“Chemistry and Society”, Presidential Address, Institute of Chemistry Annual Session, 2011.
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
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. Prof. R.S. Ramakrishna Memorial Training Seminar. Institute of Chemistry. pp 44-56.
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.
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.