Gary A. Baker
Associate Professor
102 Schlundt


BS, The State University of New York at Oswego, 1995
PhD, University at Buffalo, The State University of New York, 2001

Professional Experience: 

Associate Professor, University of Missouri-Columbia, 2017-present
Assistant Professor, University of Missouri-Columbia, 2011-2017
Research Scientist, Oak Ridge National Laboratory, 2005-2010
Postdoctoral Fellow, Los Alamos National Laboratory, 2001-2005

Honors and Awards
H-index: 69
Gold Chalk Award, Graduate Professional Council, 2020
Fuldner Faculty Fellow, MU Department of Chemistry, 2019 & 2020
Cottrell Scholar Award, 2015
Provost's Outstanding Junior Faculty Research and Creative Activity Award, 2015
George W. Thorn Award, University at Buffalo Distinguished Alumni Award, 2010
Presidential Early Career Award for Scientists and Engineers (PECASE), U.S. Department of Energy, 2008
Office of Science Outstanding Mentor Award, U.S. Department of Energy, 2007
Eugene P. Wigner Fellowship, Oak Ridge National Laboratory, 2005-2007
Frederick Reines Postdoctoral Fellowship, Los Alamos National Laboratory, 2002-2005
American Chemical Society Division of Analytical Chemistry Graduate Fellowship, 2000
Society for Applied Spectroscopy Graduate Student Award, 1999 


Deep eutectic solvents; Ionic liquids; Light-driven nanochemistry; Nanocatalysis; Nanoparticle-based theranostics 

Research in the Baker Group is highly cross-disciplinary and collaborative in nature and is motivated by problem-solving using sustainable nanoscience and task-specific solvent-engineering approaches.

Research in the Baker Group is highly cross-disciplinary and collaborative in nature and is motivated by problem-solving using sustainable nanoscience and task-specific solvent-engineering approaches. Examples of ongoing research projects include:

  • Benign-by-design solvents (ionic liquids, deep eutectic solvents, zwitterionic liquids)
  • Deep eutectic solvent media for nanochemistry
  • Functional synthetic nanoclays 
  • Fluorescent, theranostic, catalytic, and photoacoustic nanomaterials
  • Waste valorization (e.g., upcyling food waste to useful materials)
  • Diversity in education 

Women in Training for Science (WITS)
In partnership with Kathryn Fishman-Weaver—award-winning secondary gifted education teacher at Rock Bridge High School and Ph.D. student in Educational Leadership and Policy Analysis at the University of Missouri—we launched an outreach program in 2013 with the overarching goal of cultivating the talents of female students from the high school to graduate school level, with seminars, hands-on learning activities, laboratory experiences, supervised training, sibling proxy (“big sister”) mentorship, and internships designed to ignite and promote a lifelong interest in science and scientific careers. For general inquiries, or for those interesting in participating, please feel free to contact me at:

Select Publications

(chosen from a list of 300 articles; for a complete publication listing, please refer to my Google Scholar page)

Siegel, A. L., Baker, G. A. (2021) Bespoke Nanostars: Synthetic Strategies, Tactics, and Uses for Tailored Branched Gold Nanoparticles, Nanoscale Advances 7, in press. 

Larm, N., Adhikari, L., McKee, S., Baker, G. A. (2021) Polyionic Nanoclays: Tailorable Hybrid Organic-Inorganic Catalytic Platforms, Chem. Mater. 33, in press. 

Harris, M. A., Kinsey, T., Wagle, D. V., Baker, G. A., Sangoro, J. (2021) Evidence of a Liquid-Liquid Transition in a Glass-forming Ionic Liquid, Proc. Natl. Acad. Sci., in press.

Hansen, B. B., Spittle, S., Chen, B., Poe, D., Zhang, Y., Klein, J. M., Horton, A., Adhikari, L., Zelovich, T., Doherty, B. W., Gurkan, B., Maginn, E. J., Ragauskas, A., Dadmun, M., Zawodzinski, T. A., Baker, G. A., Tuckerman, M. E., Savinell, R. F., Sangoro, J. R. (2021) Deep Eutectic Solvents: A Review of Fundamentals and Applications, Chem. Rev. 121, 1232–1285. 

