A5069163002- Photochemistry and Electron Transfer Studies
- Metal complexes synthesis and properties
- Catalysis and Oxidation Reactions
- Electrochemical Analysis and Applications
- Mesoporous Materials and Catalysis
- Radical Photochemical Reactions
- Porphyrin and Phthalocyanine Chemistry
- CO2 Reduction Techniques and Catalysts
- Lanthanide and Transition Metal Complexes
- Iron oxide chemistry and applications
- Catalytic Processes in Materials Science
- Inorganic and Organometallic Chemistry
- Molecular Junctions and Nanostructures
- Magnetism in coordination complexes
- Analytical Chemistry and Sensors
- Electrocatalysts for Energy Conversion
- Glass properties and applications
- Surface Roughness and Optical Measurements
- Photonic Crystals and Applications
- Chemical Reactions and Mechanisms
- Synthesis and Catalytic Reactions
- Oxidative Organic Chemistry Reactions
- Organic Light-Emitting Diodes Research
- Surface Chemistry and Catalysis
- Electrochemical sensors and biosensors
Queens College, CUNY
2000-2019
The Graduate Center, CUNY
2007-2015
City University of New York
1985-2014
Queensborough Community College, CUNY
2009
Brooklyn College
2000-2008
Jackson State University
2008
Manhattan College
1998-2003
Central Glass and Ceramic Research Institute
2000
City College of New York
2000
Queens University of Charlotte
1998
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExcited state Ru(bipyr)32+ as an electron-transfer reductantHarry D. Gafney and Arthur W. AdamsonCite this: J. Am. Chem. Soc. 1972, 94, 23, 8238–8239Publication Date (Print):November 1, 1972Publication History Published online1 May 2002Published inissue 1 November 1972https://pubs.acs.org/doi/10.1021/ja00778a054https://doi.org/10.1021/ja00778a054research-articleACS PublicationsRequest reuse permissionsArticle Views1231Altmetric-Citations197LEARN...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic and electrochemical properties of the dimer tetrakis(2,2'-bipyridine)(.mu.-2,3-bis(2-pyridyl)pyrazine)diruthenium(II) its monomeric analogCarlos H. Braunstein, A. David Baker, Thomas C. Strekas, Harry D. GafneyCite this: Inorg. Chem. 1984, 23, 7, 857–864Publication Date (Print):March 1, 1984Publication History Published online1 May 2002Published inissue 1 March 1984https://doi.org/10.1021/ic00175a013RIGHTS & PERMISSIONSArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic and electrochemical properties of dimeric Ruthenium(II) diimine complexes determination their excited state redox propertiesYael Fuchs, Sonita Lofters, Thomas Dieter, Wei Shi, Robert Morgan, C. Strekas, Harry D. Gafney, A. David BakerCite this: J. Am. Chem. Soc. 1987, 109, 9, 2691–2697Publication Date (Print):April 1, 1987Publication History Published online1 May 2002Published inissue 1 April...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemiluminescence from the reaction of hydrated electron with tris(bipyridyl)ruthenium(III)John E. Martin, Edwin J. Hart, Arthur W. Adamson, Harry Gafney, and Jack HalpernCite this: Am. Chem. Soc. 1972, 94, 26, 9238–9240Publication Date (Print):December 1, 1972Publication History Published online1 May 2002Published inissue 1 December 1972https://pubs.acs.org/doi/10.1021/ja00781a051https://doi.org/10.1021/ja00781a051research-articleACS...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemistry of Fe(CO)5 adsorbed onto porous Vycor glassMichael S. Darsillo, Harry D. Gafney, and Michael PaquetteCite this: J. Am. Chem. Soc. 1987, 109, 11, 3275–3286Publication Date (Print):May 1, 1987Publication History Published online1 May 2002Published inissue 1 1987https://pubs.acs.org/doi/10.1021/ja00245a016https://doi.org/10.1021/ja00245a016research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTResonance Raman spectra of ruthenium(II) complexes bipyridine and substituted bipyridines: ground- excited-state propertiesAmitabha Basu, Harry D. Gafney, Thomas C. StrekasCite this: Inorg. Chem. 1982, 21, 6, 2231–2235Publication Date (Print):June 1, 1982Publication History Published online1 May 2002Published inissue 1 June 1982https://pubs.acs.org/doi/10.1021/ic00136a021https://doi.org/10.1021/ic00136a021research-articleACS PublicationsRequest...