P. Stanley May, Professor of Physical Chemistry Laser Spectroscopy / Photo-Active Materials  Office: Churchill Haines 106; Phone: (605) 677-3141; Email: smay@usd.edu
B.S. 1982 College of Charleston PhD 1987, University of Virginia Postdoctoral Associate, 1988-1990 University of Bern, Switzerland  Postdoctoral Associate, 1990-1992 University of Virginia  Laser Lab Glove Box Flamesealing Vycor

Research Interests: My research focuses on the synthesis and characterization of novel light-emitting materials.  I am involved in several larger research programs involving other scientists from USD and the region.  These are:

1. The Center for Research and Development of Light-Activated Materials (CRDLM)

2. The Northern Plains Undergraduate Research Center (NPURC)

3. Research Experiences for Undergraduates (REU) Program: “Photodynamics and Materials at the Nanoscale”

4. Photo-Activated Nanoscale Systems (PANS)

Recent Publications

1.   “Highly Luminescent NIR-to-Visible Upconversion Thin Films and Monoliths Requiring No High-Temperature Treatment” Lin, C.; Berry, M. T.; Anderson, R.; Smith, S.; May, P. S., Chem. Mater. 2009, 21, 3406.

2.   “Geometry Dependence of Field Enhancement in 2D Metallic Photonic Crystals” Paudel, H.P.; Bayat, K.; Baroughi, M.F.; May, S.; Galipeau, D., Opt. Express 2009, 17, 22179.

3.   “Monoporphyrinate Ytterbium (III) Complexes with New Ancillary Ligands: Synthesis, Structural Analysis and Photophysical Investigation” He, H.; May, P. S.; Galipeau, D., Dalton Trans. 2009, (24), 4766-4771.

4.  “Structure and Photophysics of Near-infrared Emissive Ytterbium(III) Monoporphyrinate Acetate Complexes Having Neutral Bidentate Ligands”  He, H.; Sykes, A. G.;  May, P. S.;  He, G. Dalton Trans. 2009, 7454-7461

5.  “Near-Infrared (NIR) to Red and Green Up-Conversion Emission from Silica  Sol-Gel Thin Films  Made with La_0.45Yb_0.50Er_0.05F₃ Nanoparticles, Hetero-           Looping-    Enhanced Energy Transfer (Hetero-LEET): A New Up-Conversion Process” Sivakumar, S.; van Veggel, F C. J. M.; May, P. S. J. Am.  Chem. Soc., 2007, 129(3),     620.

6.  “Photodissociation and Photoionization Mechanisms in Lanthanide-based Fluorinated b-Diketonate  Metal-Organic Chemical-Vapor Deposition Precursors”           Meng, Q.; Witte, R. J.; May, P. S.; Berry,  M. T., Chem. Mater. 2009. (published on web; DOI 10.1021/cm9023056)

7.   "Luminescence Properties and Water Coordination of Eu³⁺ in the Binary Solvent Mixture Water / 1-Butyl-3-Methylimidazolium Chloride”  Samikkanu,S.; Mellem, K.;  Berry, M.T.;  May, P.S. Inorg. Chem. 2007, 46, 7121.

8.   “Wavelength and Metal Dependence in the Photofragmentation of a Gas-Phase Lanthanideb-Diketonate Complex” Ow, F.P.; Berry, M.T.; May, P.S.; Zink. J.I. J. Phys. Chem. A 2007, 111, 4144.

9.   “Wavelength Dependent Photofragmentation Patterns of Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)Ln(III) (Ln=Eu, Tb, Gd) in a Molecular Beam”  Ow, F.P.; Berry, M. T. ; May, P. S.; Zink, J. I.  J. Phys. Chem. A.; (Letter), 2006, 110, 7751.

10. “Temperature Dependence of Exited-State Relaxation Processes of Pr³⁺ in Pr-doped and Pr,Gd-Doped CsCdBr₃”  An, Y.; May, P.S.  J. Lumin., 2006, 118, 147.