Kist, J. A., Zhao, H., Mitchell-Koch, K. R., Baker, G. A. (2021) The Study and Application of Biomolecules in Deep Eutectic Solvents, J. Mater. Chem. B 9, 536–566.  

Adhikari, L., Larm, N. E. and Baker, G. A. (2020) Batch and Flow Nanomanufacturing of Large Quantities of Colloidal Silver and Gold Nanocrystals Using Deep Eutectic Solvents, ACS Sustainable Chem. Eng. 8, 14679–14689.

Smith, C. J., Wagle, D. V., Bhawawet, N., Gehrke, S., Hollóczki, O., Pingali, S. V., O’Neill, H. and Baker, G. A. (2020) Combined Small-Angle Neutron Scattering, Diffusion NMR, and Molecular Dynamics Study of a Eutectogel: Illuminating the Dynamical Behavior of Glyceline Confined in Bacterial Cellulose Gels, J. Phys. Chem. B 35, 7647-7658.

Wagle, D. V., Kelley, S. P., Sikligar, K., Baker, G. A. and Atwood, J. L. (2020) An Indium‐Seamed Hexameric Metal–Organic Cage as an Example of a Hexameric Pyrogallol[4]arene Capsule Conjoined Exclusively by Trivalent Metal Ions, Angew. Chem. Int. Ed. 59, 8062-8065.  

Adhikari, L., Larm, N. E. and Baker, G. A. (2019) Argentous Deep Eutectic Solvent Approach for Scaling Up the Production of Colloidal Silver Nanocrystals, ACS Sustainable Chem. Eng. 7, 11036-11043.

Kist, J. A., Henzl, M. T., Bañuelos, J. L. and Baker, G. A. (2019) Calorimetric Evaluation of the Operational Thermal Stability of Ribonuclease A in Hydrated Deep Eutectic Solvents, ACS Sustainable Chem. Eng. 7, 12682-12687.

Larm, N. E., Thon, J. A., Vazmitsel, Y., Atwood, J. L. and Baker, G. A. (2019) Borohydride stabilized gold–silver bimetallic nanocatalysts for highly efficient 4-nitrophenol reduction, Nanoscale Adv. 1, 4665-4668. 

Larm, N. E., Bhawawet, N., Thon, J. A. and Baker, G. A. (2019) Best practices for reporting nanocatalytic performance: lessons learned from nitroarene reduction as a model reaction, New J. Chem. 43, 17932-17936.  

Larm, N. E., Madugula, D., Lee, M. W. and Baker, G. A. (2019) Polyhedral borane-capped coinage metal nanoparticles as high-performing catalysts for 4-nitrophenol reduction, Chem. Commun. 55, 7990-7993. 

Adhikari, L., Larm, N. E., Wagle, D. V., Atwood, J. L. and Baker, G. A. (2019) Facile, one-pot, in aqua synthesis of catalytically competent gold nanoparticles using pyrogallol[4]arene as the sole reagent, Chem. Commun. 55, 6261-6264. 

Essner, J. B., Kist, J. A., Polo-Parada, L. and Baker, G. A. (2018) Artifacts and errors associated with the ubiquitous presence of fluorescent impurities in carbon nanodots, Chem. Mater. 30, 1878-1887.

Adhikari, L., Larm, N. E., Bhawawet, N. and Baker, G. A. (2018) Rapid microwave-assisted synthesis of silver nanoparticles in a halide-free deep eutectic solvent, ACS Sustainable Chem. Eng, 6, 5725-5731.

Bhawawet, N., Essner, J. B., Atwood, J. L. and Baker, G. A. (2018) On the non-innocence of the imidazolium cation in a rapid microwave synthesis of oleylamine-capped gold nanoparticles in an ionic liquid, Chem. Commun. 54, 7523-7526. 

