Relevant bibliographies by topics / Zn(II)

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  1. Journal articles
  2. Dissertations / Theses
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  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Zn(II)'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Zn(II)"

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Kimura, Eiichi, Tohru Koike, and Takeshi Shiota. "Zn(II)-metalloenzyme models by Zn(II)-macrocyclic polyamine complexes." Journal of Inorganic Biochemistry 36, no. 3-4 (August 1989): 305. http://dx.doi.org/10.1016/0162-0134(89)84464-2.

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Kandegedara, Ashoka, Saravanamuthu Thiyagarajan, Kalyan C. Kondapalli, Timothy L. Stemmler, and Barry P. Rosen. "Role of Bound Zn(II) in the CadC Cd(II)/Pb(II)/Zn(II)-responsive Repressor." Journal of Biological Chemistry 284, no. 22 (March 13, 2009): 14958–65. http://dx.doi.org/10.1074/jbc.m809179200.

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Chu, Qinghui, Doug A. Medvetz, Matthew J. Panzner, and Yi Pang. "A fluorescent bis(benzoxazole) ligand: Toward binuclear Zn(II)–Zn(ii) assembly." Dalton Transactions 39, no. 22 (2010): 5254. http://dx.doi.org/10.1039/c000989j.

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Peña, M. J., A. Arevalillo, I. Rucandio, and J. S. Jiménez. "Complex species of Zn(II) and Cu(II) in tris buffer solutions—I. Zn(II)." Electrochimica Acta 35, no. 3 (March 1990): 673–77. http://dx.doi.org/10.1016/0013-4686(90)87059-b.

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Santosa, Sri Juari, Narsito Narsito, and Aldes Lesbani. "SORPTION-DESORPTION MECHANISM OF Zn(II) AND Cd(II) ON CHITIN." Indonesian Journal of Chemistry 6, no. 1 (June 13, 2010): 47–51. http://dx.doi.org/10.22146/ijc.21772.

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This study reports the results of the elucidation of the sorption-desorption mechanism of Zn(II) and Cd(II) on chitin through the determination of capacity, energy, and rate constant of sorption as well as the investigation of their desorption properties in NaCl and Na2EDTA solutions. The chitin was isolated through deproteination followed by demineralization of crab (Portunus pelagicus Linn) shell using NaOH solutions. The sorption of both metal ions followed the Langmuir isotherm model, resulting the sorption capacities of 3.2 x 10-4 and 2.8 x 10-4 mol g-1 for Zn(II) and Cd(II), respectively, and sorption energies of 15.1 kJ mol-1 for Zn(II) and 17.9 kJ mol-1 for Cd(II). It was also observed that Zn(II) was sorbed slightly faster than Cd(II) with first order sorption rate constants of 2.82 x 10-3 min-1 for Zn(II) and 2.61 x 10-3 min-1 for Cd(II). The result of the desorption experiment showed that Cd(II) and especially Zn(II) could only be exchanged by Na(I) after desorbing those metal ions by strong chelating agent of EDTA2-. The easier desorption of Zn(II) than Cd(II) by EDTA2- must be attributed by the smaller sorption energy of Zn(II) and by harder acid property of Zn(II) than Cd(II) as EDTA2- contained hard electron donor elements. Keywords: sorption, desorption, chitin, Zn(II), Cd(II)
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Sobianowska-Turek, Agnieszka, Katarzyna Grudniewska, Paweł Maciejewski, and Małgorzata Gawlik-Kobylińska. "Removal of Zn(II) and Mn(II) by Ion Flotation from Aqueous Solutions Derived from Zn-C and Zn-Mn(II) Batteries Leaching." Energies 14, no. 5 (March 1, 2021): 1335. http://dx.doi.org/10.3390/en14051335.

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The Zn(II) and Mn(II) removal by an ion flotation process from model and real dilute aqueous solutions derived from waste batteries was studied in this work. The research aimed to determine optimal conditions for the removal of Zn(II) and Mn(II) from aqueous solutions after acidic leaching of Zn-C and Zn-Mn waste batteries. The ion flotation process was carried out at ambient temperature and atmospheric pressure. Two organic compounds used as collectors were applied, i.e., m-dodecylphosphoric acid 32 and m-tetradecylphosphoric 33 acid in the presence of a non-ionic foaming agent (Triton X-100, 29). It was found that both compounds can be used as collectors in the ion flotation for Zn(II) and Mn(II) removal process. Process parameters for Zn(II) and Mn(II) flotation have been established for collective or selective removal metals, e.g., good selectivity coefficients equal to 29.2 for Zn(II) over Mn(II) was achieved for a 10 min process using collector 32 in the presence of foaming agent 29 at pH = 9.0.
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Limphong, Pattraranee, Ross M. McKinney, Nicole E. Adams, Brian Bennett, Christopher A. Makaroff, Thusitha Gunasekera, and Michael W. Crowder. "Human Glyoxalase II Contains an Fe(II)Zn(II) Center but Is Active as a Mononuclear Zn(II) Enzyme." Biochemistry 48, no. 23 (June 16, 2009): 5426–34. http://dx.doi.org/10.1021/bi9001375.

