A5041250514- Porphyrin and Phthalocyanine Chemistry
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal-Catalyzed Oxygenation Mechanisms
- Magnetism in coordination complexes
- Crystallography and molecular interactions
- Oxidative Organic Chemistry Reactions
- Fluorine in Organic Chemistry
- Photodynamic Therapy Research Studies
- Photosynthetic Processes and Mechanisms
- Metal complexes synthesis and properties
- Fullerene Chemistry and Applications
- Analytical Chemistry and Sensors
- Photochemistry and Electron Transfer Studies
- Advanced Chemical Physics Studies
- Iron Metabolism and Disorders
- Organometallic Complex Synthesis and Catalysis
- Graphene research and applications
- Electrochemical sensors and biosensors
- Inorganic Fluorides and Related Compounds
- Nanoplatforms for cancer theranostics
- Conducting polymers and applications
- Supramolecular Chemistry and Complexes
- Porphyrin Metabolism and Disorders
- Transition Metal Oxide Nanomaterials
Seton Hall University
2014-2023
New Jersey Institute of Technology
2004-2011
Universitat de Barcelona
2006
Utah State University
2004-2005
Jackson State University
2005
Brown University
1998-2004
Western University
2003
University of New Hampshire
2002
Villanova University
2002
Stanford Synchrotron Radiation Lightsource
2001
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetostructural correlations in magnetically coupled (.mu.-oxo)diiron(III) complexesSergiu M. Gorun and Stephen J. LippardCite this: Inorg. Chem. 1991, 30, 7, 1625–1630Publication Date (Print):April 1, 1991Publication History Published online1 May 2002Published inissue 1 April 1991https://pubs.acs.org/doi/10.1021/ic00007a038https://doi.org/10.1021/ic00007a038research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of C60 and C70 clustersD. M. Cox, S. Behal, Disko, Gorun, Greaney, C. Hsu, E. B. Kollin, J. Millar, Robbins, Cite this: Am. Chem. Soc. 1991, 113, 8, 2940–2944Publication Date (Print):April 1, 1991Publication History Published online1 May 2002Published inissue 1 April 1991https://pubs.acs.org/doi/10.1021/ja00008a023https://doi.org/10.1021/ja00008a023research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProduction, spectroscopy and electronic structure of soluble fullerene ionsMark A. Greaney Sergiu M. GorunCite this: J. Phys. Chem. 1991, 95, 19, 7142–7144Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.org/doi/10.1021/j100172a012https://doi.org/10.1021/j100172a012research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and properties of an undecairon(III) oxo-hydroxo aggregate: approach to the polyiron core in ferritinSergiu M. Gorun, Georgia C. Papaefthymiou, Richard B. Frankel, Stephen J. LippardCite this: Am. Chem. Soc. 1987, 109, 11, 3337–3348Publication Date (Print):May 1, 1987Publication History Published online1 May 2002Published inissue 1...
Abstract Enzyme-based electrochemical biosensors are an inspiration for the development of (bio)analytical techniques. However, instability and reproducibility reactivity enzymes, combined with need chemical reagents sensing remain challenges construction useful devices. Here we present a strategy inspired by advantages enzymes photoelectrochemical sensing, namely integration aerobic photocatalysis analysis. The photosensitizer, bioinspired perfluorinated Zn phthalocyanine, generates...
The geometries and electronic structures of C60 its mono- through hexaanions, all which have been prepared in macroscopic quantities, are calculated using modern density functional techniques. Clear assignments the states, symmetries, Jahn−Teller distorted ions, difficult to determine experimentally, obtained. results compared with available experimental data, agreement is excellent. Our calculations predict not yet measured. Comparison previous theoretical work indicates that theory method...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and characterization of the tetranuclear iron(III) oxo complex [Fe4O2(BICOH)2(BICO)2(O2CPh)4]Cl2Sergiu M. Gorun Stephen J. LippardCite this: Inorg. Chem. 1988, 27, 1, 149–156Publication Date (Print):January 1988Publication History Published online1 May 2002Published inissue 1 January 1988https://pubs.acs.org/doi/10.1021/ic00274a030https://doi.org/10.1021/ic00274a030research-articleACS PublicationsRequest reuse...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and magnetic Moessbauer properties of mononuclear asymmetric, oxo-bridged trinuclear iron(III) complexes a new polyimidazole ligandSergiu M. Gorun, Georgia C. Papaefthymiou, Richard B. Frankel, Stephen J. LippardCite this: Am. Chem. Soc. 1987, 109, 14, 4244–4255Publication Date (Print):July 1, 1987Publication History Published online1 May 2002Published inissue 1 July...
The effect of introduction perfluoro alkyl groups into phthalocyanines, as evidenced by the spectroscopic properties 1,4,8,11,15,18,22,25-octa-fluoro-2,3,9,10,16,17,23,24-octa-perfluoro isopropyl zinc phthalocyanine, ZnF(64)Pc(-2) and its ring-reduced radical anion species, [ZnF(64)Pc(-3)](-), are reported. A combination UV-visible absorption magnetic circular dichroism (MCD) spectroscopy, ESI MALDI-TOF mass spectrometry, cyclic differential pulse voltammetry, complete theoretical...
Thin films of four-coordinated perfluoroalkyl-substituted phthalocyanines were prepared by physical vapor deposition. The electrochemical redox characteristics and simultaneous changes in the optical absorbance spectra (40−215 nm) contact with an aqueous LiCl electrolyte for charge compensation compared to results obtained molecules dissolved organic solvent. A positive shift potential first ring-centered reduction relative unsubstituted or perfluorinated was confirmed solutions clearly...
