David JONAS

David JONAS

Professor

Office: Ekeley W145D
Office Phone: 303 492 3818
Lab: Ekeley W155
Lab Phone: 303 492 6983
Fax: 303 492 5894
Group Website: Jonas Research Group
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Ph.D.: Massachusetts Institute of Technology, 1992
Postdoctoral Fellow: NSF Fellow at University of Chicago, 1992-94
Awards:

  • Ahmed Zewail Award in Ultrafast Science and Technology (ACS), 2013
  • University of Colorado Faculty Fellowship, 2009
  • Fellow of the American Physical Society, 2007
  • National Science Foundation Special Creativity Award, 2006
  • Alfred P. Sloan Research Fellow, 1999-2003
  • David and Lucile Packard Fellow in Science and Engineering, 1996-2001
  • University of Colorado Junior Faculty Development Award, 1996
  • Camille and Henry Dreyfus New Faculty Award, 1995

 

Fast Electronic and Vibrational Dynamics

Fast electronic motions are important in photochemistry, photosynthesis, interfacial electron transfer, and in some proposed next generation photovoltaics. In 1998, our group used femtosecond lasers to demonstrate the first optical analogs of early two-dimensional NMR experiments. Our approach is now widely used to measure fast electronic and vibrational motions in disordered environments such as liquids, proteins, and semiconductors, but more work is needed to develop 2D spectroscopy as an analytical technique. We have used 2D femtosecond spectroscopy to probe the fastest electronic motions within molecules, the vibrations coupled to those motions, and the coupled motions of the environment. Topics of interest include electronic dynamics at "conical intersections" between electronic potential surfaces, surface enhanced Raman scattering on metallic nano-particles, high efficiency electronic energy transfer, hot carrier dynamics in semiconductor quantum dots, and other approaches to higher efficiency solar energy conversion.

Selected Publications

"Two-Dimensional Electronic Spectroscopy", John D. Hybl, Allison W. Albrecht, Sarah M. Gallagher Faeder, and David M. Jonas, Chemical Physics Letters 297, 307-313 (1998).

"Polar Solvation Dynamics in the Femtosecond Evolution of Two Dimensional Fourier Transform Spectra" John D. Hybl, Anchi Yu, Darcie A. Farrow, and David M. Jonas, Journal of Physical Chemistry A 106, 7651-7654 (2002).

"Two-Dimensional Femtosecond Spectroscopy" David M. Jonas, Annual Review of Physical Chemistry 54, 425-463 (2003).

"Optical Analogs of 2D NMR" David M. Jonas, Science 300, 1515-1517 (2003).

"Three-dimensional view of signal propagation in femtosecond four-wave mixing with application to the boxcars geometry", Nadia Belabas and David M. Jonas, Journal of the Optical Society of America B 22, 655-674 (2005).

"2D Correlation Analysis of the Continuum in Single Molecule Surface Enhanced Raman Spectroscopy", Amy A. Moore, Michele L. Jacobson, Nadia Belabas, Kathy L. Rowlen, David M. Jonas, Journal of the American Chemical Society 127, 7292-7293 (2005).

"Polarized Pump-Probe Measurements of Electronic Motion via a Conical Intersection" Darcie A. Farrow, Wei Qian, Eric R. Smith, Allison A. Ferro, and David M. Jonas, Journal of  Chemical Physics 128, 144510 (2008)

“Bulklike Hot Carrier Dynamics in Lead Sulfide Quantum Dots” Byungmoon Cho, William K. Peters, Robert J. Hill, Trevor L. Courtney, and David M. Jonas, Nano Letters, 10, 2498–2505 (2010)

“Electronic resonance with anticorrelated pigment vibrations drives photosynthetic energy transfer outside the adiabatic framework” Vivek Tiwari, William K. Peters, and David M. Jonas, Proceedings of the National Academy of Sciences of the USA 110, 1203-1208 (2013).

“Simultaneous All – Optical Determination of Molecular Concentration and Extinction Coefficient” Byungmoon Cho, Vivek Tiwari, and David M. Jonas, Analytical Chemistry 85, 5514-5521 (2013).