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Blencowe, Dayle K., and Andrew P. Morby. "Zn(II) metabolism in prokaryotes." FEMS Microbiology Reviews 27, no. 2-3 (June 2003): 291–311. http://dx.doi.org/10.1016/s0168-6445(03)00041-x.

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Trojan, Miroslav, and Petra Šulcová. "The binary Cd(II)-Zn(II) cyclo-tetraphosphates." Thermochimica Acta 343, no. 1-2 (January 2000): 135–38. http://dx.doi.org/10.1016/s0040-6031(99)00340-8.

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Buhani, Buhani, and Suharso Suharso. "THE INFLUENCE OF pH TOWARDS MULTIPLE METAL ION ADSORPTION OF Cu(II), Zn(II), Mn(II), AND Fe(II) ON HUMIC ACID." Indonesian Journal of Chemistry 6, no. 1 (June 13, 2010): 43–46. http://dx.doi.org/10.22146/ijc.21771.

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Multiple metal ions adsorption of Cu(II), Zn(II), Mn(II) and Fe(II) on humic acid with a batch method has been carried out at pH interaction of 3, 5, and 6. Concentration of metal ions in solution before and after interaction was analyzed with Atomic Absorption Spectrophotometer (AAS). Result showed that adsorption multiple metal ions of Cu(II), Zn(II), Mn(II), and Fe(II) on humic acid is optimum at pH 5. Adsorption energies of the multiple metal ions Cu(II), Zn(II), Mn(II), and Fe(II) on humic acid at pH 3, 5, and 6 are around 35.0 - 37.6 kJ/mole. In general, capacity of competition adsorption of the multiple metal ions has an order as follows; Cu(II) < Fe(II) < Zn(II) < Mn(II). Keywords: Humic acid, adsorption, multiple metal
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Dissertations / Theses on the topic "Zn(II)"

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Cowling, Frances Natalie. "Phenolate and phenylthiolate ligand complexes containing Zn(II), Ni(II) and Cu(II)." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/47543/.

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Chapter 1 provides an introduction to metalloenzymes and discusses Ni-containing superoxide dismutase (NiSOD), which features Ni-thiolate ligation at the active site, and Cu containing galactose oxidase, which utilises phenoxyl radicals to perform its catalytic function. Studies concerning low molecular weight analogue complexes of each active site are reviewed and their relevance with respect to enzyme structure and function is discussed. Chapter 1 concludes with a description of the aims of this thesis project. Chapter 2 discusses of the preparation of a series of Zn(II), Ni(II) and Cu(II) Schiff-base diphenolate complexes incorporating the four novel pentadentate pro-ligands, [H2tBuLOH], [H2tBuLOCl], [H2tBuLOtBu] and [H2tBuLOOMe]. The different pKa values of the para-substituted arylamines (H, Cl, tBu and OMe) appear to modulate the electrochemical properties and redox behaviour of the Zn(II), Ni(II) and Cu(II) diphenolate complexes. Cyclic voltammetric, spectroelectrochemical and EPR spectroscopic studies reveal the first oxidation processes of [Zn(tBuLOOMe)]and[Cu(tBuLOOMe)]are associated with ligand-based oxidation processes, yielding kinetically inert species possessing phenoxyl radical character. Conversely, the first oxidation process of [Ni(tBuLOOMe)] appears to be metal-based. Chapter 3 discusses of the syntheses of Schiff-base diphenolate and dithiolate complexes with a diamine bridge that incorporate pendant heterocyclic groups, with the potential to coordinate in an axial position to a metal centre that possess equatorial N2O2 or N2S2 coordination environments. We targeted the syntheses and characterisations of these complexes as analogues of the active site of NiSOD.Initial attempts to synthesise a diamine incorporating a pendant imidazole donor followed previously established synthetic approaches. The use of protecting groups to protect the NH group of the imidazole ring was unsuccessful. The syntheses of Ni(II) Schiff-base diphenolate and dithiolate complexes was attempted by using the pro-ligands, [H2tBuLOOH]and [H2tBuLSOH]and a post complexation step that involved a reaction of the OHpendant of the Schiff-base ligand with an aromatic or heterocyclic functionalised acid chloride. Functionalisations of the [Ni(tBuLOOH)]and [Ni(tBuLSOH)]to incorporatependant imidazole (Imid), pyridyl (PyN), furan (Fu) and pyrrole (Pyr) yielded crude products and attempts to purify these products proved unsuccessful.[Ni(tBuLOPh)]could be isolated and X-ray crystallographic studies of [Ni(tBuLOR)] (R = OH and Ph) and [Ni(tBuLSOH)] demonstrate that each centre adopts an approximate square planar geometry. Electrochemical investigations of [Ni(tBuLOR)] (R = OH, Ph)and[Ni(tBuLSOH)] showed that each exhibit irreversible redox processes and demonstrate that the OH and phenyl ester functionalities pendant to the ligand backbone do not stabilize theproducts formed following the oxidation of [Ni(tBuLOR)] (R = OH, Ph)and[Ni(tBuLSOH)]. Chapter 4 extends the research described in Chapter 3 through the synthesis of [Zn(tBuLOOH)] and [Cu(tBuLOOH)] and the attempted functionalisation of the OH group in these complexes to incorporate additionalpendant heterocyclic groups including imidazole(Imid), pyridyl (PyN), furan (Fu) and pyrrole (Pyr) together with phenyl (Ph). X-ray crystallographic studies show that [Cu(tBuLOOH)] possesses an approximately square planar coordination geometry with the metal centre bound by diimine and diphenolate donors. The frozen solution X-band EPR spectra of [Cu(tBuLOR)] (R =Ph, PyN, Fu, Pyr and Imid) are similar to one another and confirm each complex possesses a paramagnetic Cu(II) S = ½ d9 metal centre. The similarity between each EPR spectrum as R is varied suggests that the functional group pendant to the ligand backbonedoes not interact greatly with Cu (II) centre in [Cu(tBuLOR)]. [Zn(tBuLOOH)] was isolated and mass spectrometric data suggested that [Zn(tBuLOR)] (R =Ph, PyN, Fu, Pyr and Imid) had formed, however pure products could not be isolated. Electrochemical studies of [Cu(tBuLOR)] (R = OH, Ph, PyN, Fu, Pyr and Imid) revealtwo irreversible redox processes. [Cu(tBuLOPyN)] possesses first and second redox processes that are ca.0.14 V and 0.23V more positive than their [Cu(tBuLOR)] (R = OH, Ph, Fu, Pyr and Imid) counterparts. This suggests that the pyridyl functionalization of the pendant arm in [Cu(tBuLOPyN)]may stabilize its oxidation product. Chapter 5 provides a conclusion to the thesis and draws together the principal themes of each chapter.
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Pangilian, Gerardo I. "Raman scattering studies of the II-V semiconductors Zn?As? and Zn?P? /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487677267727653.

