Başlık için Fizik Bölümü listeleme
Toplam kayıt 1178, listelenen: 758-777
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Phosphorus-nitrogen compounds: New spiro-cyclic phosphazene derivatives. Structure of 4 ',4 ',6 ',6 '-tetrachloro-3,4-dihydro-3-(3-methylpyridin-2-yl)-spiro-[1,3,2-benzoxazaphosphinine-2,2 '-(2 lambda(5),4 lambda(5),6 lambda(5)-cyclotriphosphazene)]. Part XII
(Elsevier Science BV, 2005)The condensation reactions of [N-[(2-hydroxyphenylmethyl)amino]-methylpyridines (5-8) with trimer, N3P3Cl6, have been afforded partially substituted novel spiro-cyclic phosphazene derivatives (9-12) (Scheme 1). Compounds ... -
Phosphorus-nitrogen compounds: Part 19. Syntheses, structural and electrochemical investigations, biological activities, and DNA interactions of new spirocyclic monoferrocenylcyclotriphosphazenes
(Pergamon-Elsevier Science LTD, 2010)The reactions of hexachlorocyclotriphosphazatriene, N3P3Cl6, with N-alkyl-N-ferrocenylmethylethylene diamines, FcCH(2)NH(CH2)(2)NHR1 [R-1 = Me (1) and Et (2)], and sodium [3-(N-ferrocenylmethylamino)-1-propanoxide] (3) ... -
Phosphorus-Nitrogen Compounds: Part 25. Syntheses, Spectroscopic, Structural and Electrochemical Investigations, Antimicrobial Activities, and Dna Interactions of Ferrocenyldiaminocyclotriphosphazenes
(Taylor & Francis LTD, 2013)The condensation reactions of hexachlorocyclotriphosphazene (N3P3Cl6) with mono (1 and 2) and bisferrocenyldiamines (3-5 and 7) resulted in the formation of tetrachloro mono- (8 and 9) and bisferrocenylspirocyclotriphosphazenes ... -
Phosphorus-nitrogen compounds: Part 26. Syntheses, spectroscopic and structural investigations, biological and cytotoxic activities, and DNA interactions of mono and bisferrocenylspirocyclotriphosphazenes
(Elsevier Science Sa, 2013)The condensation reactions of the tetrachloro mono (1 and 2) and bisferrocenylspirocyclotriphosphazenes (3-5) with 1,4-dioxa-8-azaspiro[4,5]decane (DASD) resulted in the formation of the partly and fully DASD-substituted ... -
Phosphorus-nitrogen compounds: Part 31. Syntheses, structural and stereogenic properties, in vitro cytotoxic and antimicrobial activities, and DNA interactions of bicyclotetraphosphazenes containing bulky side group
(Elsevier Science Sa, 2015)Hexachlorocyclotriphosphazene, N3P3Cl6, and octachlorocyclotetraphosphazene, N4P4Cl8, were reacted with K2N2O2 salt of symmetric tetradentate ligand to obtain spiro-bino-spiro [(sbs) (2)] and 2,6-spiro-ansa-spiro [(2,6-sas) ... -
Phosphorus-nitrogen compounds: Synthesis and spectral investigations on new spiro-cyclic phosphazene derivatives
(Pergamon-Elsevier Science LTD, 2007)The condensation reaction of {N-[(2-hydroxyphenylmethyl)amino]-4,6-dimethylpyridine} (2), which is a reduction product of 1, with trimer N3P3Cl6 affords partially a substituted spiro-cyclic phosphazene derivative (3). The ... -
Photochemistry of six- and five-membered-ring alpha,beta-unsaturated lactones in cryogenic matrices
(Wiley, 2008)The photochemistry of representative six and five-membered alpha,beta-unsaturated lactones [alpha-pyrone and some of its derivatives, including coumarin and 3-acetamidocoumarin, 2(SH)-furanone] isolated in cryogenic inert ... -
Photoisomerization and Photochemistry of Matrix-Isolated 3-Furaldehyde
(American Chemical Society, 2010)3-Furaldehyde (3FA) was isolated in an argon matrix at 12 K and studied using FTIR spectroscopy and quantum chemistry The molecule has two conformers with trans and cis orientation of the O=C-C=C dihedral angle At the ... -
A photoluminescent dinuclear silver(I) complex exhibits C-H center dot center dot center dot Ag close interactions and a new coordination mode of the pyridine-2,3-dicarboxylate
(Elsevier Science BV, 2011)In this study, a novel dinuclear Ag(I)-pyridine-2,3-dicarboxylate complex with 1,3-diaminopropane ligand (pda). [Ag(2)(mu-2,3-pydc)(2)(Hpda)(2)]center dot 2H(2)O (H(2)2,3-pydc = pyridine-2,3-dicarboxylic acid), has been ... -