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical reaction of the azidopentaammineiridium(III) ion. Coordinated nitrene intermediateHarry D. Gafney, James L. Reed, and Fred. BasoloCite this: J. Am. Chem. Soc. 1973, 95, 24, 7998–8005Publication Date (Print):November 1, 1973Publication History Published online1 May 2002Published inissue 1 November 1973https://pubs.acs.org/doi/10.1021/ja00805a011https://doi.org/10.1021/ja00805a011research-articleACS PublicationsRequest reuse...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical reactions of the azidopentaamminerhodium(III) ion. Nitrene and redox reaction pathsJames L. Reed, Harry D. Gafney, Fred BasoloCite this: J. Am. Chem. Soc. 1974, 96, 5, 1363–1369Publication Date (Print):March 1, 1974Publication History Published online1 May 2002Published inissue 1 March 1974https://pubs.acs.org/doi/10.1021/ja00812a018https://doi.org/10.1021/ja00812a018research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical reactions of copper(II)-1,3-diketonate complexesRichard L. Lintvedt and Harry D. GafneyCite this: J. Am. Chem. Soc. 1971, 93, 7, 1623–1628Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Published inissue 1 April 1971https://pubs.acs.org/doi/10.1021/ja00736a009https://doi.org/10.1021/ja00736a009research-articleACS PublicationsRequest reuse permissionsArticle Views267Altmetric-Citations27LEARN ABOUT...
Singlet molecular oxygen [1O2 (1Δg)] is generated cleanly in aqueous solution upon irradiation of a heterogeneous complex, meso-tetra(N-methyl-4-pyridyl)porphine (1) adsorbed onto porous Vycor glass (PVG). The cationic photosensitizer 1 tightly binds PVG and gives stable material, which does not dissociate into the surrounding phase. production 1O2 was measured by monitoring time-resolved (1Δg) phosphorescence at 1270 nm. Indirect analysis generation also carried out with photooxidation...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuenching of tris(2,2'-bipyridine)ruthenium(II) (Ru(bpy)32+) ionically bound to porous Vycor glass by oxygen, nitrous oxide, and sulfur dioxideSteven Wolfgang Harry D. GafneyCite this: J. Phys. Chem. 1983, 87, 26, 5395–5401Publication Date (Print):December 1, 1983Publication History Published online1 May 2002Published inissue 1 December 1983https://pubs.acs.org/doi/10.1021/j150644a018https://doi.org/10.1021/j150644a018research-articleACS...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectral and photophysical properties of ruthenium(II) 2-(phenylazo)pyridine complexesSteven Wolfgang, Thomas C. Strekas, Harry D. Gafney, Ronald A. Krause, Kirsten KrauseCite this: Inorg. Chem. 1984, 23, 17, 2650–2655Publication Date (Print):August 1, 1984Publication History Published online1 May 2002Published inissue 1 August 1984https://pubs.acs.org/doi/10.1021/ic00185a021https://doi.org/10.1021/ic00185a021research-articleACS PublicationsRequest...
The present research focuses on the comparative investigation of acid–base surface properties (the isoelectric point, pHiep and point zero charge, pHpzc) one-dimensional TiO2 nanomaterials. Different nanomaterials, nanotubes (NTs) nanowires (NWs) were prepared by an alkaline hydrothermal synthesis procedure. structural synthesized nanomaterials investigated with high-resolution scanning electron microscopy (HR-SEM), transmission (TEM), (HR-TEM), atomic force (AFM), powder X-ray diffraction...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEnhanced excited-state basicities of coordinated bridging bis(diimines) (BL) in ruthenium complexes Ru(bpy)2(BL)2+ (bpy = 2,2'-bipyridine)William Hosek, Steven A. Tysoe, Harry D. Gafney, David Baker, and Thomas C. StrekasCite this: Inorg. Chem. 1989, 28, 7, 1228–1231Publication Date (Print):April 1, 1989Publication History Published online1 May 2002Published inissue 1 April...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced disproportionation of Ru(bpy)32+ on porous Vycor glassTheresa Kennelly, Harry D. Gafney, and Martin BraunCite this: J. Am. Chem. Soc. 1985, 107, 15, 4431–4440Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://pubs.acs.org/doi/10.1021/ja00301a011https://doi.org/10.1021/ja00301a011research-articleACS PublicationsRequest reuse permissionsArticle...
