Coordination Polymer
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Structural Invariance of a ZnII Coordination Polymer with 5-Aminoisophthalic Acid under Different Synthetic Conditions
A same coordination polymer [Zn(aip)(DMSO)] (aip: 5-aminoisophthalate and DMSO: dimethylsulfoxide) was synthesized using the same reactants (ZnSO4, aip and H2O/DMSO) but in different conditions, in which the stoichiometry (1:1-4:1 metal:ligand ratio), temperature (70 and 100 °C) and synthetic method (liquid-liquid diffusion, solvothermal and conventional wi
J. Braz. Chem. Soc.. Publicado em: 2017-11
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2. Improving the Electroluminescence of [Zn(salophen)(OH2)] in Polyfluorene-Based Light-Emitting Diode: The Role of Energy Transfer and Charge Recombination
Combining two or more different compounds with advantageous properties has been a useful and straightforward strategy in achieving a new class of materials with improved physical properties. This has been especially true for electronic polymers, whose optoelectronic properties can be completely tuned, and even improved, when mixed with other polymeric materi
J. Braz. Chem. Soc.. Publicado em: 2016-02
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3. ASSOCIATION OF BRANCHED POLYETHYLENE IMINE WITH SURFACTANTS IN AQUEOUS SOLUTION
Three polymer-surfactant systems comprised of branched polyethylene imine (PEI) with an anionic surfactant (sodium dodecylsulfate; SDS), a cationic surfactant (tetradecyltrimethylammonium bromide; TTAB), and a zwitterionic surfactant (
N -tetradecyl-N ,N -dimethyl-3-ammonio-1-propanesulfonate; SB3-14) were stQuím. Nova. Publicado em: 2015-07
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4. Estudo da viabilidade de incorporação dos fármacos ibuprofeno e naproxeno em um polímero de coordenação de cobre(II) / Study of the viability of incorporation of the drugs ibuprofen and naproxen into a copper(II) coordination polymer
Os avanços da tecnologia e das pesquisas científicas na área de fármacos crescem a cada ano, em busca de novas espécies com potencial terapêutico e da melhoria de medicamentos já consolidados, sendo a liberação sustentada uma das áreas mais relevantes. Polímeros de coordenação estão ganhando certo destaque como matrizes alternativas para carreg
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2012
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5. Síntese, caracterização e estudo das propriedades magnéticas de um polímero de coordenação contendo cobalto(II) e cobre(II)
This work describes the synthesis and characterization of two new compounds with ligand opy (N-(2-pyridyl)oxamate): the copper(II) precursor [Me4N]2[Cu(opy)2].5H2O and CoII CuII coordination polymer {[CoCu(opy)2]}n×4nH2O. This latter compound was obtained by reaction of [Me4N]2[Cu(opy)2].5H2O and CoCl2.6H2O in water. The heterobimetallic CoII CuII chain was
Quím. Nova. Publicado em: 2012
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6. DESENVOLVIMENTO E VALIDAÇÃO DE MÉTODO PARA DETERMINAÇÃO DE RESÍDUOS DE PESTICIDAS EM PLANTA MEDICINAL DESIDRATADA HYPTIS PECTINATA UTILIZANDO DMFS E CG/EM. / DEVELOPMENT AND VALIDATION OF METHODS FOR DETERMINATION OF PESTICIDE RESIDUES IN DRIED MEDICINAL PLANT HYPTIS PECTINATA DMFS AND USING GC / MS.
