Chemistry (Scholarly Publications): Recent submissions
Now showing items 581-600 of 931
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Ion irradiation induced structural and electrical transition in graphene
(2010)The relationship between the electrical properties and structure evolution of single layer graphene was studied by gradually introducing the gallium ion irradiation. Raman spectrums show a structural transition from ... -
Gas phase controlled deposition of high quality large-area graphene films
(2010)A gas phase controlled graphene synthesis resembling a CVD process that does not critically depend on cooling rates is reported. The controllable catalytic CVD permits high quality large-area graphene formation with deft ... -
Raman modes of index-identified freestanding single-walled carbon nanotubes
(2005)Using electron diffraction on freestanding single-walled carbon nanotubes, we have determined the structural indices (n,m) of tubes in the diameter range from 1.4 to 3 nm. On the same freestanding tubes, we have recorded ... -
Plasma-assisted simultaneous reduction and nitrogen doping of graphene oxide nanosheets
(2013)An environmentally benign and scalable route for the production of gram scale quantities of nitrogen-doped graphene using a downstream microwave plasma source is reported. Simultaneous reduction and doping of graphene oxide ... -
The mechanism of oxygen reactions at porous oxide electrodes Part III: Water oxidation catalysis at RuO2/NiO mixed oxide electrodes
(2014)RuO2/NiO mixed oxide electrodes prepared by thermal decomposition were examined as potential water oxidation catalysts. Addition of just 10 mol% RuO2 to a NiO electrode was found to decrease the oxygen evolution reaction ... -
Single-crystal silicon/silicon dioxide multilayer heterostructures based on nanomembrane transfer
(2007)A method to fabricatesingle-crystalSi/SiO2multilayerheterostructures is presented. Heterostructures are fabricated by repeated transfer of single crystalsiliconnanomembranes alternating with deposition of spin-on-glass. ... -
Theoretical study of the valence and core photoemission spectra of C-60
(2001)The photoionization cross section and angular distribution relative to all primary ionizations in C60 have been computed employing a convergent one-centre expansion and an LDA hamiltonian over an extended energy range. The ... -
Complexes of a gallium heterocycle with transition metal dicyclopentadienyl and cyclopentadienylcarbonyl fragments, and with a dialkylmanganese compound.
(2006)The reactivity of several transition metal half sandwich complexes towards an anionic gallium(I) heterocyclic complex, [K(tmeda)][Ga{[N(Ar)C(H)]2}] (Ar = C6H3Pri2-2,6), has been investigated. This has led to the anionic ... -
The reactivity of Gallium-(I), -(II) and -(III) heterocycles towards group 15 substrates: Attempts to prepare gallium-terminal pnictinidene complexes.
(2006)The reactivity of a series of Ga(I), Ga(II) and Ga(III) heterocyclic compounds towards a number of Group 15 substrates has been investigated with a view to prepare examples of gallium–terminal pnictinidene complexes. ... -
Bidentate N-Heterocyclic carbene complexes of group 13 trihydrides and trihalides.
(2002)top Treatment of the potentially chelating bis-carbene, 1,2-ethylene-3,3′-di-tert-butyl-diimidazole-2,2′-diylidene, EtIBut, with [MH3(NMe3)], M = Al, Ga, In, in a 1 ∶ 1 or 1 ∶ 2 stoichiometery led to good yields of the ... -
Transition metal complexes of triphosphorus macrocycles: A new class of homogeneous olefin polymerisation catalysts.
(2002)Some early transition metal (Ti, V, Cr) complexes of the triphosphorus macrocycle 1,5,9-triethyl-1,5,9-triphosphacyclododecane, [12]aneP3Et3, and related derivatives [12]aneP3R3 (R = Ph, C3H6OMe) have been examined for ... -
The reactivity of diazabutadienes towards low oxidation state group 13 iodides and the synthesis of a new gallium(I) carbene analogue
(2002)The reactions of two diazabutadiene ligands, Ar-DAB [(ArN[double bond, length as m-dash]CH)2 , Ar = 2,6-Pri2C6H3] and But-DAB [(ButN[double bond, length as m-dash]CH)2] with either GaI or an AlI3/Al mixture have afforded ... -
Manganese and Rhenium triphosphorus macrocycle complexes and reactions with alkenes.
(2002)The synthesis of Re(III), Re(I) and Mn(I) compounds of the macrocyclic phosphine ligand 1,5,9-trialkyl-1,5,9-triphosphacyclododecane, 12[ane]P3R3 (R = Et, iBu) is described. The reaction of 12[ane]P3R3 with ReCl3(PPh3)2(CH3CN) ... -
Low valent carbonylvanadium complexes of the triphosphorus macrocycle 12[ane]P3Et3.
(2003)The triphosphorus macrocycle 1,5,9-triethyl-1,5,9-triphosphacyclododecane, 12[ane]P3Et3, reacts with [V(CO)6]− under photolytic conditions to produce fac-[(12[ane]P3Et3)V(CO)3]− (1) which has been isolated as its Et4N salt. ... -
"GaI": A versatile reagent for the synthetic chemist.
(2005)The current renaissance in main group chemistry has been fuelled by the remarkable array of fundamentally interesting yet synthetically applicable low oxidation state p-block compounds that have appeared over the last ... -
Evidence for the first oxidative addition of a transition metal into a digallane(4): Synthesis, structural characterisation and EPR studies of [Cp2ZrIII{Ga[N(Ar)C(H)]2}2][Li(THF)4], Ar = C6H3Pri2-2,6.
(2005)Treatment of “ZrCp2” with the digallane(4), [{Ga[N(Ar)C(H)]2}2], Ar = C6H3Pri2-2,6, in the presence of excess BunLi leads to the first example of a gallyl–Group 4 complex, [Cp2Zr{Ga[N(Ar)C(H)]2}2][Li(THF)4], via an ... -
Oxidation reactions of an anionic gallium(I) N-heterocyclic carbene analogue with group 16 compounds.
(2005)The reactivity of an anionic gallium(I) heterocycle, [K(tmeda)][:Ga([N(Ar)C(H)]2)], Ar = C6H3Pr(i)2-2,6, towards sources of elemental chalcogens and diorgano-dichalcogenides has been investigated and comparisons drawn with ...