The design of self oxidation-resistant catalytic materials based on organic molecules, although advantageous due to the ability control their structures, is limited by presence labile C–H bonds. This mini review summarizes recent work aimed at first-row transition metal complexes a new class coordinating ligands, fluoroalkyl-substituted fluorophthalocyanines, R[Formula: see text]Pcs, ligands in which all, or majority bonds are replaced combination fluoro- and perfluoroalkyl groups yielding...
The first Mn L-edge absorption spectra of a metalloprotein are presented in this paper. Both reduced and superoxidized catalase have been examined by fluorescence-detected soft X-ray spectroscopy, their dramatically different. spectrum Mn(II)Mn(II) has interpreted ligand field atomic multiplet calculations comparison to model compound spectra. analysis finds 10 Dq value ∼1.1 eV, consistent with coordination predominately nitrogen oxygen donor ligands. For interpretation mixed valence...
The effects of peripheral substituents and axial ligands on the electronic structure properties iron phthalocyanine, H16PcFe, have been investigated using a DFT method. Substitution by electron-withdrawing fluorinated groups alters ground state H16PcFe gives rise to large changes in ionization potentials electron affinity. For six-coordinate adducts with acetone, H2O, pyridine, coordination two weak-field leads an intermediate-spin state, while strong-field make system diamagnetic....
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEstimation of magnetic exchange coupling constants in bridged dimer complexesJ. R. Hart, A. K. Rappe, S. M. Gorun, and T. H. UptonCite this: J. Phys. Chem. 1992, 96, 15, 6264–6269Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inissue 1 July 1992https://pubs.acs.org/doi/10.1021/j100194a032https://doi.org/10.1021/j100194a032research-articleACS PublicationsRequest reuse permissionsArticle...
Abstract No Absract.
Literature routes to di(imidazol-4-yl)methanol (1a) dinitrate and tri(imidazol-4-yl)methanol (2a) trihydrochloride were improved give 32 16% overall yields, respectively; but we failed synthesize bis-(1b) tris-(1-methylimidazol-4-yl)methanol (2b) by the methylation of corresponding N-methoxymethyl compounds (3; X= 2 3). Attempted 4-lithiation 1,2,5-protected imidazole (4a) with BuLi–TMEDA failed, giving after hydrolysis 1-methyl-5-trimethylsilylimidazole (4b); similar failures observed for...
F64Pc2Ln (1Ln, Ln = Tb or Lu) represent the first halogenated phthalocyanine double-decker lanthanide complexes, and 1Tb exhibits single-molecule magnet properties as revealed by solid-state magnetometry. The fluorine substituents of rings have a dramatic effect on redox namely, stabilization their reduced states. Electrochemical spectroelectrochemical measurements demonstrate that 1Tb–/2– 1Tb2–/3– couples exhibit reversibility 1Tb–, 1Tb2– 1Tb3– species may be prepared bulk electrolysis in...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTRe-engineering Enzyme-Model Active Sites: Reversible Binding of Dioxygen at Ambient Conditions by a Bioinspired Copper ComplexZhengbo Hu, Robert D. Williams, Dat Tran, Thomas G. Spiro, and Sergiu M. GorunView Author Information Department Chemistry, Brown University Providence, Rhode Island 02912 Princeton Princeton, New Jersey 08544 Cite this: J. Am. Chem. Soc. 2000, 122, 14, 3556–3557Publication Date (Web):March 24, 2000Publication History...
An enzyme-inspired phthalocyanine (Pc) complex [F64PcCo(acetone)2] is the first representative of a novel class robust homogeneous catalysts. This couples aryl and alkyl phosphanes with acetone to catalytically produce ylides (the structure shows ylide coordinated F64PcCo unit: F green, N blue, O red, C gray, P yellow) water under ambient conditions using only air, route that avoids classical use halogenated intermediates.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAb initio calculation of the magnetic exchange interactions in (.mu.-oxo)diiron(III) systems using a broken symmetry wave functionJ. R. Hart, A. K. Rappe, S. M. Gorun, and T. H. UptonCite this: Inorg. Chem. 1992, 31, 25, 5254–5259Publication Date (Print):December 1, 1992Publication History Published online1 May 2002Published inissue 1 December 1992https://pubs.acs.org/doi/10.1021/ic00051a017https://doi.org/10.1021/ic00051a017research-articleACS...
Zinc perfluoro-fluoroalkyl-phthalocyanine, synthesized in high yield, does not exhibit electron loss, aggregate solution, is photostable and produces 1O2 very quantum yields. Aerobic photo-oxygenation of an external substrate occurs without catalyst self-oxidation. The encapsulation a metal center refractory organic environment could guide the design other viable catalysts for oxygenation substrates either synthesis or oxidative destruction biological molecules, under reaction conditions...
The synthesis, crystal structure, and electronic properties of perfluoro-isopropyl-substituted perfluorophthalocyanine bearing a copper atom in the central cavity (F64PcCu) are reported. While most halogenated phthalocyanines do not exhibit long-term order sufficient to form large single crystals, this is case for F64PcCu. Its structure was determined by X-ray analysis linked electron paramagnetic resonance (EPR). findings corroborated density functional theory (DFT) computations, which...
The World Health Organization (WHO) model "List of Essential Medicines" includes among indispensable medicines antibacterials and pain migraine relievers. Monitoring their concentration in the environment, while challenging, is important context antibiotic resistance as well production highly toxic compounds via hydrolysis. Traditional detection methods such high-performance liquid chromatography (HPLC) or LC combined with tandem mass spectrometry UV-vis spectroscopy are time-consuming, have...