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Maciel, Jhonny Willians de Oliveira. "Complexos de Fe(II), Mn(II), Cu(II) e Zn(II) derivados de um ligante do tipo oxamato funcionalizado: síntese e caracterização." Universidade Federal de Goiás, 2018. http://repositorio.bc.ufg.br/tede/handle/tede/9038.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
New supramolecular systems based on metal complexes of formula [Fe(H2pcpa)2(H2O)2] (3), [Mn(Hpcpa)(H2O)3]n•1/2H2O (4), [Zn(Hpcpa)(H2O)3]n•1/2H2O (5) and [Cu2(Hpcpa)2(bipy)2]•5,6H2O (6) [H2pcpa- and Hpcpa2- ion derivative of EtH2pcpa (1) = N-(4-carboxyphenyl)oxamic ethyl ester] have been synthesized and describe in this work. The structure of 3 consists of discrete Fe(II) units, each metal ion is six-coordinate in a distorted octahedral environment with four oxamate-oxygens from a H2pcpa- ligand in the basal plane and two water molecules in the apical position. 4 and 5 is a neutral zigzag chain of Mn(II) and Zn(II) ions, respectively, bridged by Hpcpa2- ligands exhibiting the bidentate/monodentate coordination mode. Each metal ion is building a somewhat distorted octahedral surrounding. The distance between metals ions intrachain is 11.456 Å (4) and 11.325 Å (5). Complex 6 consists of a dimer in which the Cu(II) ions is found in a square-shaped pyramidal geometry connected by two Hpcpa2- and the 2,2'-bipyridine as a terminal ligand.
Foram obtidos novos sistemas supramoleculares baseados em compostos de coordenação com o ligante ácido N-(4-carboxifenil) oxâmico etil éster (EtH2pcpa/1) e os metais Fe(II), Mn(II), Cu(II) e Zn(II). As sínteses, caracterizações espectroscópicas e elucidação das estruturas cristalinas de quatro compostos inéditos de fórmula [Fe(H2pcpa)2(H2O)2] (3), [Mn(Hpcpa)(H2O)3]n•1/2H2O (4), [Zn(Hpcpa)(H2O)3]n•1/2H2O (5) e [Cu2(Hpcpa)2(bipy)2]•5,6H2O (6) foram descritas nesse trabalho. O complexo 3 formou monocristais de cor laranja amarronzada, cuja a estrutura consiste em um monômero de Fe(II). Cada íon de Fe(II) é hexacoordenado com esfera de coordenação composta de duas moléculas de água posicionadas em trans e quatro oxigênios-oxamato de dois ligante H2pcpa-. Os compostos 4 e 5 formaram monocristais transparentes incolores cujas estruturas cristalinas são formadas por cadeias em ziguezague neutras de íons Mn(II) e Zn(II), respectivamente. Cada íon metálico está hexacoordenado com as três moléculas de água posicionadas em Meridional, dois oxigênios-oxamato de um ligante Hpcpa2- e um oxigênio-carboxilato de um outro grupo do Hpcpa2-. A distância entre os metais intracadeia Mn...Mn no complexo 4 é de 11,456 Å e Zn...Zn no complexo 5 é de 11,325 Å. O complexo 6 formou monocristais azuis, a estrutura consiste em um dímero em que o íon de Cu(II) encontra-se penta coordenado em uma geometria piramidal de base quadrada com dois íons de Cu(II) ligados por dois ligantes Hpcpa2- e com o ligante 2,2'-bipiridina atuando como ligante terminal.
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Gresser, Roland, Alexander Hoyer, Markus Hummert, Horst Hartmann, Karl Leo, and Moritz Riede. "Homoleptic Co(II), Ni(II), Cu(II), Zn(II) and Hg(II) complexes of bis-(phenyl)-diisoindol-aza-methene." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-138691.

