A5036941968- Analytical Chemistry and Sensors
- Photochemistry and Electron Transfer Studies
- Phase Equilibria and Thermodynamics
- Analytical Chemistry and Chromatography
- Protein Interaction Studies and Fluorescence Analysis
- Spectroscopy and Quantum Chemical Studies
- Surfactants and Colloidal Systems
- Electrochemical sensors and biosensors
- Spectroscopy and Laser Applications
- Gas Sensing Nanomaterials and Sensors
- Molecular Sensors and Ion Detection
- Ionic liquids properties and applications
- Advanced Chemical Sensor Technologies
- Silicon Nanostructures and Photoluminescence
- Microfluidic and Capillary Electrophoresis Applications
- Advanced biosensing and bioanalysis techniques
- Nanowire Synthesis and Applications
- Advanced Fluorescence Microscopy Techniques
- Advanced Biosensing Techniques and Applications
- Ocular Surface and Contact Lens
- Mass Spectrometry Techniques and Applications
- Marine Biology and Environmental Chemistry
- Electrochemical Analysis and Applications
- Lanthanide and Transition Metal Complexes
- Analytical chemistry methods development
Kilimanjaro Christian Medical Centre
2021-2023
University at Buffalo, State University of New York
2011-2020
Buffalo Society of Natural Sciences
2015-2017
Buffalo State University
1999-2016
State University of New York
2004-2014
Buffalo BioLabs
2014
Goodyear (United States)
2012
Bausch & Lomb (France)
2012
New York University
2004-2010
Rochester Institute of Technology
2010
Fourier transform IR spectroscopy has been used to investigate the interaction of carbon dioxide with polymers. transmission and attenuated total reflectance spectra were obtained for CO2 impregnated into polymer films. It shown that polymers possessing electron-donating functional groups (e.g., carbonyl groups) exhibit specific interactions CO2, most probably Lewis acid−base nature. An unusual aspect is use bending mode (ν2) probe polymer−CO2 interactions. The evidence observation splitting...
Carbon dioxide in the liquid and supercritical fluid states is useful as a replacement for toxic organic solvents. However, nonvolatile hydrophilic substances such proteins, ions, most catalysts are insoluble. This limitation was overcome by formation of aqueous microemulsion droplets carbon dioxide-continuous phase with nontoxic ammonium carboxylate perfluoropolyether surfactant. Several spectroscopic techniques consistently indicated that properties approach those bulk water. The protein...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermodynamic study on the effects of .beta.-cyclodextrin inclusion with anilinonaphthalenesulfonatesGino C. Catena and Frank V. BrightCite this: Anal. Chem. 1989, 61, 8, 905–909Publication Date (Print):April 15, 1989Publication History Published online1 May 2002Published inissue 15 April 1989https://pubs.acs.org/doi/10.1021/ac00183a024https://doi.org/10.1021/ac00183a024research-articleACS PublicationsRequest reuse permissionsArticle...
Rhodamine photosensitizers (PSs) substituting S or Se for O in the xanthene ring give turnover numbers (TONs) as high 9000 generation of hydrogen via reduction water using [Co(III)(dmgH)(2)(py)Cl] (where dmgH = dimethylglyoximate and py pyridine) catalyst triethanolamine sacrificial electron donor. The frequencies were 0, 1700, 5500 mol H(2)/mol PS/h O, S, derivatives, respectively (Φ(H(2)) 0%, 12.2%, 32.8%, respectively), which correlates well with relative triplet yields estimated from...
Programmed self-assembly of well-defined molecular building blocks enables the fabrication precisely structured nanomaterials. In this work, we explore a new class giant polymeric surfactants (Mn = (0.7–4.4) × 106 g/mol) with bottlebrush architecture and show that their persistent shape leads to formation uniform aggregates in predictable manner. Amphiphilic block copolymers containing polylactide (PLA) poly(ethylene oxide) (PEO) side chains were synthesized by grafting-from method, aqueous...
Foul release coatings were first used on vessels in the early 1990s, but despite excitement about technology, they have had a prolonged modest market share due to high cost and poorer performance when compared biocidal marine coatings. Recently, these are experiencing renaissance. Accelerated progress based nanochemistry has enabled synthesis of ecofriendly with improved foul performance, also antifouling properties. This study aims provide an holistic overview research achievements that...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlucose Biosensor Based on a Sol-Gel-Derived PlatformUpvan. Narang, Paras N. Prasad, Frank V. Bright, Kumaran. Ramanathan, Deepak. Kumar, B. D. Malhotra, M. Kamalasanan, and Subhas. ChandraCite this: Anal. Chem. 1994, 66, 19, 3139–3144Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https://pubs.acs.org/doi/10.1021/ac00091a023https://doi.org/10.1021/ac00091a023research-articleACS...
As a result of heightened awareness wealth potential in clean manufacturing processes, room temperature ionic liquids (RTILs) have been the target increased investigation. an integral part green chemistry movement, RTILs found application synthesis, catalysis, polymerization, industrial cleaning, liquid/liquid extraction, and separations. While some groundwork has laid, optimal utilization tailoring these solvents hobbled by incomplete understanding their solvent properties, particularly at...
