, SLASS Annual Session, 2004, part II, 96-107
“Substituent Effects on Isobestic Points of Charge Transfer Absorption of Metal Ion-Monohydroxamate in Methanol”
“Substituent Effects on Isobestic Points of Charge Transfer Absorption of Metal Ion-Monohydroxamate in Methanol”, R. Senthilnithy, M. D. P. De Costa and H. D. Gunawardhana, Chemistry in Sri Lanka, 21(2), 18 , 2004.
“Photoinduced electron transfer: Mechanistic studies and development of fluorescence probes for analysis of metal ions of metal ions in trace level”
“Photoinduced electron transfer: Mechanistic studies and development of fluorescence probes for analysis of metal ions of metal ions in trace level”, 21(3), 14-18, 2004.
“Determination of pKa value using electronic spectroscopy: A modification of available classical method
“Determination of pKa value using electronic spectroscopy: A modification of available classical method”, M. D. P. De Costa and H. D. Gunawardhana, Chemistry in Sri Lanka, 21(2), 18 , 2004.
“Determination of Cu (ii) using carbon-paste modified electrodes: an experiment to undergraduates”
“Determination of Cu (ii) using carbon-paste modified electrodes: an experiment to undergraduates” M.D.P. De Costa and R. Senthilnithy, Conference on Chemical Education for National Development, April 29 – 30, 2004.
“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.
“Bihydroxamic acid derivative of Naphthalene as a Fluorescence Ionophore for Mn (II)”
“Bihydroxamic acid derivative of Naphthalene as a Fluorescence Ionophore for Mn (II)”, M.D.P De Costa and W.A.P.A. Jayasinghe, Chemistry in Sri Lanka, 21(2), 17 , 2004.
Taming the Corrosion Evil. In Theme seminar of Annual Sessions of Institute of Chemistry, 2003.
I Love Physical Chemistry. In Workshop for A/L teachers conducted by Institute of Chemistry
Electroanalytical methods, In Modern Analytical Methods
Electroanalytical methods, In Modern Analytical Methods. Prof. R.S. Ramakrishna Memorial Training Seminar. Institute of Chemistry. pp 44-56.
“Naphthalene linked hydroxamic acid derivative for trace metal analysis”
“Naphthalene linked hydroxamic acid derivative for trace metal analysis”, M.D.P De Costa and P.A. Jayasinghe, Chemistry in Sri Lanka 20, 8, 2003
“Frontiers in Chemostry”
A Journey to the Interior of a Molecule: Classical to Modern. In Workshop for A/L teachers on “Frontiers in Chemostry” conducted by Department of Chemistry, University of Colombo.
“Phototransposition of trifluoromethyl benzofluoride”
“Phototransposition of trifluoromethyl benzofluoride”, D.P.De Costa and J.A. Pincock, J.Org Chem. 67, 9484, 2002.
S.P. Deraniyagala and M.D.P De Costa, Organotransition metal catalysis, Monograph Number 14, 2001, (Reprinted in 2011), Institute of Chemistry, Ceylon.
Barriers to Young Scientist in their Career Development, Science: Practice and Perspectives
Barriers to Young Scientist in their Career Development, Science: Practice and Perspectives, Occasional Publication, Volume 4, Nastec.
“Photochemistry and Life” Workshop conducted by Section E2 – Sri Lanka Association of Advancement of Science, 2001.
Intramolecular versus intermolecular photoinduced electron-transfer between anthracene and benzoate chromophore”
Intramolecular versus intermolecular photoinduced electron-transfer between anthracene and benzoate chromophore”, M.D.P. De Costa and K.T.D. Abeynayaka, Annual Sessions, Faculty of Science, University of Colombo, 1, 6, 2000