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The synthesis of five homoleptic transition metal complexes of bis-(phenyl)-diisoindol-aza-methene is described together with the optical, electrochemical and thermal properties of these compounds. Additionally, crystal structures for the Co and the Zn complex are reported
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
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Gresser, Roland, Alexander Hoyer, Markus Hummert, Horst Hartmann, Karl Leo, and Moritz Riede. "Homoleptic Co(II), Ni(II), Cu(II), Zn(II) and Hg(II) complexes of bis-(phenyl)-diisoindol-aza-methene." Royal Society of Chemistry, 2011. https://tud.qucosa.de/id/qucosa%3A27773.

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The synthesis of five homoleptic transition metal complexes of bis-(phenyl)-diisoindol-aza-methene is described together with the optical, electrochemical and thermal properties of these compounds. Additionally, crystal structures for the Co and the Zn complex are reported.
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
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Giovedi, Claudia. "Comportamento eletroquímico dos metais Co(II), Ni(II), Mn(II), Fe(II) e Zn(II) na presença do ligante azoteto." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-02122009-152133/.

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O comportamento eletroquímico dos metais cobalto(II), níquel(II), manganês(II), ferro(II) e zinco(II) na presença do ligante azoteto foi estudado em duas condições: variando-se a concentração do ligante em solução de 0 a 2,0 mol/L e apenas tendo-o pré-adsorvido na superficie do eletrodo de mercúrio, buscando-se assim esclarecer os fenômenos determinantes na extensão da atuação do ligante como mediador facilitando a etapa de transferência de elétrons do eletrodo para o metal. Os resultados obtidos nas duas séries de experimentos mostraram ser a extensão da atuação do ligante como mediador dependente do metal estudado. No primeiro caso a adição gradativa de azoteto às soluções que contêm os cátions metálicos causa a antecipação progressiva da onda de redução dos metais Co(II) e Ni(II), o deslocamento para potenciais progressivamente mais negativos no caso dos metais Mn(II) e Fe(II) e, para o Zn(II), uma pequena antecipação em baixas concentrações do ligante e em seguida o aumento de sobretensão. Tendo-se apenas o ligante adsorvido na superficie do eletrodo, verifica-se a diminuição da sobretensão de redução dos metais Co(II) e Ni(II), um pequeno aumento no caso do metal Zn(II) e a completa eliminação da reação de eletrodo para o Mn(II). As diferenças observadas nos dois experimentos, comprovaram a importância do fenômeno de complexação na superficie do eletrodo para que se verifique a atuação do ligante como mediador. No entanto, apesar da necessidade de ocorrer a interação do metal com o ligante para facilitar a reação de transferência de elétrons, o complexo formado na superficie do eletrodo não pode ser termodinamicamente mais estável que o aquo-íon do metal, pois neste caso ao invés da diminuição da sobretensão de redução do metal irá se registrar o deslocamento do potencial de redução diretamente para potenciais mais negativos.
The electrochemical behaviour of cobalt(II), nickel(II), manganese(II), iron(II) and zinc(II) was studied in the presence of azide in two conditions: varying the ligand concentrations in solution from 0.0 to 2.0 mol/L and just pre-adsorbing it onto the mercury electrode surface, in order to evaluate the determining aspects on the extent of the action of the ligand as a mediator in facilitating electron transfer. The results obtained in the two sets of experiments showed to what extent the action of the ligand as a mediator is dependent on the metal studied. In the first case, the addition of azide to solutions of these metaIs causes the following: a progressive anticipation in the reduction waves of Co(lI) and Ni(II); the shift towards more negative potentials for Mn(II) and Fe(II); and for Zn(TT) a small shift towards more positive potentials at low azide concentrations followed by a shift towards more negative potentials. The experiments carried out with the pre-adsorption ofthe azide onto the mercury surface showed the shift of the reduction waves of Co(lI) and Ni(II) towards more positive potentials, a small shift towards more negative potentials for Zn(II) and the complete elimination of the electrode reaction for Mn(II). The differences observed in the two experiments proved the importance of the complexation phenomenon onto the electrode surface in order to occur the action of the ligand as a mediator. However, inspite of the need of the interaction between metal and ligand to facilitate the electron transfer, the complex formed onto the electrode surface cannot be thermodynamically more stable than its metal aquo-ion, as in this case it will be observed the shift of the reduction potential towards more negative potentials.
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Germino, José Carlos 1990. "Propriedades luminescentes de compostos de coordenação de Zn(II)." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249465.