Wagle, D. V., Zhao, H., Deakyne, C. A. and Baker, G. A. (2018) Quantum chemical evaluation of deep eutectic solvents for the extractive desulfurization of fuel, ACS Sustainable Chem. Eng. 6, 7525-7531.

Phelps, T. E., Bhawawet, N., Jurisson, S. S. and Baker, G. A. (2018) Efficient and selective extraction of 99mTcO4– from aqueous media using hydrophobic deep eutectic solvents, ACS Sustainable Chem. Eng. 6, 13656-13661. 

Zhang, C., Sikligar, K., Patil, R. S., Barnes, C. L., Baker, G. A. and Atwood, J. L. (2018) A M18L6 metal–organic nanocapsule with open windows using mixed macrocycles, Chem. Commun. 54, 635-637.

Essner, J. B., Laber, C. H., and Baker, G. A. (2015) Effective size and optical tailoring of catalytic bimetallic nanoparticles generated from citric acid-derived carbon nanodots, J. Mater. Chem A3, 16354–16360. 

Wagle, D. V., Baker, G. A., and Mamontov, E. (2015) Differential microscopic mobility of components within a deep eutectic solvent, J. Phys. Chem. Lett.6, 2924-2928. 

Ravula, S., Essner, J. B., and Baker, G. A. (2015) Kitchen-inspired nanochemistry: dispersion, exfoliation, and hybridization of functional MoS2 nanosheets using culinary hydrocolloids, ChemNanoMat1, 167-177.

Ravula, S., Baker, S. N., Kamath, G., and Baker, G. A. (2015) Ionic liquid-assisted exfoliation and dispersion: stripping graphene and its two-dimensional layered inorganic counterparts of their inhibitions, Nanoscale 7, 4338-4353.

Ravula, S., Essner, J. B., La, W. A., Polo-Parada, L., Kargupta, R., Hull, G. J., Sengupta, S., and Baker, G. A. (2015) Sunlight-assisted route to antimicrobial plasmonic aminoclay catalysts, Nanoscale 7, 86-91. 

Wagle, D. V. and Baker, G. A. (2015) Cold welding: a phenomenon for spontaneous self healing and shape genesis at the nanoscale, Mater. Horiz. 2, 157-167.

Wagle, D. V., Zhao, H., and Baker, G. A. (2014) Deep eutectic solvents: sustainable media for nanoscale and functional materials, Acc. Chem. Res. 47, 2299-2308.

Pal, M., Rai, R., Yadav, A., Khanna, R., Baker, G. A., and Pandey, S. (2014) Self-aggregation of sodium dodecyl sulfate within (choline chloride + urea) deep eutectic solvent, Langmuir 30, 13191-13198.

Sze, L. L., Pandey, S., Ravula, S., Pandey, S., Zhao, H., Baker, G. A., and Baker, S. N. (2014) Ternary deep eutectic solvents tasked for carbon dioxide capture, ACS Sustainable Chem. Eng. 2, 2117-2123.

Chen, X., Essner, J. B., and Baker, G. A. (2014) Exploring luminescence-based temperature sensing using protein-passivated gold nanoclusters, Nanoscale 6, 9594-9598.

Ramirez-Perez, F. I., Gutiérrez-Juárez, G., Bok, S., Gangopadhyay, K., Gangopadhyay, S., Baker, G. A., and Polo-Parada, L. (2014) Dye-doped organosilicate nanoparticles as cell-preserving labels for photoacoustic signal generation, J. Biomed. Nanotechnol. 10, 3337-3350.

Hofmann, C. M., Essner, J. B., Baker, G. A., and Baker, S. N. (2014) Protein-templated gold nanoclusters sequestered within sol–gel thin films for the selective and ratiometric luminescence recognition of Hg2+Nanoscale 6, 5425-5431.

Xia, S., Baker, G. A., Li, H., Ravula, S., and Zhao, H. (2014) Aqueous ionic liquids and deep eutectic solvents for cellulosic biomass pretreatment and saccharification, RSC Adv. 4, 10586-10596.

