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Omowunmi "Wunmi" Sadik
Professor of Bioanalytical, Materials  & Environmental Chemistry

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Chair, 1st Gordon Research Conferences on Environmental Nanotechnology



Department of Chemistry
State University of New York at Binghamton
Binghamton, NY 13902

Phone:  (607) 777-4132
Fax:     (607) 777-4478

Lab:     (607) 777-6392



  • Sabbatical, Harvard University (2003)
  • Senior Visiting Research Fellow, Cornell University, (2002)
  • Visiting Research Scientist, Naval Research Laboratories (2001)
  • NRC Postdoctoral Fellow, US-Environmental Protection Agency
  • Ph.D., University of Wollongong, Australia




A core objective of my research program is to understand the mechanism of the transduction of chemical information at interfaces, and to use this knowledge in the pursuit of innovative biosensing technologies, functional materials and devices. A sensor is a device that responds to physical, chemical or biological quantity, and converts that quantity into a signal or an output.  The driving force behind my biosensor research is the need to build sensor systems that quantitatively measure target species in a complex system. I have developed innovative biosensors for ultrasensitive detection of Staphylococci Enterotoxin B (SEB), biofilm, nucleic acids, pain biomarkers, oral proteins, E. coli, Bacillus globigii, chromium VI, polychlorinated biphenyls, environmental pollutants and toxic metals. Aside from biosensors, I have also established a world-class research in conducting polymers and biodegradable membranes. Examples include polyphenols, polyamic acid nanomembranes, polyoxy-dianilines, and sequestered metal nanoparticles within electroconducting polypyrrole. I have been recognized for my research and development of nano-bioanalytical detection platforms for environmental and biological monitoring. Our current sensors incorporate transducers that use complementary physical, chemical, and biological phenomena to measure orthogonal characteristics of chemical or biological species of interest.






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  • Francis J. Osonga, Idris Yazgan, Victor Kariuki, David Luther, Apryl Jimenez, Phuong Le & Omowunmi A. Sadik, Greener Synthesis and Characterization, Antimicrobial and Cytotoxicity Studies of Gold Nanoparticles of Novel Shapes and Sizes, RSC Advances, 2016, 6, 2302 – 2313.
  •  Kun Xiang, Yinglei Li, William Ford, Walker Land, David Schaffer, Robert Congdon, Omowunmi Sadik An Autonomous Microbial Cell Culture, Sensing and Classification System, Analyst 2015 (accepted).
  • Kariuki V., Yazgan I., Akgul A., Kowal A., Parlinska M., Sadik O. Synthesis, Catalytic and Biological Evaluation of Gold and Silver Nanoparticles using Poly(amic) Acid, Environmental Science: Nano, 2015, 2, 518 – 527.
  •  Idris Yazgan, Nian Du, Robert Congdon, Veronica Okello, Omowunmi A. Sadik, Journal of Membrane Science, 472(2014)261–271.
  •  Idris Yazgan, Naumih M. Noah, Ousmane Toure, Siyi Zhang and Omowunmi A. Sadik, Biosensors & Bioelectronics, 61, 266-273, 2014.
  • Sadik O. A., Du N., Kariuki V., Okello V., &   Bushlyar V., ACS Sustainable Chemistry & Engineering, 2, 1707-1716, 2014 .
  •  Veronica A. Okello, Samuel Gass, Georgios Pyrgiotakis, Nian Du, Andrew Lake, Victor Kariuki, Jessica Addolorato, Philip Demokritou & Omowunmi A. Sadik, Capture, Journal of Hazardous Materials, 279,  2014, 365-374.
  •  Veronica A. Okello, Ailing Zhou, Jane Chong, Michael T. Knipfing, David Doetschman & Omowunmi A. Sadik, Environmental Science & Technology, 46 (19),  10743–10751, 2012.
  •  Marcells Omole, Veronica Okello, Vincent Lee, Lisa Zhou and Omowunmi Sadik, ACS Catalysis, 1, 139-146, 2011.
  •  Kikandi S. K., Wong Q., Okello V., Sadik O. A., Varner V. E., Burns S., Environmental Science & Technology, 45(2), 5294-5300, 2011.
  • Du N., Wong C., Feurstein, M., Sadik O., Umbach C., Sammakia B., Langmuir, 26, 14194-14202, 2010.
  • Samuel K. Mwilu, Austin O. Aluoch,  Seth Miller,  Paula Wong & Omowunmi A. Sadik, Alim Fatah, Richard Arcilesi, Analytical Chemistry, 81, 7561-7570, 2009.
  • Sadik O. A., Zhou Ailing, Aluoch A., Biosensors & Bioelectronics, 24, 2749-2765, 2009.
  •  A. Zhou, S. Kikandi, O. A. Sadik, Electrochemistry Communications 9, 2247–2256, 2007.
  • Breimer M.,  Yevgheny E., Sadik O. A., Nano Letters, 1 (6), 305, 2001.

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The Sadik Group Acknowledges the following agencies for financial support.




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