Zachary Schultz

Zachary Schultz

Zachary Schultz

Associate Professor

schultz.133@osu.edu

614-292-5775

3033C McPherson Laboratory
140 W 18th Ave
Columbus, OH 43210

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Areas of Expertise

  • Analytical

BIOGRAPHY

Zachary D. Schultz earned his B.S. in Chemistry from the Ohio State University in 2000 and Ph.D. in Chemistry from the University of Illinois at Urbana-Champaign in 2005. He performed his doctoral studies under the supervision of Prof. Andrew Gewirth using infrared-visible sum frequency generation spectroscopy to characterize electrochemical interfaces. Prof. Schultz was a National Research Council Postdoctoral Fellow at the National Institute of Standards and Technology (USA). His research at NIST was performed largely in collaboration with Ira Levin at the National Institutes of Health (USA). Following his postdoctoral training at NIST, Dr. Schultz continued as a research fellow with Dr. Levin at NIH using vibrational spectroscopy and microscopy to study biomembrane systems. Prof. Schultz began his independent career as an assistant professor of chemistry and biochemistry at the University of Notre Dame in 2009, and was promoted with tenure to associate professor in 2015. In January of 2018, Prof. Schultz moved his research program to Ohio State.  Prof. Schultz has been recognized as a Cottrell Scholar and is a Fellow of the American Association for the Advancement of Science.

RESEARCH OVERVIEW

In the Schultz Lab, we believe the new scientific breakthroughs will be enabled by state of the art chemical measurement. Our research focuses on developing new tools for identifying molecules relevant to biomedical diagnostics and other applications.  To do this, we build and develop instrumentation that takes advantage of chemical properties to characterize complex samples.  The interaction between lasers and molecules provides unique information for detecting and identifying the components in complex systems.  Understanding the basic science involved in chemical detection and manipulating these interactions has led to breakthrough technologies with tremendous potential.  We are actively pursuing problems in metabolomics, protein receptor signaling, and active plasmonics.

METABOLOMICS

The ability to specifically identify and quantify the 40,000+ metabolites in the human body is essential for a systems biology approach to health care.  Changes in biochemical pathways can be distinguished provided enough intermediate molecules can be monitored accurately.  Current technologies can identify about 20% of the in biological samples.  Our lab invented and is developing sheath-flow surface enhanced Raman scattering, which uses the unique pattern of scattered light associated with the structure of molecules, to improve molecular identification.  We combine Raman detection with capillary electrophoresis, liquid chromatography and other sampling techniques.  This methodology is orthogonal to existing technologies and should extend coverage of the number of detectable metabolites.  In addition to identifying specific metabolites, the chemical rich signal can provide an indicator of metabolic phenotype. Advances in instrumentation will enable new metabolomic methods for monitoring health and disease.

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PROTEIN RECEPTOR SIGNALING  

Proteins on the surface and embedded with cellular membranes are key to communicating environmental signals to the machinery within cells, and are thus often drug targets.  The ability to study the interaction of small molecules with receptors is a significant scientific challenge.  By combining nanomaterials and state of the art spectroscopy and microscopy techniques, such as atomic force microscopy and tip-enhanced Raman scattering (TERS), and most recently super-resolution SERS imaging, we are able to monitor chemical signals associated with molecules interacting with specific proteins in intact cells.  By developing new instrumentation and approaches, we aim to gain new understanding of how molecules interact with signaling proteins to improve drug targeting as well as further investigate the role of membrane proteins in disease. 

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ACTIVE PLASMONICS

Underlying all the problems we investigate is the basic science relevant to the signal enhancements incorporated into our measurements.  We are interested in understanding how nanomaterials with plasmonic properties interact with light, particularly with respect to how these properties alter the response from nearby molecules. This basic science serves as the basis for the development of future measurement techniques and other applications, such as photo-catalysts for CO2 reduction.  

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Selected Publications

de Albuquerque CDL, Schultz ZD. Super-resolution Surface-Enhanced Raman Scattering Imaging of Single Particles in Cells. Anal Chem. 2020;92(13):9389-98. doi: 10.1021/acs.analchem.0c01864.

Xiao L, Wang C, Dai C, Littlepage LE, Li J, Schultz ZD. Untargeted Tumor Metabolomics with Liquid Chromatography-Surface-Enhanced Raman Spectroscopy. Angewandte Chemie. 2020;59(9):3439-43. doi: 10.1002/anie.201912387

Sloan-Dennison S, Zoltowski CM, El-Khoury PZ, Schultz ZD. Surface Enhanced Raman Scattering Selectivity in Proteins Arises from Electron Capture and Resonant Enhancement of Radical Species. The Journal of Physical Chemistry C. 2020;124(17):9548-58. doi: 10.1021/acs.jpcc.0c01436.

Landaeta E, Masitas RA, Clarke TB, Rafacz S, Nelson DA, Isaacs M, Schultz ZD. Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO2 Reduction to Acetate at Low Overpotential. ACS Applied Nano Materials. 2020;3(4):3478-86. doi: 10.1021/acsanm.0c00210.

Sloan-Dennison S, Schultz ZD. Label-free plasmonic nanostar probes to illuminate in vitro membrane receptor recognition. Chemical Science. 2019;10(6):1807-15. doi: 10.1039/c8sc05035j

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