The Hyptis pectinata (L.) Poit is a medicinal plant widely used in the Sergipe state for the treatment of skin illnesses, gastric clutter, nasal congestion and inflammation caused for bacteria and fungi. Hyptis pectinata, as well as other medicinal plants, can be contaminated with pesticides that are used in the agriculture, and residues cause damages to the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/02/2011
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7. Development of luminescent systems based on PHB and PMMA polymers doped with rare earth complexes / Desenvolvimento de sistemas luminescentes à base dos polímeros PHB e PMMA dopados com complexos de terras raras
This work presents the preparation, characterization and studies of photoluminescence properties based on trivalent rare earth coordination complexes of βdiketonates and salicylates (β-diketonates = acac- and tta-; salicylates = Hsal- and RE3+ = Sm3+, Eu3+, Gd3+ and Tb3+) doped into polymers PHB (poly3hydroxybutyrate) and PMMA (polymethylmethacryla
Publicado em: 2009
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8. Synthesis and sintering of ZrO2 - 4,5%Y2O3 nanoparticles / Obtenção e sinterização de nanopartículas de ZrO2-4,5%Y2O3
The powders synthesis of yttria-stabilized zirconia by chemical methods has enabled the reduction in particle size for the submicrometer-sized scale. This reduction is to improve the electrical and mechanical responses of electrolyte fuel cells. Contributing in this research, this work was to study the effects of temperature elimination of organic phases, to
Publicado em: 2009
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9. Synthesis and Structural Analysis of new Coordination Polymer and molecular compounds of Phosphinatos Metals. / SÍNTESE E ANÁLISE ESTRUTURAL DE NOVOS POLÍMEROS DE COORDENAÇÃO E COMPOSTOS MOLECULARES DE FOSFINATOS METÁLICOS
In this work, the structures of coordination polymers and molecular compounds Cu(II), Hg(II), Pb(II) and Cd(II) with phenylphosphinate or diphenylphosphinate ligands were determined and are discussed. The reaction of phenylphosphinic or diphenylphosphinic acid with copper(II) acetate hydrate produces respectively aquaphenylphosphinate copper(II) or quadiphen
Publicado em: 2007
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10. SYNTHESIS AND CRYSTALCHEMISTRY OF 1-(4-CARBOXYPHENYL)-3-(4-ACETYLAMIDOPHENYL)TRIAZENE AND COMPLEXES OF COPPER(I), SILVER(I) AND GOLD(I) WITH 1-(4-ETHOXYCARBONYLPHENYL)-3-(4-NITROPHENYL)TRIAZENIDE LIGAND / SÍNTESE E CRISTALOQUÍMICA DO 1-(4-CARBOXIFENIL)-3-(4-ACETILAMIDOFENIL)TRIAZENO E COMPLEXOS DE COBRE(I), PRATA(I) E OURO(I) COM O LIGANTE 1-(4-NITROFENIL)-3-(4-ETOXICARBOXIFENIL)TRIAZENIDO
This work deals with the determination of the single crystal structure analysis of four triazenido complexes including gold(I), copper(I), silver(I), and the crystal structure of a free triazene molecule. Crystal data and refinement indices of 1-(4-carboxyphenyl)-3-(4- acetylamidophenyl)triazene (1) are: monoclinic system, space group P21/n, cell parameters
Publicado em: 2007
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11. Novel catalyst systems based on Ni(II), Ti(IV), and Cr(III) complexes for oligo-and polymerization of ethylene
The complex of Brookhart Ni(α-diimine)Cl2 (1) (α-diimine = 1,4-bis(2,6- diisopropylphenyl)-acenaphthenediimine) has been characterized after impregnation on silica (S1) and MAO-modified silicas (4.0, 8.0 and 23.0 wts.% Al/SiO2 called S2, S3 and S4, respectively). The treatment of these heterogeneous systems with MAO produces some active catalysts for the p
Publicado em: 2007
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12. Poli(oxido de etileno-co-epicloridrina) : degradação foto-oxidativa e termica, e blenda com polipropileno
Polymers derived from ethylene oxide and epichlorohydrin, like poly(epichlorohydrin-co-ethylene oxide) elastomer, are studied as polymer electrolyte for application in photo-electrochemical devices. These materiaIs present the ability to form complexes with alkali salts, presenting high ionic conductivity. In these devices the conversion of the solar energy
Publicado em: 2003