Dr. Mahinda Ranasinghe

Mahinda Ranasinghe, PhD

Assistant Professor

Chemistry


Education

Senior Research Associate - University of Calgary, Alberta Canada, 2012 - 2014

Lecturer -University of Peradeniya, Sri Lanka, 2006 - 2008

Postdoctoral Researcher - Arizona State University, 2005 - 2006

Postdoctoral Researcher - Carnegie Mellon University, 2004 - 2005

PhD, Wayne State University, 2004

BS, University of Peradeniya, Sri Lanka

Keywords

Photochemistry, Ultra-fast Laser Spectroscopy, Solar Energy and Sustainability, Physical Chemistry ,  Methanol Economy

Research Interests

The research interests of Dr. Ranasinghe's group is centered on physical chemistry and spectroscopy.  Yet our research is predominantly multidisciplinary. They utilize several spectroscopic techniques to characterize the optoelectronic properties of nanoparticles, chromophore metal complexes, quantum dots and nano-conjugates etc., The main experimental technique available in their research group is the femtosecond time-resolved fluorescence upconversion spectroscopy. Time-correlated single photon counting, spectrofluorometer and UV-VIS spectrophotometer are also available to support our research. These instruments are valuable in studying fluorescence lifetime, fluorescence energy transfer, and excited state charge transfer and fluorescence decay kinetics of novel materials.

Recent Publications

Edwards, Les; Turner, Danielle; Champion, Cody; Khandelwal, Megha; Zingler, Kailee; Stone, Cassidy; Rajapaksha, Ruwini D.; Yang, Jing; Ranasinghe, Mahinda I.;  Kornienko, Alexander; Frolova, Liliya; Rogelj, Snezna " 2,3-Distyrylindole as Novel Photoactivated Antibacterial Agents". Bioorganic and Medicinal Chemistry Letters. 2018. manuscript accepted.

Rajapaksha, Ruwini D.; Benet, Matthias; Champion, Cody; Frolova, Liliya V.; Rogelj, Snezna; Choudhury, Pabitra; Ranasinghe, Mahinda I. Spectroscopic study of  photoactive antibacterial agent: 2,3-Distyrylindoles. Journal of Physical Chemistry A, 2018, 122 (4), 937-945.

Rajapaksha, Ruwini D.; Ranasinghe, Mahinda I. The shell thickness and surface passivation dependence of fluorescence decay kinetics in CdSe/ZnS core-shell and CdSe core colloidal quantum dots. Journal of Luminescence, 2017, 192C, 860-866.

Varnavski, Oleg P.; Ranasinghe, Mahinda I.; Yan, Xingzhong; Bauer, Christina A.; Chung, Sung-Jae; Perry, Joseph W.; Marder, Seth R.; Goodson, Theodore, III. Ultrafast Energy Migration in Chromophore Shell-Metal Nanoparticle Assemblies. Journal of the American Chemical Society 2006, 128(34), 10988-10989.

Ranasinghe Mahinda I.; Hager, Michael W.; Gorman, Christopher B.; Goodson III, Theodore Time-Resolved Fluorescence Investigation of Energy Transfer in Compact Phenylacetylene Dendrimers The Journal of Physical Chemistry B. 2004, 108(25), 8543-8549.

Ranasinghe Mahinda I.; Murphy, Prescott; Lu, Zhikuan; Huang, Songping D.; Twieg Robert J.; Goodson III, Theodore Temperature Dependence of Incoherent Excitation Energy Transfer in a Dendritic core system with Benzene Branching Center, Chemical Physics Letters. 2004, 383(3-4), 411-417.

Ranasinghe, Mahinda I.; Wang, Ying; Goodson III, Theodore; Excitation Energy Transfer in Branched Dendritic Macromolecules at Low (4K) Temperatures. Journal of the American Chemical Society 2003, 125(18), 5258-5259.

Wang, Ying; Ranasinghe, Mahinda I.; Goodson III, Theodore; Ultra-fast Fluorescence Investigation of Excitation Energy Transfer in Different Dendritic Core Branched Structures. Journal of the American Chemical Society. 2003, 125(32), 9562-9563.

Ranasinghe, Mahinda I.; Varnavski, Oleg P.; Pawlas, Jan; Hauck, Sheila I.; Louie, Janis; Hartwig, John F.; Goodson, Theodore, III. Femtosecond Excitation Energy Transport in Triarylamine Dendrimers. Journal of the American Chemical Society 2002, 124(23), 6520-6521