Chemistry of gold(I, III) complexes with organic ligands as potential MOCVD precursors for fabrication of thin metallic films and nanoparticles

1968 ◽

Vol 26 ◽

pp. 380-381

Author(s):

J. Silcox ◽

R. H. Wade

Keyword(s):

Electron Scattering ◽

Small Angle ◽

Ring Structure ◽

Two Dimensional ◽

Metallic Films ◽

Micro Structure ◽

Angle Scattering ◽

The Fourier Transform ◽

Source Of Information ◽

Kinematical Theory

Recent work has drawn attention to the possibilities that small angle electron scattering offers as a source of information about the micro-structure of vacuum condensed films. In particular, this serves as a good detector of discontinuities within the films. A review of a kinematical theory describing the small angle scattering from a thin film composed of discrete particles packed close together will be presented. Such a model could be represented by a set of cylinders packed side by side in a two dimensional fluid-like array, the axis of the cylinders being normal to the film and the length of the cylinders becoming the thickness of the film. The Fourier transform of such an array can be regarded as a ring structure around the central beam in the plane of the film with the usual thickness transform in a direction normal to the film. The intensity profile across the ring structure is related to the radial distribution function of the spacing between cylinders.

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Search for quantum size effects in ultrathin epitaxial metallic films

Annales de Physique ◽

10.1051/anphys:01991001606062300 ◽

1991 ◽

Vol 16 (6) ◽

pp. 623-638 ◽

Cited By ~ 3

Author(s):

P.A. Badoz ◽

F. Arnaud d'Avitaya ◽

E. Rosencher

Keyword(s):

Size Effects ◽

Quantum Size Effects ◽

Metallic Films ◽

Quantum Size

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Experimental and Theoretical Investigations of Complex Formation of Substituted Phenylazo-Derivatives of Methylphloroglucinol

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v12i8.2837 ◽

2016 ◽

Vol 12 (8) ◽

pp. 295-300

Author(s):

Olga Kovalchukova ◽

Amangdam A.T. ◽

Strashnova S.B. ◽

Strashnov P.V. ◽

Romashkina E.P. ◽

...

Keyword(s):

Complex Formation ◽

Organic Ligand ◽

Spectrophotometric Titration ◽

Organic Ligands ◽

Oh Groups ◽

Tautomeric Forms ◽

Theoretical Investigations ◽

Derivatives Of ◽

Theoretical Results ◽

Titration Technique

Using spectrophotometric titration technique, the processes of complex formation of some phenylazo-derivatives of methylphloroglucinol (MPG) containing hydroxo-, nitro- and nitroso-substituents were studied. The spectral criteria of neutral and ionized forms of the organic ligands in their different tautomeric forms were determined.It was detected that the complex formation is accompanied by formation of one or two chelate cycles which involve azo- or nitroso-fragments and neighboring OH-groups of the organic ligands. Different types of coordination lead to different changes in the electronic absorption spectra.The DFT-B3LYP modeling of a Ni(II) complex of α-hydroxyphenylazo MPG established the most probable coordination mode of the organic ligand: tridentate chelating dianion, distorted square coordination of Ni-cations including one water molecule. The theoretical results are in a good accordance with the experimental data.

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Metal-Assisted Plasma Etching of Silicon: A Liquid-Free Alternative to MACE

10.26434/chemrxiv.6128237 ◽

2018 ◽

Author(s):

Julia Sun ◽

Benjamin Almquist

Keyword(s):

Liquid Phase ◽

Plasma Etching ◽

Chemical Etching ◽

Gold Films ◽

Metallic Films ◽

Au Catalyst ◽

Feed Concentration ◽

Catalytic Activities ◽

Metal Assisted Chemical Etching ◽

Complex Nanostructures

For decades, fabrication of semiconductor devices has utilized well-established etching techniques to create complex nanostructures in silicon. Of these, two of the most common are reactive ion etching in the gaseous phase and metal-assisted chemical etching (MACE) in the liquid phase. Though these two methods are highly established and characterized, there is a surprising scarcity of reports exploring the ability of metallic films to catalytically enhance the etching of silicon in dry plasmas via a MACE-like mechanism. Here, we discuss a metal-assisted plasma etch (MAPE) performed using patterned gold films to catalyze the etching of silicon in an SF6/O2 mixed plasma, selectively increasing the rate of etching by over 1000%. The degree of enhancement as a function of Au catalyst configuration and relative oxygen feed concentration is characterized, along with the catalytic activities of other common MACE metals including Ag, Pt, and Cu. Finally, methods of controlling the etch process are briefly explored to demonstrate the potential for use as a liquid-free fabrication strategy.

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Molecular kinetic aspects of the vapo¬rization processes of volatile coordination compounds with organic ligands

Журнал структурной химии ◽

10.26902/jsc20170802 ◽

2017 ◽

Vol 58 (8) ◽

pp. 1534-1542

Author(s):

V.V. Lukashov ◽

◽

M.S. Makarov ◽

S.N. Makarova ◽

I.K. Igumenov ◽

...

Keyword(s):

Coordination Compounds ◽

Organic Ligands

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Stress in Evaporated Metallic Films

Shinku ◽

10.3131/jvsj.6.182 ◽

1963 ◽

Vol 6 (5) ◽

pp. 182-188

Author(s):

Hisashi HORIKOSHI ◽

Noriko TAMURA

Keyword(s):

Metallic Films

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New Coordination Compounds of Fe(III) with Organic Ligands

Revista de Chimie ◽

10.37358/rc.08.12.2055 ◽

2009 ◽

Vol 59 (12) ◽

Author(s):

Mihaela Flondor ◽

Ioan Rosca ◽

Doina Sibiescu ◽

Mihaela-Aurelia Vizitiu ◽

Daniel-Mircea Sutiman ◽

...

Keyword(s):

Chemical Analysis ◽

Complex Compounds ◽

Organic Ligands ◽

X Ray Diffraction ◽

X Ray ◽

Elemental Chemical Analysis ◽

Structural Formulae ◽

Paramagnetic Properties

In this paper the synthesis and the study of some complex compounds of Fe(III) with ligands derived from: 2-(4-chloro-phenylsulfanyl)-1-(2-hydroxy-3,5-diiodo-phenyl)-ethanone (HL1), 1-(3,5-dibromo-2-hydroxy-phenyl)-2-phenylsulfanyl-ethanone(HL2), and 2-(4-chloro-phenylsulfanyl)-1-(3,5-dibromo-2-hydroxy-phenyl)-ethanone (HL3) is presented. The characterization of these complexes is based on method as: the elemental chemical analysis, IR and ESR spectroscopy, M�ssbauer, the thermogravimetric analysis and X-ray diffraction. Study of the IR and chemical analysis has evidenced that the precipitates form are a complexes and the combination ratio of M:L is 1:2. The central atoms of Fe(III) presented paramagnetic properties and a octaedric hybridization. Starting from this precipitation reactions, a method for the gravimetric determination of Fe(III) with this organic ligands has been possible. Based on the experimental data on literature indications, the structural formulae of the complex compounds are assigned.

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