Ramakrishna Guda

 

Ramakrishna Guda
Assistant Professor
Post-doc, University of Michigan, 2005-08
PhD, University of Mumbai, 2005
MSc, University of Hyderabad, 1998

3444 Wood Hall
Western Michigan University
Kalamazoo, MI 49008
Ph: 269-387-2854
Fax: 269-387-2909
rama.guda@wmich.edu

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Research Interests

 

·               Ultrafast nonlinear spectroscopy on metal and semiconductor nanomaterials

·               Interfacial electron and energy transfer phenomena for the design of efficient photovoltaics

·               Multi-photon absorption properties of coupled semiconductor, metal-semiconductor nanostructures and chromophore-nanoparticle composites

·               Femtosecond excited state dynamics of macromolecules of interest in light harvesting, photovoltaics and sensors

·               Biophysical characterization of proteins


Selected Recent Publications

1. Temperature-Dependent Optical Absorption Properties of Monolayer-Protected Au25 and Au38 Clusters

Devadas, M. S.; Bairu, S.; Qian, H.; Sinn, E.; Jin, R.; *Ramakrishna, G. J. Phys. Chem. Lett. 2011, 2, 2752-2758.

 

2. Unique Ultrafast Visible Luminescence in Monolayer-Protected Au25 Clusters
 Devadas, M.S.; Kim, J.; Sinn, E.; Lee, D.; Goodson, T. III; *Ramakrishna, G. J. Phys. Chem. C 2010, 114, 22417-22423.

 

 

 3. Dynamics of Interfacial Charge Transfer Emission in Small Molecule-Sensitized TiO2 nanoparticles: Is it localized or Delocalized?

Varaganti, S.; Ramakrishna, G. J. Phys. Chem C 2010, 114, 13917-13925.

   
4. Single- and Multiphoton Turn-On Fluorescent Fe3+ Sensors Based on Bis(rhodamine)

Weerasinghe, A.; Schmeising, C.; Varaganti, S.; Ramakrishna, G.; Sinn, E.  J. Phys. Chem. B 2010, 114, 9413-9419.

 

5. Directional electron transfer in chromophore-labeled quantum-sized Au25 clusters: Au25 as an electron donor
Devadas, M. S; Kwak, K; Park, J-P; Choi, J-H; Jun, C-H; Sinn, E; Ramakrishna, G; Lee, D. J. Phys. Chem. Lett. 2010, 1, 1497-1503.

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