X-ray induced decomposition of gold nitride

Butenko, Yu. V.; Alves, Luís; Brieva, A. C.; Yang, Jianhua; Krishnamurthy, S.; Šiller, Lidija

doi:10.1016/j.cplett.2006.08.096

Cited by 36 publications

(21 citation statements)

References 24 publications

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“…Annealing the samples indicated that the lowest binding energy nitride component, at 396.7 ± 0.2 eV, disappears at *200°C [9]. Further studies demonstrated that this component was also unstable under prolonged exposure to Xray radiation indicating the relative lack of stability of the nitrogen state associated with this peak [10]. In these initial studies it was believed, based upon the theoretical investigation of stochiometric gold nitride compounds [9], that the nitride was most likely in the form of a novel triclinic phase of composition Au 3 N. Subsequent synchrotron-based high resolution X-ray scattering studies [11] showed no evidence of a separate gold nitride phase, but did show an isotropic lattice expansion consistent with the incorporation of nitrogen in interstitial locations of the face-centred-cubic gold lattice.…”

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 91%

“…Peak A1 is associated with nitrogen in the form of gold nitride [8,9], peak A3 is a second gold nitride component [9], while peak B arises from nitrogen molecules which are trapped in bubbles beneath the surface and do not undergo any strong chemical interaction with gold [8,9]. The component labelled A2 is not present in the gold film synthesised by NII and can be assigned to oxynitride and/or carbon-nitride species [10], which appear as (low levels) of contamination due to the less stringent vacuum used in the industrially oriented large scale production approaches.…”

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 97%

“…1 (adapted from ref. [10]) the N 1s photoemission spectrum from a gold nitride film, produced by RIS in high vacuum, is compared with a spectrum from gold nitride produced by NII of Au(110) in UHV [9]. Three peaks, at binding energies of 397.0 ± 0.1 (labelled A1), 399.1 ± 0.2 (labelled A2) and 403.0 ± 0.1 eV (labelled B) can be clearly resolved in the spectrum from the RIS produced sample (upper curve).…”

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 97%

“…There are a number of different techniques by which gold nitride films can be produced such as ion implantation [8,9], reactive ion sputtering (RIS) [6,10,11], plasma etching [6,[12][13][14], reactive pulsed laser deposition [7] and plasma assisted physical vapor deposition (PAPVD) using pulsed arc discharge [15,16]. Moreover, gold nitride species have been found to exist in the gas phase: Drenck et al [17] observed the formation of nitrogen-gold AuN n -anions and dianions.…”

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 99%

“…Our group has since reported the large scale production of gold nitride using RIS and plasma etching without the need for UHV [6,[10][11][12][13][14], reducing the time and cost associated with nitridation. In Fig.…”

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 99%

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Gold Nitride: Preparation and Properties

et al. 2009

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We review the currently known methods of producing gold nitride and report on the influence of electrically isolated substrates on the growth of gold nitride films by reactive ion sputtering (RIS). It is found that isolation of the substrate decreases grain size and increases nitrogen content, the latter attributed to longer nitrogen ion lifetime on the surface of the growing film. The chemical reactivity of gold nitride is compared with that of pure gold films using the adsorption of 1-dodecyl mercaptan (CH 3 (CH 2 ) 11 SH) as a model system and it is found that there is no significant difference between gold films and gold nitride in terms of Au-S binding. However, gold nitride nanoparticles are suggested to be worthy of further investigation in terms of their catalytic properties.

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Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 91%

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 97%

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 97%

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 99%

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 99%

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Gold Nitride: Preparation and Properties

et al. 2009

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Probing the Compatibility of Type II Ketosynthase–Carrier Protein Partners

et al. 2008

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Drug discovery often begins with the screening of large compound libraries to identify lead compounds. Recently, the enzymes involved in the biosynthesis of natural products have been investigated for their potential to generate new, diverse compound libraries. There have been several approaches toward this end, including altering the substrate specificities of the enzymes involved in natural product biosynthesis and engineering functional communication between enzymes from different biosynthetic pathways. While there exist assays to assess substrate specificity of enzymes involved in these pathways, there is no simple method for determining whether enzymes from different synthases will function cooperatively to generate the desired product(s). Herein we report a method which provides insight into both substrate specificity and compatibility of protein-protein interactions between the acyl carrier protein (ACP) and ketosynthase (KS) domains involved in fatty acid and polyketide biosynthesis. Our technique uses a one-pot chemoenzymatic method to generate post-translationally modified ACPs capable of covalently interacting with KS domains from different biosynthetic systems. The extent of interaction between ACPs and KSs from different systems is easily detected and quantified by a gel-based method. Our results are consistent with previous studies of substrate specificity and ACP-KS binding interactions and provide new insight into unnatural substrate and protein interactions.

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Crystal structure and electronic properties of the new structure dinitride–nitride N₂MN (M: Cu, Ag)

Zhuravlev

Лисицын

Morozova

2012

Physica Status Solidi (b)

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Copper and nitrogen compounds and silver and nitrogen compounds have been researched with the first‐principle linear combination of the atomic orbitals in full‐screen basis with the local gradient and hybrid potential of the density functional theory (DFT) realized in the CRYSTAL09 program code. We have found the structural N2MN (M: Cu, Ag) dinitride–nitride phase having an orthorhombic structure, the spatial group of the Ibam symmetry and four formula units in the primitive cell that have not been reported before. The structure was found to be layered, the metal atoms are linearly circled by the nitride N atoms, whereas, the other two atoms make a molecule with a small negative charge of ∼0.02 e. The volume elastic modules in N2CuN, N2AgN crystals are equal to 4.3 and 6.6 GPa, respectively, and their pressure derivatives are equal to 6.7 and 5.3, respectively. The electron energy spectrum makes a superposition of weakly interacting molecular states of N2 and metal states of MN. The bandgap width equals ∼0.05 eV. The estimations of the enthalpy energies show that N2MN possess large energy content and in its decomposition into metal and gaseous nitride the energy release can reach 8 eV cell−1, which appears to be higher than that in the known metal azides. Thus, the new structure of the dinitride–nitride N2MN combines the properties of molecular and semiconductor crystals: high compressibility, strong mechanical anisotropy, localized vacant states in the zone spectrum, and small bandgap. The unique physical properties can ensure their application as energy materials, the source of chemically pure nitride, and in semiconductor and optical material science.

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X-ray induced decomposition of gold nitride

Cited by 36 publications

References 24 publications

Gold Nitride: Preparation and Properties

Gold Nitride: Preparation and Properties

Probing the Compatibility of Type II Ketosynthase–Carrier Protein Partners

Crystal structure and electronic properties of the new structure dinitride–nitride N₂MN (M: Cu, Ag)

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X-ray induced decomposition of gold nitride

Cited by 36 publications

References 24 publications

Gold Nitride: Preparation and Properties

Gold Nitride: Preparation and Properties

Probing the Compatibility of Type II Ketosynthase–Carrier Protein Partners

Crystal structure and electronic properties of the new structure dinitride–nitride N2MN (M: Cu, Ag)

Contact Info

Product

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About

Crystal structure and electronic properties of the new structure dinitride–nitride N₂MN (M: Cu, Ag)