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Orientador: Teresa Dib Zambon Atvars
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química
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Resumo: Nesta dissertação foram estudadas as propriedades fotoluminescentes de alguns compostos de coordenação de Zn(II) com N,N'-bis(salicilidenos) em soluções de THF e DMSO e em estado sólido: N,N'-bis(salicilideno)-1,2-fenilenodiamino - salofeno (KG-15) e seu composto de coordenação de Zn(II) aquo[N,N'-bis(salicilideno)-1,2- fenilenodimino]zinco(II)([Zn(salofeno)(H2O)]; (KG-15/Zn)); N,N'-bis(salicilideno)-4,5- diaminopirimidina - sal-4,5-pym (KG-17) e seu composto de coordenação de Zn(II) aquo[N,N'-bis(salicilideno)-4,5-diaminopirimidina]zinco(II) ([Zn(sal-4,5-pym)(H2O)]; (KG- 17/Zn). Os N,N'-bis(salicilidenos) e seus compostos de coordenação de Zn(II) foram sintetizados, observando-se aumento de cerca de 30 % dos rendimentos reacionais sob irradiação ultrassônica. Foram caracterizados por FTIR, ressonância magnética nuclear 1D de hidrogênio (1H) e de carbono (13C), caracterização estrutural por CHN, no caso dos ligantes realizou-se a caracterização estrutural por difração de raios-X de monocristal, foram também determinados os potenciais de óxido-redução do [Zn(salofeno)(H2O)] por voltametria cíclica e os valores de energia das bandas foram comparados com dados de espectroscopia eletrônica de absorção. As espectroscopias de fluorescência estacionária e resolvida no tempo em solução diluída de THF e de DMSO (apenas KG-17) e no estado sólido mostraram evidências da ocorrência da transferência de prótons no estado eletrônico excitado nos ligantes livres e coordendados. O composto [Zn(salofeno)(H2O)] apresentou eletroluminescência muito fraca em um dispositivo formado por vidro/ITO/PEDOT:PSS/composto de coordenação/Ca/Al muito baixa. Um diodo montado por vidro/ITO/PEDOT:PSS/PVK:(PFOFPen:[Zn(salofeno)(H2O)])/Ca/Al apresentou luminescência do composto de coordenação de Zn(II) devido à processos de transferência de energia entre o PFOFPen (doador) e o [Zn(salofeno)(H2O)] (receptor), além da eletroluminescência do PFOFPen
Abstract: In this dissertation the photoluminescent properties of some coordination compounds of Zn(II) with N,N'-bis(salicylidenes) in THF and DMSO solutions and solid state were studied: N,N'-bis(salicylidene)-1,2-phenylenediamine - salophen (KG-15) and its Zn(II) coordination compounds aquo[N,N'-bis(salicylidene)-1,2- phenylenediaminate]zinc(II) - [Zn(salophen)(H2O)] (KG-15/Zn) , N,N'-bis(salicylidene)- 4,5-diaminepyrimidine - sal-4,5-pym (KG-17) and its Zn(II) coordination compounds aquo[N,N'-bis(salicylidene)-4,5-diaminate]zinc(II) - [Zn(sal-4,5-pym)(H2O)] (KG-17/Zn). The ligands N,N'-bis(salicylidenes) and their Zn(II) coordination compounds were synthesized, observing an increase of about 30 % of the reaction proceeds under ultrasonic irradiation. The ligands and Zn(II) coordination compounds were characterized by FTIR,1D nuclear magnetic resonance of hydrogen (1H) and carbon (13C), structural characterization by CHN elemental analysis, in the case of the ligands the structural characterization was performed by monocrystal X-ray diffraction. The oxyreduction potential of [Zn(salophen)(H2O)] were determined by cyclic voltammetry and the values of the electrochemical energy band gap were compared with optical data. The stationary and time resolved fluorescence spectroscopy of the compounds in dilute solutions of THF and of DMSO (only KG-17) and in solid state showed proton transfer in the electronic excited state locaded on the ligands. The [Zn(salophen)(H2O)] compound exhibit a very low electroluminescence in a device consisting by glass/ITO/PEDOT:PSS/PVK:[Zn(salophen)(H2O)]/Ca/Al. A diode assembled by glass/ITO/PEDOT:PSS/PVK:(PFOFPen:[Zn(salophen)(H2O)])/Ca/Al showed luminescence of Zn(II) coordination compound due to energy transfer processes between PFOFPen (donor) and [Zn(salophen)(H2O)] (acceptor), beyond the electroluminescence of the PFOFPen
Mestrado
Físico-Química
Mestre em Química
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Costa, Creusa Maieru Macedo. "Reações de quelatos N-aciltioureias de Ni(II), Zn(II) e Cd(II) com algumas bases nitrogenadas." [s.n.], 1985. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249682.

