David Jonas

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.

"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).

“Bandgap Inhomogeneity of a PbSe Quantum Dot Ensemble from Two-Dimensional Spectroscopy and Comparison to Size Inhomogeneity from Electron Microscopy” Samuel D. Park, Dmitry Baranov, Jisu Ryu, Byungmoon Cho, Avik Halder, Sönke Seifert, Stefan Vajda,  and David M. Jonas, Nano Letters 17, 762–771 (2017).

“Nonadiabatic Eigenfunctions Can Have Conical Nodes", Peter W. Foster, William K. Peters, and David M. Jonas, Chemical Physics Letters 683, 268-275 (2017).

“Vibrational and Nonadiabatic Coherence in 2D Electronic Spectroscopy, the Jahn-Teller Effect, and Energy Transfer” David M. Jonas, Annual Review of Physical Chemistry 69, Ch. 13 – in press (2018).