Ruthenium diimines are unique in their emissivity. Optical excitation with light of less than 500 nm leads to a strong emission the 600-700 range. All emissive ruthenium complexes appear undergo intersystem crossing from absorptive singlet metal-to-ligand charge-transfer (MLCT) state an triplet MLCT localized on lowest-energy metal-ligand pair. In contrast this currently accepted model, which single is populated and then equilibrates among other states based particular set conditions,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMeasurement of the rates electron-transfer reactions between tris(2,2'-bipyridine)ruthenium(3+) and tris(1,10-phenanthroline)cobalt(2+) or tris(2,2'-bipyridine)cobalt(2+) by flash photolysis techniquesRussell Berkoff, Kevin Krist, Harry D. GafneyCite this: Inorg. Chem. 1980, 19, 1, 1–7Publication Date (Print):January 1980Publication History Published online1 May 2002Published inissue 1 January...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced reduction of tris(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)iron(III)H. D. Gafney, R. L. Lintvedt, and I. S. JaworiwskyCite this: Inorg. Chem. 1970, 9, 7, 1728–1733Publication Date (Print):July 1, 1970Publication History Published online1 May 2002Published inissue 1 July 1970https://pubs.acs.org/doi/10.1021/ic50089a024https://doi.org/10.1021/ic50089a024research-articleACS PublicationsRequest reuse permissionsArticle...
Photoinduced reduction of CO2 by H2O occurs in nanoporous Vycor glass doped with tungsten oxides derived from 312 nm photolysis physisorbed W(CO)6. In polished forms Vycor, a hydrated precursor to monoclinic WO3 is formed, whereas the unpolished glass, and mixed valence that exhibit lower energy intervalence charge transfer (IVCT) transitions are formed. The relative amounts different oxide attributed structural differences between PVG. Chemisorption converts formic acid-like species,...
Pattern formation often reveals constituent nonlinear mechanisms of a complex system. Here, we study self-synchronizing, light-induced thermal cycles in plasmonically absorbing nanofluids, whose anomalous thermal, optomechanical, electrochemical, and hydrodynamic responses are not yet well understood. We show that the oscillatory behavior—caused by light grazing nanofluid meniscus—exhibits strong dependence on hydrogen bonding solvent environment there low-intensity optical thresholds...
X-ray absorption above the Cr K edge has been used to study two Cr-doped olivine-structure materials. For Mg2SiO4, extended fine structure shows that resides in octahedral and tetrahedral sites with Cr–O distances of 1.98±0.03 1.68±0.03 Å, while near indicates is 3+ 4+ oxidation states. Ca2GeO4, site-size constraints limit site a distance 1.745±0.02 this only state. This illustrates utility x-ray for probing relating states constituent elements. In specific case olivine hosts, such...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT2,2':4,4'':4',4'''-Quaterpyridyl: a building block for the preparation of novel redox reagents. 2. Bis(2,2'-bipyridine)ruthenium(II) complexesKaren Bierig, Robert J. Morgan, Steven Tysoe, Harry D. Gafney, Thomas C. Strekas, and A. David BakerCite this: Inorg. Chem. 1991, 30, 26, 4898–4903Publication Date (Print):December 1, 1991Publication History Published online1 May 2002Published inissue 1 December...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectral and photophysical properties of Ru(bpy)32+ adsorbed onto porous Vycor glassShi Wei, Steven Wolfgang, Thomas C. Strekas, Harry D. GafneyCite this: J. Phys. Chem. 1985, 89, 6, 974–978Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published inissue 1 March 1985https://pubs.acs.org/doi/10.1021/j100252a017https://doi.org/10.1021/j100252a017research-articleACS PublicationsRequest reuse permissionsArticle...