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Orientador : Yoshitaka Gushikem
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica
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Doutorado
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Favere, Valfredo Tadeu de. "Adsorção dos ions Cu (II), Cd (II), Ni (II), Pb (II) e Zn (II) pelo biopolimero quitina quitosana e pelas quitosanas modificadas." reponame:Repositório Institucional da UFSC, 1994. http://repositorio.ufsc.br/xmlui/handle/123456789/76167.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e matematicas
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Quitina, quitosana e quitosanas modificadas com o ácido cetoglutárico, 3,4-dihidroxibenzaldeído e 8-hidroxiquinoleína foram empregadas para adsorver Cu(II), Cd(II), Ni(II), Pb(II) e Zn(II) em solução. A quitina, Iquitosana e as modificações químicas realizadas com a quitosana foram caracterizadas por espectroscopia de infravermelho, ressonância magnética nuclear de 13C e microanálise. O estudo das isotermas de adsorção foi realizado empregando o método de ajuste não linear para ajustar os dados de adsorção. O emprego de três modelos de isotermas de adsorção para reproduzir os dados experimentais, isto é, os modelo de Langmuir, Langmuir-Freudlich e de Toth foram os que proporcionaram os melhores ajustes dos dados. Os resultados mostraram que a quitosana modificada com ácido cetoglutárico e a quitosana modificada com 3,4-dihidroxibenzaldeído apresentaram os melhores resultados de adsorção.
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Pietrobelli, Juliana Martins Teixeira de Abreu. "Avaliação do potencial de biossorção dos íons Cd (II), Cu (II) e Zn (II) pela macrófita Egeria densa." Universidade Estadual do Oeste do Parana, 2007. http://tede.unioeste.br:8080/tede/handle/tede/1865.

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In the present work has been studied the metallic ion removal from aqueous solutions using the non-living aquatic macrophytes Egeria densa as biosorbent in order to assess its potential on cadmium, cuprum and zinc ions adsorption experiments. For this purpose, several adsorption tests were performed by duplicate in order to determine the optimal experimental conditions, based on the effects of aqueous solution pH, drying temperature, and particle size on mono-component adsorption kinetic and equilibrium experiments using the E. densa dry biomass. Metallic aqueous solutions were prepared dissolving cadmium, cuprum and zinc chlorate (Cl2Cd.H2O, Cl2Cu.2H2O, Cl2Zn) in deionized water. In this way, some biosorption experiments were carried out setting up aqueous solution pH values at 4, 5 and 6 and non-adjusted pH value under constant and controlled temperature at a shaker system for each metallic ion in order to obtain the equilibrium parameters. At each experiment, initial and final metal concentrations were determined by the Atomic Absorption Spectrometry technique. At room temperature and without shaking up, the metal precipitation into the aqueous solution was observed since pH 5 for cadmium and cuprum ions, while for zinc ion this process has began only near to pH 6. Based on the metallic ion removal factor at 30 and 50oC, the best biosorbent drying temperature was obtained at low temperature. On the other hand, the particle size effect onto metal biosorption process is not significant according the similar metallic removal factor for all the different particle sizes investigated. The biosorption kinetic results at non-adjusted pH and 5-adjusted pH and have shown an equilibrium time reduction from 60 to 45 and 30 minutes for cadmium and zinc ion, respectively. While, for cadmium ion, the pH effect was to reduce from 12 to 2 h due to change the aqueous solution pH value from non-adjusted to 5, respectively, with an increasing on removal factor from 60 to 70%. The experimental data were interpreted by four adsorption models. The pseudo first and second order models were used to fit the kinetic biosorption data. For all the metallic ions investigated the pseudo second order model has got fitting better the kinetic biosorption data. On the other hand, the Freundlich and Langmuir model were used to interpret the equilibrium data. For adsorption experiments at pH 5 and according to statistical criteria, the Langmuir model was better than Freundlich one to fit the experimental data. The adsorption parameters, qmax and b, obtained from Langmuir model were 1.28 mequivg-1 and 0.40 L g-1, 1.47 mequivg-1 and 3.73 L g-1, 0.922 mequivg-1 and 0.829 L g-1 for cadmium, cuprum and zinc, respectively. At mono-component biosorption conditions suggested above, the non-living aquatic macrófita E. densa biomass can be used into effluent treatment systems as biosorbent due to its great adsorption potential.
O presente trabalho teve por objetivo avaliar o potencial da macrófita aquática, Egeria densa, seca, na remoção dos íons metálicos Cd (II), Cu (II) e Zn (II). Foram realizados testes para verificação da influência do pH, temperatura de secagem do biossorvente, temperatura de biossorção e tamanho das partículas a serem utilizados nos testes cinéticos e de equilíbrio. Todos os experimentos foram realizados em duplicata. No estudo de equilíbrio da biossorção dos íons metálicos, monocomponentes, foram realizados experimentos com pH ajustados em 4, 5 e 6 e sem ajuste. Os ensaios foram realizados à temperatura controlada, sob agitação constante. As concentrações dos íons metálicos foram determinadas por espectrofotometria de absorção atômica. Pelo teste de precipitação, realizado em temperatura ambiente e sem agitação, observou-se que acima de pH 5 inicia-se a precipitação para os íons Cd (II) e Cu (II), enquanto para o Zn (II) este processo inicia-se próximo de pH 6. Através do teste de temperatura de secagem e de biossorção verificou-se que a maior porcentagem de remoção ocorre na temperatura de secagem ambiente e a temperatura de biossorção de 30oC. A influência do tamanho das partículas do biossorvente também foi avaliada, sendo a diferença na porcentagem de remoção insignificante para os diferentes tamanhos testados. Na avaliação da influência do pH verificou-se, no teste cinético, que para os íons Cd (II) e Zn (II) ocorreu uma redução no tempo de equilíbrio de 1 hora (sem ajuste) para 45 minutos (pH 5) e para o íon Cu (II) ocorreu uma redução no tempo de equilíbrio de 12 horas (sem ajuste) para 2 horas (pH 5), com aumento na taxa de remoção de 60 para 70%. Na verificação da cinética de biossorção, o melhor ajuste foi obtido pelo modelo de pseudo-segunda ordem, para todos os íons metálicos testados. O modelo que melhor se ajustou aos dados de equilíbrio foi o de Langmuir, com pH ótimo 5, cujos parâmetros qmax e b para os íons de Cd, Cu e Zn em pH 5 foram: 1,28 meq.g-1 e 0,40 l.g-1, 1,47 meq.g-1 e 3,73l.g-1, 0,922 meq.g-1 e 0,829l.g-1, respectivamente. Assim, pelos resultados obtidos pode-se afirmar que a biomassa da macrófita aquática Egeria densa possui grande potencial para o tratamento de efluentes contendo metais pesados.
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Books on the topic "Zn(II)"

