Browsing CHEM Faculty Scholarship by Title
Now showing items 425-444 of 496
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Structure-guided optimization of dipeptidyl inhibitors of Norovirus 3CL protease
(American Chemical Society, 2020-09-18)Acute gastroenteritis caused by noroviruses has a major impact on public health worldwide in terms of morbidity, mortality, and economic burden. The disease impacts most severely immunocompromised patients, the elderly, ... -
Studies on porphyrin-quinhydrone complexes: molecular recognition of quinone and hydroquinone in solution
(American Chemical Society, 2001-06-29)Free-base and zinc(II) porphyrins bearing either one, two, or four hydroquinone entities at the meso positions are shown to bind quinones in solutions via a quinhydrone pairing mechanism. Electrochemical studies reveal ... -
The study and application of biomolecules in deep eutectic solvents
(Royal Society of Chemistry, 2021-01)Biomolecules have been thoroughly investigated in a multitude of solvents historically in order to accentuate or modulate their superlative properties in an array of applications. Ionic liquids have been extensively explored ... -
A study of fragmentation of protonated amides of some acylated amino acids by tandem mass spectrometry: observation of an unusual nitrilium ion
(John Wiley and Sons, 2011-05-15)A tandem mass spectrometric study of a series of secondary amides of acetylglycine and hippuric acid utilizing electrospray ionization (ESI) was conducted. Among the fragment ions observed was an unusual one, which we have ... -
Study of photoinduced electron transfer of tris(phenothiazine) subphthalocyanine-fullerene pentad for light energy harvesting system
(American Chemical Society, 2014-03-16)Photo induced excitation and electron transfer to reaction center generate long lived charge separated state is the key step for natural photosynthesis process in green plants to harvest light energy. Well-arranged donor ... -
A study of the elimination of water from lithium-cationized tripeptide methyl esters by means of tandem mass spectrometry and isotope labeling
(John Wiley and Sons, 2006-01-01)Extensive isotope labeling (2H, 13C and 15N), collision-induced dissociation (CID) and multiple-stage tandem mass spectrometry were used to investigate the elimination of H2O from a series of model, metal-cationized ... -
Substituent effects in platinum(II) biphenyl bipyridine complexes
(American Chemical Society, 2014-03-16)Platinum(II) biphenyl bipyridine ligand complexes were found to exhibit emission from an excited state in the 600 nm region of the spectrum when excited in their metal-to-ligand charge transfer transition band located near ... -
Substituted 3-oxo-1,2,5-thiadiazolidine 1,1-dioxides: a new class of potential mechanism-based inhibitors of human leukocyte elastase and cathepsin G
(Elsevier, 1994-01-14)A series of substituted 3-oxo-1,2,5-thiadiazolidine 1,1-dioxides has been synthesized and their in vitro inhibitory activity toward human leukocyte elastase and cathepsin G was investigated. These compounds were found to ... -
Substrate specificity of ascorbate oxidase: unexpected similarity to the reduction site of dopamine beta-monooxygenase
(Elsevier, 1994-09-30)A series of ascorbate derivatives has been used to examine the specificity of the reduction site of ascorbate oxidase. Replacement of the 6-OH group of ascorbic acid with either hydrogen or bromine does not alter the ... -
Sulfamide and bis-sulfamide amino acid derivatives as inhibitors of proteolytic enzymes
(United States Patent and Trademark Office, 2002-12-17)Compounds of the general formula I are provided: ##STR1## and pharmaceutically acceptable salts thereof, wherein, Z is a chemical species or R.sub.i capable of binding at a primary specificity site of a protease; Y is a ... -
Supramolecular carbon nanotube-fullerene donor-acceptor hybrids for photoinduced electron transfer
(American Chemical Society, 2007-12-26)Photoinduced electron transfer in a self-assembled single-wall carbon nanotube (SWNT)-fullerene(C60) hybrid with SWNT acting as an electron donor and fullerene as an electron acceptor has been successfully demonstrated. ... -
Supramolecular complex composed of a covalently linked zinc porphyrin dimer and fulleropyrrolidine bearing two axially coordinating pyridine entities
(Royal Society of Chemistry, 2004-10-21)A zinc porphyrin dimer-fullerene supramolecular complex with a large association constant is assembled; efficient intramolecular photoinduced electron transfer from the singlet excited state of zinc porphyrin to the fullerene ... -
Supramolecular donor-acceptor hybrids of porphyrins/phthalocyanines with fullerenes/carbon nanotubes: electron transfer, sensing, switching, and catalytic applications
(Royal Society of Chemistry, 2009-09-07)Since the three-dimensional electron-accepting fullerene has been found to be an excellent building block for self-assembled supramolecular systems, we have investigated photoinduced electron transfer processes in ... -
Supramolecular porphyrin-fullerene via 'two-point' binding strategy: axial-coordination and cation-crown ether complexation
(Royal Society of Chemistry, 2005-03-14)A highly stable porphyrin-fullerene conjugate with defined distance and orientation, was formed using a newly developed 'two-point' binding strategy involving axial-coordination and cation-crown ether complexation; ... -
Supramolecular solar cells: surface modification of nanocrytalline TiO(2) with coordinating ligands to immobilize sensitizers and dyads via metal-ligand coordination for enhanced photocurrent generation
(American Chemical Society, 2009-10-21)An elegant method of self-assembly for modification of a TiO(2) surface using coordinating ligands followed by immobilization of variety of sensitizers and a dyad is reported. This highly versatile method, in addition to ... -
A Supramolecular tetrad featuring covalently linked ferrocene-zinc porphyrin-BODIPY coordinated to fullerene: a charge stabilizing, photosynthetic antenna-reaction center mimic
(WILEY-VCH Verlag GmbH & Co., 2014-12-15)A novel photosynthetic-antenna-reaction-center model compound, comprised of BF2-chelated dipyrromethene (BODIPY) as an energy-harvesting antenna, zinc porphyrin (ZnP) as the primary electron donor, ferrocene (Fc) as a ... -
Supramolecular triad and pentad composed of zinc-porphyrin(s), oxoporphyrinogen, and fullerene(s): design and electron-transfer studies
(John Wiley and Sons, 2007-01-01)By adopting a "covalent-coordinate" bonding approach, novel supramolecular pentad and triad molecules composed of zinc-porphyrin(s), fullerene(s), and oxoporphyrinogen redox-/photoactive entities have been constructed, and ... -
Syntheses and electrochemical, photophysical, and photochemical properties of Ruthenium(II) 4,5-Diazafluorenone complexes and their ketal derivatives
(ACS Publications, 1998-04-03)A series of ruthenium(II) complexes of the types [Ru(bpy)n(dafo)3-n]2+ and [Ru(bpy)n(dafo-ketal)3-n]2+, where n varies between 0 and 3 and dafo is 4,5-diazafluoren-9-one, were synthesized, and their chemical, physical, and ... -
Syntheses and excitation transfer studies of near-orthogonal freebase porphyrin-ruthenium phthalocyanine dyads and pentad
(American Chemical Society, 2012-03-19)A new series of molecular dyads and pentad featuring free-base porphyrin and ruthenium phthalocyanine have been synthesized and characterized. The synthetic strategy involved reacting free-base porphyrin functionalized ... -
Syntheses, electrochemistry, and photodynamics of ferrocene-azadipyrromethane donor--acceptor dyads and triads
(American Chemical Society, 2011-09-08)A near-IR-emitting sensitizer, boron-chelated tetraarylazadipyrromethane, has been utilized as an electron acceptor to synthesize a series of dyads and triads linked with a well-known electron donor, ferrocene. The structural ...