Department of Chemistry

Emily Sprague-Klein

Assistant Professor of Chemistry
GeoChem 231
Research Interests Photo-electrochemistry and catalysis, Single nanoparticle optical spectroscopy, Vibrational spectroscopy, Optical/X-ray transient absorption spectroscopy, Surface science and soft nanomaterials

Biography

Research Statement 

Fundamental understanding of visible light-activated excited state chemistry is of great importance in elucidating the mechanisms, structures, and design features for catalysis, energy, and biomedicine.  Important chemical reactions such as CO2 reduction, water-splitting, and electron transfer in novel inorganic materials are revealed by spectroscopic probes of excited-state manifolds and charge transfer pathways leading to observable reaction intermediates or products.  The light-harvesting properties of these soft nanomaterials can be tuned through core-molecule-shell fabrication schemes that will alter the size, shape, and material composition to include both traditional plasmonic metals to earth abundant metal composites exhibiting novel plasmonic surface effects in the near ultraviolet to visible regime.  Modern optical spectroscopy techniques are then utilized to map out these dynamics across multiple timescales—from the seconds timescale of oxygen-evolving reactions to the ultrafast timescales of nuclear and vibrational motion with microscopic detail.  The Klein group aims to deepen our understanding and expand the scope of nanoscale photocatalysis by mapping dynamics in extreme interaction regimes for enhanced localized control over plasmon-driven chemistry.  More generally, we seek to address the challenges the world faces in renewable energy, photovoltaics, and nanomedicine by elucidating the fundamental photophysical and photochemical processes that underlie important light-driven chemical reactions in soft nanomaterials. 

Education 

  • 2018 – Ph.D.: Northwestern University 
  • 2012 – B.S.: University of Illinois at Urbana-Champaign

Publications

C. Shi*, S.-H. Kim, N. Warren, N. Guo, X. Zhang, Y. Wang, A. Willemsen, C. López-Pernía, Y. Liu, A. Kingon, H. Yan, Y. Zheng, M. Chen*, E. Sprague-Klein*, B. Sheldon*.  A Hierarchically Micro- and Nano-structured Polymer via Crystallinity Alteration for Sustainable Environmental Cooling," Langmuir, 2024, 40, 38, 20195–20203.
 
D. G. Schauer, J. Bredehoeft, U. Yunusa, A. Pattammattel, H. J. Wörner, E. A. Sprague-Klein*.  "Targeted synthesis of gold nanorods and characterization of their tailored surface properties using optical and X-ray spectroscopy," Phys. Chem. Chem. Phys., 2024, 26, 25581-25589. 
 
N. Guo, C. Shi*, N. Warren, E. A. Sprague-Klein, B. W. Sheldon, M. Chen*.  "Challenges and Opportunities for Passive Thermoregulation," Adv. Energy Mater. 2024, 14, 2401776.
 
U. Yunusa, N. Warren, D. Schauer, P. Srivastava, E. Sprague-Klein*. "Plasmon resonance dynamics and enhancement effects in Tris(bipyridine)ruthenium(II) gold nanosphere oligomers," Nanoscale, 2024, 16, 5601-5612. 
 
N. L. Warren, U. Yunusa, A. B. Singhal, E. A. Sprague-Klein*. "Facilitating Excited-State Plasmonics and Photochemical Reaction Dynamics," Chem. Phys. Rev., 2024, 5, 011307. 
 
 A. M. Potocny, B. T. Phelan, E. A. Sprague-Klein, M. W. Mara, D. M. Tiede, Lin X. Chen, K. L. Mulfort*. "Harnessing Intermolecular Interactions to Promote Long-Lived Photoinduced Charge Separation from Copper Phenanthroline Chromophores," Inorg. Chem., 2022, 61, 48, 19119–19133. 
 
 E. A. Sprague-Klein*, X. He, M. W. Mara, B. J. Reinhart, S. Lee, L. M. Utschig, K. L. Mulfort, L. X. Chen*, D. M. Tiede*. “Photo-Electrochemical Effect in the Water Oxidation Catalyst Cobalt-Phosphate (CoPi),” ACS Energy Lett., 2022, 7, 9, 3129–3138.  
 
E. A. Sprague-Klein, M. O. McAnally, D. V. Zhdanov, A. B. Zrimsek, V. A. Apkarian, T. Seideman, G. C. Schatz, and R. P. Van Duyne*, “Observation of Single Molecule Plasmon-Driven Electron Transfer in Isotopically Edited 4,4’-Bipyridine Gold Nanosphere Oligomers,” J. Am. Chem. Soc., 2017, 139, 15212-15221.