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Spratt, Thomas E. Mechanistic studies on Zn(II)- and Co(II)- carboxypeptidase A and angiotensin converting enzyme. 1985.

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Book chapters on the topic "Zn(II)"

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Gunasekera, Thusitha, J. Allen Easton, Stacy A. Sugerbaker, Lindsey Klingbeil, and Michael W. Crowder. "Zn(II) Homeostasis inE. coli." In ACS Symposium Series, 81–95. Washington, DC: American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1012.ch006.

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Higuchi, Masayoshi. "Zn(II)-Based Metallo-Supramolecular Polymers." In NIMS Monographs, 49–52. Tokyo: Springer Japan, 2019. http://dx.doi.org/10.1007/978-4-431-56891-9_5.

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Kinoshita-Kikuta, Emiko, Eiji Kinoshita, and Tohru Koike. "Zn(II)–Cyclen Polyacrylamide Gel Electrophoresis for SNP Detection." In Methods in Molecular Biology, 169–82. Totowa, NJ: Humana Press, 2009. http://dx.doi.org/10.1007/978-1-60327-411-1_10.

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Stillman, Martin J. "Spectroscopic Properties of Ag(I), Cd(II), Cu(I), Hg(II), and Zn(II) Metallothioneins." In Cytotoxic, Mutagenic and Carcinogenic Potential of Heavy Metals Related to Human Environment, 139–94. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5780-3_9.

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Sharmin, Eram, Manawwer Alam, Deewan Akram, and Fahmina Zafar. "Mn(II) and Zn(II) Containing Linseed Oil-Based Poly (Ester Urethane) as Protective Coatings." In Chemistry and Industrial Techniques for Chemical Engineers, 67–77. Series statement: Innovations in physical chemistry: monographic series: Apple Academic Press, 2020. http://dx.doi.org/10.1201/9780429286674-5.

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Rasool, Tanveer, and Waris Baba. "Removal of Ni(II) and Zn(II) from Aqueous Media Using Algae-Sodium Bentonite Nanocomposite." In Nanotechnology for Energy and Environmental Engineering, 561–76. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33774-2_24.

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Daumann, Lena Josefine. "Structural and Mechanistic Studies of Zn(II) Complexes as Phosphoesterase Models." In Spectroscopic and Mechanistic Studies of Dinuclear Metallohydrolases and Their Biomimetic Complexes, 89–117. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06629-5_4.