We report on the local microenvironment that surrounds three fluorescent solutes (i.e., cybotactic region) when they are dissolved in a 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) room-temperature ionic liquid as function of temperature and added CO2 (T = 308 K; P 0−150 bar). In dry [bmim][PF6] at 293 K, region exhibits dielectric constant refractive index 11.4 ± 1.0 1.523 0.025, respectively. The activation energy describes viscous flow is 38.4 0.9 kJ mol-1. for solute...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAffinity of antifluorescein antibodies encapsulated within a transparent sol-gel glassRun. Wang, Upvan. Narang, Paras N. Prasad, and Frank V. BrightCite this: Anal. Chem. 1993, 65, 19, 2671–2675Publication Date (Print):October 1, 1993Publication History Published online1 May 2002Published inissue 1 October 1993https://pubs.acs.org/doi/10.1021/ac00067a020https://doi.org/10.1021/ac00067a020research-articleACS PublicationsRequest reuse...
Biofouling on ships and boats, characterized by aquatic bacteria small organisms attaching to the hull, is an important global issue, since over 80000 tons of antifouling paint used annually. This biofilm, which can form in as little 48 hours depending water temperature, increases drag watercraft, greatly reduces their fuel efficiency. In addition, biofouling lead microbially induced corrosion (MIC) due H2S formed bacteria, especially sulfate-reducing bacteria.When International Maritime...
Carbon dots (C-dots) are often synthesized, modified, and studied as a mixture. Unfortunately, the spectroscopic biological properties measured for such C-dots assume that there is high degree of homogeneity in produced sample. By means high-resolution separation techniques, we show "as-synthesized" exist relatively complex mixture an unprecedented reduction complexity can reveal fractions with unique luminescence properties. The wavelength-dependent photoluminescence commonly assigned...
Novel O2-sensing materials based on spin-coated n-octyltriethoxysilane (Octyl-triEOS)/tetraethylorthosilane (TEOS) composite xerogel films have been synthesized and investigated. These sensors are the O2 quenching of tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) ([Ru(dpp)3]2+) sequestered within xerogels. Scanning electron microscopy luminescence measurements (steady state time resolved) used to investigate structure these their analytical figures merit determine underlying reasons for...
This paper presents a molecular design for two-photon absorbing structure, which contains two-dimensional architecture with four arms and one bridging unit, each of these segments having an extended π-conjugation capable producing absorption in different spectral ranges. Two chromophore units triphenylamine derivative dye, (N, N-di[4-{4-(5-[4-tert-butylphenyl]-1,3,4-oxadiazol-2-yl)styryl}phenyl]amino)benzene, were linked π-conjugated di-2-thienylethenylene unit to form new multibranched...
By using hybrid xerogels that are composed of alkyl and perfluoroalkyl ORMOSILs (organically modified silicates) doped with the luminophore tris(4,7'-diphenyl-1,10'-phenanthroline) ruthenium(II), we have produced highly sensitive O2 sensors (i.e., I(N2)/I(O2) = 35 +/- 4) linear calibration curves exhibit less than 2% drift over 6 months.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of aging on the dynamics rhodamine 6G in tetramethyl orthosilicate-derived sol-gelsUpvan Narang, Run Wang, Paras N. Prasad, and Frank V. BrightCite this: J. Phys. Chem. 1994, 98, 1, 17–22Publication Date (Print):January 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://pubs.acs.org/doi/10.1021/j100052a005https://doi.org/10.1021/j100052a005research-articleACS PublicationsRequest reuse...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRegenerable fiber-optic-based immunosensorFrank V. Bright, Thomas A. Betts, and Kevin S. LitwilerCite this: Anal. Chem. 1990, 62, 10, 1065–1069Publication Date (Print):May 15, 1990Publication History Published online1 May 2002Published inissue 15 1990https://pubs.acs.org/doi/10.1021/ac00209a019https://doi.org/10.1021/ac00209a019research-articleACS PublicationsRequest reuse permissionsArticle Views226Altmetric-Citations97LEARN ABOUT THESE...
Dendrimeric polyphenylsulfides, -selenides, and -tellurides are prepared in high yield using propyloxy spacers to connect the phenylchalcogeno groups dendrimeric core. The selenides tellurides catalyze oxidation of bromide with hydrogen peroxide give positive bromine species that can be captured by cyclohexene two-phase systems. corresponding sulfides show no catalytic activity. increase rate catalysis followed statistical effects for 1, 6, 12 phenyltelluro groups. However, exceeds...
We report new experimental data on the ability of a perfluoropolyether-based surfactant (PFPE) to form stable reverse micelles in supercritical CO2. Previous work from our groups showed that PFPE formed CO2 can host wide variety hydrophiles and even provide an environment capable solubilizing large proteins [Johnston, K. P.; Harrison, L.; Clarke, M. J.; Howdle, S. M.; Heitz, Bright, F. V.; Carlier, C.; Randolph, T. W. Science 1996, 271, 624−626]. In current we cloud point for CO2, X-band EPR...