Photophysics of novel coumarin-labeled depsipeptides in solution: sensing interactions with SDS micelle via TICT model
(Springer Wien, 2013)N-Acylbenzotriazoles enable the synthesis (69-92 % yield) of blue to green fluorescent coumarin-labeled depsidipeptides 8a-f (quantum yields 0.004-0.97) and depsitripeptides 12a-d (quantum yields 0.02-0.96). Detailed ... -
Photorotamerization of matrix-isolated acrylic acid revisited
(Amer Inst Physics, 2011)In this study, the conformational preferences and photochemistry of acrylic acid (AA, CH(2)=CHCOOH) monomer isolated in cryogenic argon and krypton matrices were interpreted, based on results of quantum chemical calculations. ... -
Photovoltaic solar cell properties of CdxZn1-xO films prepared by sol-gel method
(Pergamon-Elsevier Science LTD, 2009)CdxZn1-xO films have been deposited by sol-gel spin-coating method onto glass substrates. The Cd/Zn ratio in solution was changed from 0 to 1. Zinc acetate dehydrates, cadmium acetate dehydrates, 2-methoxyethanol and ... -
Physicochemical characterization of natural and Na+-, K +-, Ca2+-and Mg2+-modified clinoptilolite from gördes (Manisa, Turkey)
(2009)Physicochemical characterization of the natural solid-phase Gördes clinoptilolite and of the Na+-, K+-, Ca2+-and Mg2+-modified forms of the mineral (as obtained through ion-exchange) by batch methods, X-ray diffractometry ... -
Physicochemical Characterization of Natural and Na+-, K+-, Ca2+- and Mg2+-modified Clinoptilolite from Gordes (Manisa, Turkey)
(Multi-Science Publ Co LTD, 2009)Physicochemical characterization of the natural solid-phase Gordes clinoptilolite and of the Na+-, K+, Ca2+- and Mg2+-modified forms of the mineral (as obtained through ion-exchange) by batch methods, X-ray diffractometry ... -
Plane symmetric solutions of gravitational field equations in five dimensions
(2006)We present the effective field equations obtained from a generalized gravity action with Euler-Poincaré term and a cosmological constant in a D dimensional bulk space-time. A class of plane-symmetric solutions that describe ... -
Poly(ethylene dimethacrylate-glycidyl methacrylate) monolith as a stationary phase in dye-affinity chromatography
(American Chemical Society, 2004)Porous monolith was obtained by the bulk polymerization of ethylene dimethacrylate (EDMA) and glycidyl methacrylate (GMA) conducted in a glass tube. Poly(EDMA-GMA) monolith had a specific surface area of 98.7 m(2)/g. ... -
Poly(hydroxyethyl methacrylate-co-methacrylamidoalanine) membranes and their utilization as metal-chelate affinity adsorbents for lysozyme adsorption
(Vsp BV, 2002)Different adsorbents have been reported in the literature for protein purification. The authors have developed a novel and new approach to obtain high protein adsorption capacity utilizing a 2-methacrylamidoalanine-containing ... -
Poly(pyrrole-3-carboxylic acid)-modified pencil graphite electrode for the determination of serotonin in biological samples by adsorptive stripping voltammetry
(Elsevier Science Sa, 2015)In this study, we have focused on two subjects which are the preparation of a poly(pyrrole-3-carboxylicacid) modified pencil graphite electrode (p(P3CA)/PGE) and the development of a novel sensing strategy for the determination ... -
Polycrystalline indium-doped ZnO thin films: preparation and characterization
(Natl Inst Optoelectronics, 2008)Zinc oxide (ZnO) and indium-doped zinc oxide (20) thin films have been deposited onto glass substrates by the spray pyrolysis method. The variations of the structural, electrical and optical properties with the indium ... -
Polymer-clay nanocomposite iron traps based on intersurface ion-imprinting
(American Chemical Society, 2008)We combined the ion-imprinting technique and the binding ability of Fe3+ ions to organosmectite to create the inorgano-organo Fe3+ ions imprinted polymer-nanocomposite traps with the goal of preparing a solid phase that ...