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Daumann, Lena Josefine. "Asymmetric Zn(II) Complexes as Structural and Functional Models for GpdQ." In Spectroscopic and Mechanistic Studies of Dinuclear Metallohydrolases and Their Biomimetic Complexes, 189–209. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06629-5_7.

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Berkesi, O., I. Dreveny, and J. A. Andor. "Specific Equilibria Of Zn(II) Oleate And Stearate In Organic Solvents." In Surfactants in Solution, 63–75. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0839-3_5.

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Sija, Éva, Annalisa Dean, Tamás Jakusch, Valerio B. Di Marco, Alfonso Venzo, and Tamás Kiss. "Interactions of pyridinecarboxylic acid chelators with brain metal ions: Cu(II), Zn(II), and Al(III)." In Metal Ions in Neurological Systems, 199–210. Vienna: Springer Vienna, 2012. http://dx.doi.org/10.1007/978-3-7091-1001-0_17.

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Conference papers on the topic "Zn(II)"

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Wibowo, Atmanto Heru, Metin Yuliati, Abu Masykur, Suyitno, Desi Suci Handayani, Dian Maruto Widjonarko, Maulidan Firdaus, Ari Yustisia, and Takuji Ogawa. "Synthesis and spectra study of Cu (II), Fe (II), Zn (II)-5,15-diphenyl porphyrin." In THE 14TH JOINT CONFERENCE ON CHEMISTRY 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0005553.

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Meghea, Mihai. "KINETIC STUDY OF Zn(II), Cd(II) AND Pb(II) IONS SORPTION ON Na-MONTMORILLONITE." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/52/s20.076.

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Soldatovic, Tanja, Enisa Selimovic, Nevena Milivojević, Milena Jovanović, Biljana Šmit, and Katarina Virijević. "Novel bridged heteronuclear Pt(II)-L-Zn(II) complexes with promising antitumor activity." In 6th International Electronic Conference on Medicinal Chemistry. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/ecmc2020-07358.

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Kurniawan, Muhammad Arsyik, Nia Silvia Sukma, Indah Rohmah W., and Dela Anggraini. "The properties of alginate/zeolite composite for Fe(III), Zn(II), and Fe-Zn storage." In 2ND INTERNATIONAL CONFERENCE ON CHEMISTRY, CHEMICAL PROCESS AND ENGINEERING (IC3PE). Author(s), 2018. http://dx.doi.org/10.1063/1.5065053.

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Abdunnaser Etorki, Mohammed Abuein, and El-Hajami Ali. "Removal of Cd(II), Pb(II), Hg(II) and Zn(II) ions from wastewater using synthesized poly(p-bromoanaline)." In 2010 International Conference on Bioinformatics and Biomedical Technology. IEEE, 2010. http://dx.doi.org/10.1109/icbbt.2010.5479004.

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Nejdl, Lukas. "AUTOMATIC ELECTROCHEMICAL DETERMINATION OF SOIL CONTAMINATED BY HEAVY METAL IONS (ZN(II), CD(II) AND PB(II))." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b32/s13.009.

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Thompson, Richard B., Badri P. Maliwal, Vincent Feliccia, and Carol A. Fierke. "High-sensitivity determination of Zn(II) and Cu(II) in vitro by fluorescence polarization." In BiOS '98 International Biomedical Optics Symposium, edited by Gerald E. Cohn. SPIE, 1998. http://dx.doi.org/10.1117/12.307337.

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Zhang, Hanbing, Zhangfa Tong, Tengyou Wei, and Yankui Tang. "Notice of Retraction: Adsorption Characteristics of Zn(II) and Cu(II) on Alkaline Ca-Bentonite." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5781083.

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Rudresha, B. J., B. Ramachandra Bhat, K. B. Manjunatha, G. Umesh, P. Predeep, Mrinal Thakur, and M. K. Ravi Varma. "Synthesis, Characterization and Third Order Nonlinear Optical Studies of Diimine Based Zn(II), Cd(II) and Hg(II) Complexes." In OPTICS: PHENOMENA, MATERIALS, DEVICES, AND CHARACTERIZATION: OPTICS 2011: International Conference on Light. AIP, 2011. http://dx.doi.org/10.1063/1.3643653.

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Abed, Rana, Fadia Ahmed, and Samaa Raoof. "New Cu (II)and Zn (II) complexes with O- nitrobenzylidene trimethoprim , Evaluation of their Antibacterial activities." In Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020. EAI, 2020. http://dx.doi.org/10.4108/eai.28-6-2020.2298121.

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Reports on the topic "Zn(II)"

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Nelson, W. R., T. Borak, R. Malchow, W. Toki, and J. Kadyk. EGS4 calculations for a Cd-Zn-Te detector to measure synchrotron radiation at PEP-II. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/663292.

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Leybourne, M. I., W. D. Goodfellow, and D. R. Boyle. Chemical and stable isotopic composition of ground and surface waters from the Restigouche Zn-Pb massive sulphide deposit, Bathurst mining camp, northern New Brunswick - EXTECH II. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207899.

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