Browsing Chemistry and Biochemistry by Title
Now showing items 452-471 of 680
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Photochemical and photophysical properties of ruthenium(II) bis-bipyridine bis-nitrile complexes: Photolability
(Elsevier, 2010-08-10)The electrochemical and photophysical properties of two bis-nitrilo ruthenium(II) complexes formulated as [Ru(bpy)2(L)2](PF6)2, where bpy is 2,2′-bipyridine and L is AN = CH3CN and sn = NC–CH2CH2–CN, have been investigated. ... -
Photochemical charge separation in closely positioned donor-boron dipyrrin-fullerene triads
(John Wiley and Sons, 2011-02-14)A series of molecular triads, composed of closely positioned boron dipyrrin-fullerene units, covalently linked to either an electron donor (donor(1) -acceptor(1) -acceptor(2) -type triads) or an energy donor (antenna-donor(1) ... -
Photochemical charge separation in supramolecular phthalocyanine-multifullerene conjugates assembled by crown ether-alkyl ammonium cation interactions
(American Chemical Society, 2010-10-21)Self-assembled phthalocyanine-multifullerene donor-acceptor conjugates have been formed by crown ether-ammonium cation dipole-ion binding strategy to probe the photochemical charge separation. To achieve this, phthalocyanine ... -
Photochemistry and photophysics of coordination compounds: rhenium
(Springer Berlin Heidelberg, 2007)This review describes recent advances in the photochemistry of complexes of the element rhenium. It covers not only fundamental chemistry but the recent applications of these complexes to supramolecular chemistry, carbon ... -
Photoinduced charge separation in three-layer supramolecular nanohybrids: fullerene-porphyrin-SWCNT
(Royal Society of Chemistry, 2012-12-14)Photoinduced charge separation processes of three-layer supramolecular hybrids, fullerene-porphyrin-SWCNT, which are constructed from semiconducting (7,6)- and (6,5)-enriched SWCNTs and self-assembled via pi-pi interacting ... -
Photoinduced electron transfer in a Watson-Crick base-paired, 2-aminopurine:uracil-C60 hydrogen bonding conjugate
(Royal Society of Chemistry, 2007-02-07)A fluorescent reporter molecule, 2-aminopurine was self-assembled via Watson-Crick base-pairing to a uracil appended fullerene to form a donor-acceptor conjugate; efficient photoinduced charge separation was confirmed by ... -
Photophysical, spectroscopic, and computational studies of a series of Re(I) tricarbonyl complexes containing 2,6-dimethylphenylisocyanide and 5- and 6-derivatized phenanthroline ligands
(American Chemical Society, 2005-04-04)The ligand 2,6-dimethylphenylisocyanide (CNx) forms six complexes of the formula [Re(CO)3(CNx)(L)]+, where L = 1,10-phenanthroline (1), 5-chloro-1,10-phenanthroline (2), 5-nitro-1,10-phenanthroline (3), 5-methyl-1,10-phe ... -
Photosynthetic antenna-reaction center mimicry: sequential energy- and electron transfer in a self-assembled supramolecular triad composed of boron dipyrrin, zinc porphyrin and fullerene
(American Chemical Society, 2009-07-30)A self-assembled supramolecular triad, a model to mimic the photochemical events of photosynthetic antenna-reaction center, viz., sequential energy and electron transfer, has been newly constructed and studied. Boron ... -
Photosynthetic reaction center mimicry of a "special pair" dimer linked to electron acceptors by a supramolecular approach: self-assembled cofacial zinc porphyrin dimer complexed with fullerene(s)
(John Wiley and Sons, 2007-01-01)Biomimetic bacterial photosynthetic reaction center complexes have been constructed using well-defined self-assembled supramolecular approaches. The "special pair" donor, a cofacial porphyrin dimer, was formed via potassium ... -
Photosynthetic reaction center mimicry: low reorganization energy driven charge stabilization in self-assembled cofacial zinc phthalocyanine dimer-fullerene conjugate
(American Chemical Society, 2009-07-01)By employing well-defined self-assembly methods, a biomimetic bacterial photosynthetic reaction center complex has been constructed, and photoinduced electron transfer originating in this supramolecular donor-acceptor ... -
Physical, photophysical and structural properties of ruthenium(II) complexes containing a tetradentate bipyridine ligand
(Royal Society of Chemistry, 2008-06-28)The focus of this report is the synthesis and properties of two new analogues of ruthenium(ii) tris-bipyridine, a monomer and dimer. The complexes contain the ligand 6,6'-(ethan-1,2-diyl)bis-2,2'-bipyridine (O-bpy) which ... -
Physico-chemical studies of interactions of water soluble brominated porphyrins with DNA
(Wichita State University. Graduate School., 2006-04-28) -
Plausible molecular mechanism for activation by fumarate and electron transfer of the dopamine beta-mono-oxygenase reaction
(American Chemical Society, 2002-10-01)A series of fumarate analogues has been used to explore the molecular mechanism of the activation of dopamine beta-mono-oxygenase by fumarate. Mesaconic acid (MA) and trans -glutaconic acid (TGA) both activate the enzyme ... -
Polymer nano-composite materials based on hyperbranched polymers in petroleum applications
(Wichita State University, 2021-04-02)The Petroleum sector is facing a wide variety of challenges in finding economically and safe solutions for the corrosion problem, in which a tremendous amount of different metals, especially carbon steel, are consumed as ... -
Polymeric biomaterials for wound healing applications: a comprehensive review
(Taylor and Francis Ltd., 2022-06-19)Chronic wounds have been a global health threat over the past few decades, requiring urgent medical and research attention. The factors delaying the wound-healing process include obesity, stress, microbial infection, aging, ... -
Polypyridyl complexes of uracil derivatives attached to 2,2 '-pyridyl
(American Chemical Society, 2018)Three ligands obtained by the condensation of 2,2'-pyridyl with 5,6-diaminouracil, 5,6-diamino-1-methyluracil and 5,6-diamino-1,3-dimethyluracil were synthesized and crystal structures of the uracil and di-Me ... -
Porphyrin molecules that selectively bind to the phosphatidylglycerol (PG) head group, a lipid found in bacterial membrane
(Wichita State University, 2019-04-26)Porphyrin molecules that selectively bind to the phosphatidylglycerol (PG) head group, a lipid found in bacterial membrane have been previously reported by our research group. A tetrakis-ammonium glycine picket porphyrin ... -
Potassium ion controlled switching of intra- to intermolecular electron transfer in crown ether appended free-base porphyrin-fullerene donor-acceptor systems
(American Chemical Society, 2006-04-06)Photoinduced electron transfer in intramolecularly interacting free-base porphyrin bearing one or four 18-crown-6 ether units at different positions of the porphyrin macrocycle periphery and pristine fullerene was investigated ... -
Potent and specific inhibition of human leukocyte elastase, cathepsin G and proteinase 3 by sulfone derivatives employing the 1,2,5-thiadiazolidin-3-one 1,1 dioxide scaffold
(Elsevier, 1998-06-01)This paper describes the results of structure-activity relationship studies in a series of heterocyclic mechanism-based inhibitors based on the 1,2,5-thiadiazolidin-3-one 1,1 dioxide scaffold I and capable of interacting ... -
Potent inhibition of enterovirus D68 and human rhinoviruses by dipeptidyl aldehydes and alpha-ketoamides
(Elsevier Ltd., 2016-01)Enterovirus D68 (EV-D68) is an emerging pathogen responsible for mild to severe respiratory infections that occur mostly in infants, children and teenagers. EV-D68, one of more than 100 non-polio enteroviruses, is acid-labile ...