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Authors: Stela Pruneanu, Alexandru R. Biris, Florina Pogacean, Crina Socaci, Maria Coros, Marcela Rosu, Fumiya Watanabe, and Alexandru S. Biris Publication: Electrochimica Acta, Volume 154 Abstract: In this paper, we report on the preparation of gold electrodes modified with graphene-AuAg (Au/Gr-AuAg) or graphene-Au (Au/Gr-Au) composite materials as electrochemical sensors for dopamine (DA) detection. The response of the … The Influence of Uric and Ascorbic Acid on the Electrochemical Detection of Dopamine Using Graphene-modified Electrodes

Authors: Zeid A. Nima, Mohamed H. Lahiani, Fumiya Watanabe,  Yang Xu, Mariya V. Khodakovskaya, and  Alexandru S. Biris Publication: RSC Advances, Issue 4 Abstract: Multifunctional, plasmonically-active nanorods based on gold cores and silver shells (AuNR/Ag), after exposure to tomato plants, were found to be taken up in rather short times, being detected by SERS in both roots … Plasmonically Active Nanorods for Delivery of Bio-active Agents and High-Sensitivity SERS Detection in planta

Authors: Yashraj Gartia, Charlette M. Felton, Fumiya Watanabe, Peter Szwedo, Alexandru S. Biris, Nandan Kumar Peddi, Zeid A. Nima, and Anindya Ghosh Publication: ACS Sustainable Chemistry and Engineering, Issue 3, Volume 1 Abstract: A nanocomposite of a dichloro-amido-macrocyclic cobalt(III) complex (1) and graphene was developed and characterized using various microscopic and spectroscopic techniques such as X-ray photoelectron spectroscopy, transmission … Graphene-Enhanced Oxygen Reduction by MN4 Type Cobalt (III) Catalyst

Authors: Omar Abdulrazzaq, Shawn Bourdo, Viney Saini, Fumiya Watanabe, Bailey Barnes, Anindya Ghosh, and Alexandru S. Biris Publication: RSC Advances, Issue 5 Abstract: In this work, we present the first demonstration of tuning the work function of polyaniline by controlling the concentration level of camphorsulfonic acid as a protonic acid dopant and m-cresol as a solvent. Optical, … Tuning the Work Function of Polyaniline via Camphorsulfonic Acid: An X-ray Photoelectron Spectroscopy Investigation

Authors: Stela Pruneanu, Alexandru R. Biris, Florina Pogacean, Maria Coros, Ganesh K. Kannarpady, Fumiya Watanabe, and Alexandru S. Biris Publication: Electrochimica Acta, Volume 139 Abstract: Composite materials based on graphene and platinum nanoparticles (Gr-Pt-2 and Gr-Pt-3) were synthesized over two catalysts (Ptx/MgO, where x = 2 or 3 wt.%) using radio-frequency catalytic chemical vapor deposition (RF-CCVD), with methane as carbon … The Study of Adenine and Guanine Electrochemical Oxidation Using Electrodes Modified with Graphene-platinum Nanoparticles Composites

Authors: Punnamchandar Ramidi, Omar Abdulrazzaq, Charlette M. Felton, Yashraj Gartia,Viney Saini, Alexandru S. Biris, and Anindya Ghosh Publication: Energy Technology, Volume 2, Issue 7 Abstract: We present the successful synthesis of a modified poly(3-hexyl)thiophene (P3HT) donor polymer with benzophenone (P3HTB) substitution. The triplet-sensitizer (benzophenone)-containing polymer (P3HTB) was synthesized by the oxidative copolymerization of 3-hexylthiophene and benzopheneone-modified thiophene … Triplet Sensitizer Modification of Poly(3-hexyl)thiophene (P3HT) for Increased Efficiency in Bulk Heterojunction Photovoltaic Devices

Authors: Zeid A. Nima, Meena Mahmood, Yang Xu, Thikra Mustafa, Fumiya Watanabe, Dmitry A. Nedosekin, Mazen A. Juratli, Tariq Fahmi, Ekaterina I. Galanzha, John P. Nolan, Alexei G. Basnakian, Vladimir P. Zharov, and Alexandru S. Biris Publication: Scientific Reports, Volume 4 Abstract: Nanotechnology has been extensively explored for cancer diagnostics. However, the specificity of current methods to … Circulating Tumor Cells Identification by Functionalized Silver-Gold Nanorods with Multicolor, Super-Enhanced SERS and Photothermal Resonances

Authors: Anamaria Orza, Daniel Casciano, and Alexandru S. Biris Publication: Drug Metabolism Reviews, Volume 46, Issue 2 Abstract: Recent developments in cancer biology have identified the existence of a sub-poplulation of cells – cancer stem cells (CSC) that are resistant to most traditional therapies (e.g. chemotherapy and radiotherapy) and have the ability to repair their damaged DNA. These findings … Nanomaterials for Targeted Drug Delivery to Cancer Stem Cells

Authors: Marjolaine Rousseau, David E. Anderson, James D. Lillich, Michael D. Apley, Peder Jensen, and Alexandru S. Biris Publication: Journal of Veterinary Research, Volume 75, N0. 3 Abstract: Objective—To determine the response of cortical bone to a multicomponent and nanostructural polymeric matrix as a drug delivery system for enhancing bone healing.  

Authors: Yongbin Zhang, Dayton Petibone, Yang Xu, Meena Mahmood, Alokita Karmakar, Dan Casciano, Syed Ali, and Alexandru S. Biris Publication: Drug Metabolism Reviews, Volume 46, Issue 2 Abstract: Carbon-based nanomaterials have attracted great interest in biomedical applications such as advanced imaging, tissue regeneration, and drug or gene delivery. The toxicity of the carbon nanotubes and graphene remains … Toxicity and Efficacy of Carbon Nanotubes and Graphene: the Utility of Carbon-based Nanoparticles in Nanomedicine