The Engel Group chooses problems at the interface of theory and experiment where we can test our understanding of excited state dynamics. We look for new design principles to control chemical reactivity, and we often find our inspiration in biological systems. We create new spectrometers of our own design to reveal new dynamics and new organizing principles for steering chemical reactivity. We approach our problems through a careful balance of synthesis, spectroscopy, theory, and biophysics.
M. Bednarz, J. Lapin, R. McGillicuddy, K.M. Pelzer, G.S. Engel, and G.B. Griffin, "Modeling Ultrafast Exciton Migration Within the Electron Donor Domains of Bulk Heterojunction Organic Photovoltaics" J. Phys. Chem. C, 121, 5467–5479 2017.
L. Wang, G.B. Griffin, A. Zhang, F. Zhai, N.E. Williams, R.F. Jordan, and G.S. Engel, "Controlling quantum-beating signals in 2D electronic spectra by packing synthetic heterodimers on single-walled carbon nanotubes" Nature Chemistry 9, 219–225 2017.
L. Wang, N.E. Williams, E.W. Malachosky, J.P. Otto, D. Hayes, R.E. Wood, P. Guyot-Sionnest, and G.S. Engel, "Scalable Ligand-Mediated Transport Synthesis of Organic-Inorganic Hybrid Perovskite Nanocrystals with Resolved Electronic Structure and Ultrafast Dynamics" ACS Nano, "Article ASAP"
Y. Zhang, A. Wirthwein, F.H. Alharbi, G.S. Engel, and S. Kais., "Dark states enhance the photocell power via phononic dissipation" Phys. Chem. Chem. Phys. 18, 31845-31849 2016.
M.A. Allodi, P.D. Dahlberg, R.J. Mazuski, H.C. Davis, J.P. Otto, and G.S. Engel, "Optical resonance imaging: An optical analog to MRI with sub-diffraction-limited capabilities" ACS Photonics 3, 2445–2452 2016.
C. Wang*, M.L. Flanagan*, R.D. McGillicuddy, H. Zheng, A.R. Ginzburg, X. Yang, K. Moffat, and G.S. Engel, "Bacteriophytochrome Photoisomerization Proceeds Homogeneously Despite Heterogeneity in Ground State" Biophysical Journal 111, 2125–2134 2016.