Chemistry (Scholarly Publications): Recent submissions
Now showing items 781-800 of 931
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A concise synthesis of asymmetrical N,N'-disubstituted guanidines
(2011)We present a new and concise method for the preparation of asymmetrical N,N?-disubstituted guanidines starting from thiourea via the reaction of N-Boc-protected N?-alkyl/aryl substituted thioureas with an amine in the ... -
Synthesis and spectroscopic studies of chiral CdSequantum dots
(2010)Using microwave irradiation, water soluble, optically active, penicillamine (Pen) capped CdSenanocrystals with broad spectral distribution (430?780 nm) of photoluminescence have been produced and studied by a range of ... -
Molecular Engineering of Nonplanar Porphyrin and Carbon Nanotube Assemblies- a Linear and Nonlinear Spectroscopic and Modeling Study
(2011)The importance of molecular conformation to the nature and strength of noncovalent interactions existing between a series of increasingly nonplanar tetraphenylporphyrin (TPP) derivatives and carbon nanotubes was systematically ... -
Simple but powerful: Phenanthroline-based small molecules for cellular imaging and cancer screening
(2011)A two-step synthetic procedure gives highly fluorescent phenanthroline molecular probes. The compounds localize in the endoplasmic reticulum and their potential as bioactive probes was evaluated. The materials are quickly ... -
Cation-π interactions: complexes of Guanidinium and simple aromatic systems
(2011)We have theoretically studied, in gas phase and using PCM-water solvation, the complexes established by the biologically relevant guanidinium cation and simple aromatic systems (benzene, naphthalene and pyridine). In gas ... -
Synthesis, characterisation and biological evaluation of N-(ferrocenyl)naphthoyl amino acid esters as anticancer agents
(2010)A series of N-(ferrocenyl)naphthoyl amino acid esters 5?18 has been prepared by coupling ferrocenyl naphthoic acids 3?4 to ?-amino acids and linear amino acids in the presence of N-(3-dimethylaminopropyl)-N?-ethylcarbodiimide ... -
Chiral luminescent CdS nano-tetrapods
(Royal Society of Chemistry, 2010)The utilisation of chiral penicillamine stabilisers allowed the preparation of new water soluble white emitting CdS nano-tetrapods, which demonstrated circular dichroism in the band-edge region of the spectrum. -
The effect on the lanthanide luminescence of structurally simple Eu(III) cyclen complexes upon deprotonation of metal bound water molecules and amide based pendant arms
(2010)A series of substituted 1,4,7,10-tetraazacylcododecane ligands 1?4, possessing sensitizing nitrobenzene or naphthalene antennae, as one of the amide pendant arms, and their complexes with europium(III) were synthesised. ... -
Temperature Dependent Electrochemistry - a Versatile Tool for Investigations of Biology Related Topics
(Royal Society of Chemistry, 2009)Temperature dependent electrochemistry can be efficiently used to determine very different properties of the investigated system, such as thermodynamic parameters of redox processes (especially the entropy), the degeneration ... -
Modulating topologies and magnetic properties of coordination polymers using 2,2-bipyridine and 5-aminodiacetic isophthalic acid as ligands
(2009)We describe a synthetic methodology to prepare 1D coordination polymers using 5-aminodiacetic isophthalic acid (H4adip) as chelating agent and 2,2?-bipyridine (bpy) as an auxiliary ligand. The function of the latter is to ... -
Organic Functionalisation and Characterisation of Single-walled Carbon Nanotubes
(2009)Since carbon nanotubes (CNTs) display unique structures and remarkable physical properties, a variety of applications have emerged in both materials and life sciences. In terms of applications, the functionalisation of ... -
Crystallographic, 1H NMR and CD studies of sterically strained thiourea anion receptors possessing two stereogenic centres
(2009)The synthesis and structural characterisation of three chiral bis-naphthalene thiourea receptors (1?3) derived from (R)-(+)-1-(1-naphthyl)ethylamine and (S)-(?)-1-(1-naphthyl)ethylamine are reported along with spectroscopic ... -
Colorimetric sensing of anions in aqueous solution using a charge neutral, cleft-like, amidothiourea receptor: Tilting the balance between hydrogen bonding and deprotonation in anion recognition
(2008)The design, synthesis and physical evaluation of 1, a visible colorimetric `naked eye? pyridyl based bis-amidothiourea sensor for anions, is described. This charge neutral sensor gives rise to significant changes in the ... -
High performance ZnO varistors prepared from nanocrystalline precursors for miniaturised electronic devices
(2008)An industrially viable solution-based processing route using minimal amounts of solvent has been used to prepare bulk quantity nanopowders (average particle size 15 ? 3 nm) for the fabrication of ZnO varistors. The xerogels, ... -
Colorimetric 'naked-eye' and fluorescent sensors for anions based on amidourea functionalised 1,8-naphthalimide structures: Anion recognition via either deprotonation or hydrogen bonding in DMSO
(2008)The synthesis and the spectroscopic studies of three new amidourea-based sensors for anions, 1?3, are described. These are based on the use of 4-hydrazine-1,8-naphthalimides which upon reaction with isocyanates give rise ... -
Selective formation of the rctt chair stereoisomers of octa-O-alkyl resorcin[4]arenes using Br?nsted acid catalysis
(2008)New synthetic conditions are described for the fully selective formation of the rctt chair stereoisomers of octa-O-alkyl resorcin[4]arenes; these offer a clean route into the chair conformer of these interesting receptor ... -
Self-assembled rows of Ni porphyrin dimers on the Ag(111) surface
(2010)The growth and ordering of 5-(10,15,20-triphenylporphyrinatonickel(II))dimer (NiTPP-dimer) molecules on the Ag(111) surface have been investigated using scanning tunnelling microscopy/spectroscopy (STM/STS) and low-energy ... -
Excited state behaviour of substituted dipyridophenazine Cr(III) complexes in the presence of nucleic acids.
(2010)The photophysics and photochemistry of [Cr(phen)2(dppz)]3+ and its 11,12-substituted derivatives [Cr(phen)2(X2dppz)]3+ {X = Me or F} have been studied in the presence of purine nucleotides or DNA using steady state and ... -
Nature of the band gap of Tl2O3
(2011)Abstract: The ground state electronic structure of thallic oxide has been a source of controversy in the literature, with Tl2O3 reported to be either a degenerate n-type semiconductor or an intrinsic semimetal with no band ... -
A dipole polarizable potential for reduced and doped CeO(2) obtained from first principles.
(2011)In this paper we present the parameterization of a new interionic potential for stoichiometric, reduced and doped CeO2. We use a dipole polarizable potential (DIPPIM: the dipole polarizable ion model) and optimize its ...
