Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Avril Williams"'
Publikováno v:
Tetrahedron Letters. 56:5175-5179
The ability to predict the relative stabilities of analogous pseudorotaxanes is essential for the synthetic chemist yet simplified computational forecasting approaches remain scarce. Consequently, ten [2]pseudorotaxanes have been assembled (from a se
Autor:
Mawethu Pascoe Bilibana, Robert Tshikhudo, Nazeem Jaheed, Nurali Mohamed, Njagi Njomo, Abebaw Tsegaye, Hlamulo Makelane, Oluwakemi Tovide, Avril Williams, Emmanuel I. Iwuoha, Ezo Nxusani, Sibulelo Vilakazi, Christopher E. Sunday, Rachel Fanelwa Ajayi, Priscilla G. L. Baker
Publikováno v:
Electrochimica Acta. 128:138-148
A graphenated polyaniline/tungsten oxide (PANI/WO 3 /GR) nanocomposite sensor was prepared by electropolymerisation of a mixture of aniline monomer and tungsten oxide on a graphene-modified glassy carbon electrode (GCE). The PANI/WO 3 /GR/GCE nanocom
Autor:
Chinwe O. Ikpo, Avril Williams, Kerileng M. Molapo, Sibulelo Vilakazi, Robert Tshikhudo, Tesfaye Waryo, Priscilla G. L. Baker, Bulelwa Mpushe, Gertrude Fomo, Christopher E. Sunday, Sinazo Qakala, Gcineka Mbambisa, Emmanuel I. Iwuoha, Mawethu Pascoe Bilibana, Oluwakemi Tovide
Publikováno v:
Electrochimica Acta. 128:128-137
Charge transfer reactions of electroactive reagents in pure Nafion film are generally slow due to Nafion's compact nature and the poor diffusion of ionic species within the film. Cationic reagents, such as tris(bipyridine)ruthenium(II) ion ([Ru(bpy)3
Autor:
Kenneth I. Ozoemena, Chinwe O. Ikpo, Priscilla G. L. Baker, Avril Williams, Njagi Njomo, Christopher E. Sunday, Stephen Mailu, Natasha Ross, Milua Masikini, N. Matinise, Tesfaye Waryo, Emmanuel I. Iwuoha, Noluthando Mayedwa, Oluwakemi Tovide
Publikováno v:
Electrochimica Acta. 128:226-237
Nanostructured poly(4-styrene sulphonic acid) and tantalum (IV) oxide-doped polyaniline nanocomposite were synthesised and their electro-conductive properties were determined. The oxide was synthesized using a modified sol-gel method and then dispers
Autor:
Tesfaye Waryo, Avril Williams, Emmanuel I. Iwuoha, Priscilla G. L. Baker, Lundi V. Ngqongwa, Milua Masikini
Publikováno v:
Analytical Letters. 44:2047-2060
Amperometric sensors for the detection of bisphenol A (BPA) were developed by drop coating an amorphous hydroxy iron product (FeOx) and its composites with β-cyclodextrin (BCD) on the surface of glassy carbon electrodes (GCE). The composite material
Autor:
Natasha West, Tesfaye Waryo, Emmanuel I. Iwuoha, Priscilla G. L. Baker, Munkombwe Muchindu, Edmund John Pool, Nazeem Jahed, Avril Williams
Publikováno v:
Electroanalysis. 23:122-128
An impedimetric immunosensor for ochratoxin A (OTA) composed of polyaniline-polyvinyl sulfonate and anti-OTA antibody on Pt disk electrode was produced, characterised and calibrated with its responses to standard OTA solutions at pH 7.2. The limit of
Publikováno v:
Electroanalysis. 14:1177-1184
The complexing properties of the phenylsquarate ligand with Ru(II), Pt(II), Gd(III) and Tb(III) ions
Publikováno v:
Inorganica Chimica Acta. 314:117-125
Reaction of 3-phenyl-4-hydroxycyclobut-3-ene-1,2-dione (phenylsquarate) with Ru(dmso)4Cl2 in acetonitrile afforded crystals of the monomeric species Ru(dmso)3Cl(H2O)(C6H5C4O3)·H2O (1) in which the ruthenium is in a slightly distorted octahedral geom
Autor:
Avril Williams, Lincoln A. Hall, Charles C. Agosta, Bruce M. Foxman, Laurence K. Thompson, Bert D Alleyne, Hema Jaggernauth, Hazel-Ann Hosein
Publikováno v:
Inorganica Chimica Acta. 313:56-64
Reaction of 3-phenyl-4-hydroxycyclobut-3-ene-1,2-dione (phenylsquarate) with M(NO 3 ) 2 · x H 2 O (M=Mn, Co, Ni, Zn) in acetonitrile solutions produced a linear polymer [Mn(μ-C 6 H 5 C 4 O 3 )(C 6 H 5 C 4 O 3 )(H 2 O) 3 ] n ( 1 ) and a series of is
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 10(21)
Three constitutionally isomeric bis(naphthylmethyl)ammonium ions, in which the two naphthyl groups are substituted 1) both at their 1-positions, 2) one at its 1-position and the other at its 2-position, and 3) both at their 2-positions, have been inv