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Omowunmi "Wunmi" Sadik

Distinguished Professor | New Jersey Institute of Technology


Omowunmi Sadik applies her knowledge of surface chemistry, chemical and biological sensors in healthcare, food safety and the environment.






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SMART Biosensors: A New Modality to Objectively Quantify Pain




Omowunmi Sadik seeks to develop innovative technologies for improving human health, food safety and the environment through her research into biological sensors, surface chemistry, electrochemistry and nanostructured conducting polymers.

She holds five patents for her work on biosensors and nanostructured membranes and her inventions drove changes in areas such as dentistry, pain management and counterterrorism.

At NJIT, she is a distinguished professor, chair of the Department of Chemistry and Environmental Science and director of the BioSmart Center.

Sadik is also an expert on COVID-19 in the realm of handheld, point-of-care, disease-sensing devices

She joined NJIT in 2019, after 23 years at SUNY Binghamton. She's from Nigeria.

Areas of Expertise (5)

Nanostructured Conducting Polymers

Chemical and Biological Sensors

Surface Chemistry



Accomplishments (6)

Sustainable Nanotechnology Award, Sustainable Nanotechnology Organization


Brian O'Connell Distinguished Fellow, University of Western Cape, South Africa


Jefferson Science Fellow, U.S. Department of State


Nigerian National Order of Merit, President of the Federal Republic of Nigeria


Sigma Xi Distinguished Lecturer, Sigma Xi


American Institute for Medical and Biomedical Engineering Fellow, American Institute for Medical and Biomedical Engineering


Education (3)

University of Wollongong: Ph.D., Chemistry 1994

University of Lagos: M.S., Chemistry 1987

University of Lagos: B.S., Chemistry 1985

Media Appearances (3)

In Situ with Wunmi Sadik

Chemistry World  online


The interdisciplinary innovator on moving beyond silos and communicating the real-world impact of chemistry

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The Connection Between Environmental Chemistry and COVID

NJ PBS: One-on-One with Steve Adubato  tv


Wunmi Sadik, distinguished professor and chair of the Department of Chemistry and Environmental Science at NJIT, discusses the development of biosensors to test COVID-19 and the importance of environmental chemistry during a pandemic.

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[Women’s History Month] Meet Omowunmi Sadik, inventor of biosensors that detect bombs

Face2Face Africa  online


Meet Omowunmi Sadik, the inventor of microelectrode biosensors that can detect foreign materials and can be used to spot drugs or explosives.

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Event Appearances (1)

SMART Biosensors: A New Modality to Objectively Quantify Pain

NIH Director’s Wednesday Afternoon Lecture Series  


Articles (5)

Mechanism of Interactions of dsDNA Binding with Apigenin and Its Sulfamate Derivatives Using Multispectroscopic, Voltammetric, and Molecular Docking Studies

ACS Omega

Simon Waihenya, Pelin Şenel, Francis J Osonga, Taner Erdoğan, Filiz Altay, Ayşegül Gölcü, Omowunmi A Sadik

2021 DNA binding investigations are critical for designing better pharmaceutical compounds since the binding of a compound to dsDNA in the minor groove is critical in drug discovery. Although only one in-vitro study on the DNA binding mode of apigenin (APG) has been conducted, there have been no electrochemical and theoretical studies reported. We hereby report the mechanism of binding interaction of APG and a new class of sulfonamide-modified flavonoids, apigenin disulfonamide (ADSAM) and apigenin trisulfonamide (ATSAM), with deoxyribonucleic acid (DNA).

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Greener One-Pot Synthesis of Gold Nanoparticle Glycoconjugates Using Functionalized Sugars

ACS Agricultural Science & Technology

Idris Yazgan, Francis J Osonga, Roland M Miller, Victor M Kariuki, Jing Zhang, Jun Feng, Zakiya Skeete, Heather Crapo, Jürgen Schulte, Omowunmi A Sadik

2021 Carbohydrates have been used to decorate metallic nanoparticles to form nanoglycoconjugates. However, the synthetic conditions typically require the utilization of increased temperatures and other reagents that negatively impact the stability of the conjugates. For the first time, this study is reporting the synthesis of gold–nanoparticle glycoconjugates (AuNP-GCs) in aqueous media at ambient temperatures.

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Novel quercetin and apigenin-acetamide derivatives: design, synthesis, characterization, biological evaluation and molecular docking studies

RSC Advances

Daniel Isika, Mustafa Çeşme, Francis J Osonga, Omowunmi A Sadik

2020 Flavonoids exhibit essential but limited biological properties which can be enhanced through chemical modifications. In this study, we designed, synthesized and characterized two novel flavonoid derivatives, quercetin penta-acetamide (1S3) and apigenin tri-acetamide (2S3).

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Size and Shape-Dependent Antimicrobial Activities of Silver and Gold Nanoparticles: A Model Study as Potential Fungicides


Francis J Osonga, Ali Akgul, Idris Yazgan, Ayfer Akgul, Gaddi B Eshun, Laura Sakhaee, Omowunmi A Sadik

2020 Plant-based pathogenic microbes hinder the yield and quality of food production. Plant diseases have caused an increase in food costs due to crop destruction. There is a need to develop novel methods that can target and mitigate pathogenic microbes. This study focuses on investigating the effects of luteolin tetraphosphate derived silver nanoparticles (LTP-AgNPs) and gold nanoparticles (LTP-AuNPs) as a therapeutic agent on the growth and expression of plant-based bacteria and fungi.

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Synthesis, characterization and antifungal activities of eco-friendly palladium nanoparticles†

RSC Advances

Francis J Osonga, Sanjay Kalra, Roland M Miller, Daniel Isika, Omowunmi A Sadik

2020 Palladium is a versatile catalyst, but the synthesis of palladium nanoparticles (PdNPs) is usually attained at a high temperature in the range of 160 °C to 200 °C using toxic reducing agents such as sodium borohydride. We report the synthesis of PdNPs using a low-cost and environmentally-friendly route at ambient temperatures.

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