Zhao, H., and Baker, G. A. (2013) Ionic liquids and deep eutectic solvents for biodiesel synthesis: a review, J. Chem. Technol. Biotechnol. 88, 3-12.

Fowler, D. A., Atwood, J. L., and Baker, G. A. (2013) Formation of a dimeric host–guest complex via binding between a dicationic ionic liquid and a pyrogallol[4]arene macrocycle, Chem. Commun. 49, 1802-1804.

Peñalber, C. Y., Baker, G. A., and Baldelli, S. (2013) Sum frequency generation spectroscopy of imidazolium-based ionic liquids with cyano-functionalized anions at the solid salt–liquid interface, J. Phys. Chem. B 117, 5939-5949.

Kaintz, A., Baker, G., Benesi, A., and Maroncelli, M. (2013) Solute diffusion in ionic liquids, NMR measurements and comparisons to conventional solvents, J. Phys. Chem. B 117, 11697-11708.

Chen, X., and Baker, G. A. (2013) Cholesterol determination using protein-templated fluorescent gold nanocluster probes, Analyst 138, 7299-7302.

Tang, S., Baker, G. A., and Zhao, H. (2012) Ether- and alcohol-functionalized task-specific ionic liquids: attractive properties and applications, Chem. Soc. Rev. 41, 4030-4066.

Trivedi, S., Pandey, S., Baker, S. N., and Baker, G. A. (2012) Pronounced hydrogen bonding giving rise to apparent probe hyperpolarity in ionic liquid mixtures with 2,2,2-trifluoroethanol, J. Phys. Chem. B 116, 1360-1369.

Tang, S., Baker, G. A., Ravula, S., Jones, J. E., and Zhao, H. (2012) PEG-functionalized ionic liquids for cellulose dissolution and saccharification, Green Chem. 14, 2922-2932.

Pandey, S., Baker, S. N., Pandey, S., and Baker, G. A. (2012) Optically responsive switchable ionic liquid for internally-referenced fluorescence monitoring and visual determination of carbon dioxide, Chem. Commun. 48, 7043-7045.

Liang, M., Kaintz, A., Baker, G. A., and Maroncelli, M. (2012) Bimolecular electron transfer in ionic liquids: Are reaction rates anomalously high?, J. Phys. Chem. B 116, 1370-1384.

Jordan, A. N., Das, S., Siraj, N., De Rooy, S. L., Li, M., El-Zahab, B., Chandler, L., Baker, G. A., and Warner, I. M. (2012) Anion-controlled morphologies and spectral features of cyanine-based nanoGUMBOS — an improved photosensitizer, Nanoscale 4, 5031-5038.

Li, S., Bañuelos, J. L., Guo, J., Anovitz, L., Rother, G., Shaw, R. W., Hillesheim, P. C., Dai, S., Baker, G. A., and Cummings, P. T. (2012) Alkyl chain length and temperature effects on structural properties of pyrrolidinium-based ionic liquids: a combined atomistic simulation and small-angle x-ray scattering study, J. Phys. Chem. Lett. 3, 125-130.

Al-Azzawi, O. M., Hofmann, C. M., Baker, G. A., and Baker, S. N. (2012) Nanosilica-supported polyethoxyamines as low-cost, reversible carbon dioxide sorbents, J. Colloid Interface Sci. 385, 154-159.

Bok, S., Korampally, V., Polo-Parada, L., Mamidi, V., Baker, G. A., Gangopadhyay, K., Folk, W. R., Dasgupta, P. K., and Gangopadhyay, S. (2012) Confeito-like assembly of organosilicate-caged fluorophores: ultrabright suprananoparticles for fluorescence imaging, Nanotechnology 23, 175601 (11pp).

Yung, K. Y., Schadock-Hewitt, A. J., Hunter, N. P., Bright, F. V., and Baker, G. A. (2011) 'Liquid litmus': chemosensory pH-responsive photonic ionic liquids, Chem. Commun. 47, 4775-4777.