Browsing Chemistry (Scholarly Publications) by Sponsor "Irish Research Council for Science and Engineering Technology (IRCSET)"
Now showing items 1-20 of 36
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Aggregation of dinuclear {Fe2hpdta} units to form polynuclear oxy/hydroxy-bridged Fe(III) coordination complexes.
(2010)An approach for the preparation of oxy/hydroxy briged FeIII clusters that takes advantage of hydrolytic condensations of well defined {Fe2hpdta(H2O)4} building units is presented. Co-ligands such as tripodal H3tea or ... -
Cell Proliferation Tracking Using Graphene Sensor Arrays
(2012)The development of a novel label-free graphene sensor array is presented. Detection is based on modification of graphene FET devices and specifically monitoring the change in composition of the nutritive components in ... -
Chemoselective crossed acyloin condensations: catalyst and substrate control
(2011)The interplay between catalyst and substrate control in crossed acyloin condensation reactions has been studied. It was found that a pentafluorophenyl-substituted triazolium ion derived catalyst was capable of catalyzing ... -
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 ... -
Colorimetric and fluorescent anion sensors: An overview of recent developments in the use of 1,8-naphthalimide-based chemosensors
(2010)This critical review focuses on the development of anion sensors, being either fluorescent and/or colorimetric, based on the use of the 1,8-naphthalimide structure; a highly versatile building unit that absorbs and emits ... -
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 ... -
Controlled carboxylic acid introduction: a route to highly purified oxidized single walled carbon nanotubes
(2011)A chemical treatment for preparing high purity selectively oxidised SWNTs while preserving optical/ electronic properties of the material has been developed. Efficient removal of both metal and carbonaceous impurities ... -
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 ... -
Demonstration of bidirectional photoinduced electron transfer (PET) sensing in 4-amino-1,8-naphthalimide based thiourea anion sensors
(2009)The thiourea based 4-amino-1,8-naphthalimide molecules 1-5 were designed as fluorescent anion sensors and their photophysical properties investigated upon recognition of biologically relevant anions such as acetate, ... -
The Effect of Downstream Plasma Treatments on Graphene Surfaces
(2012)This paper reports on the effects of growth, transfer and annealing procedures on graphene grown by chemical vapour deposition. A combination of Raman spectroscopy, electrical measurements, atomic force microscopy, and ... -
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. ... -
An EXAFS and HR-XANES Study of the Uranyl Peroxides [UO2(η2-O2)(H2O)2].nH2O (n = 0,2) and Uranyl (Oxy)hydroxide [(UO2)4O(OH)6].6H2O
(2014)The solid-sate structures of the two uranyl peroxides studtite, [UO 2 ( ? 2 -O 2 )(H 2 O) 2 ]?2H 2 O, and metastudtite [UO 2 ( ? 2 -O 2 )(H 2 O) 2 ] have been determined by U ? L 3 edge extended ... -
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 ... -
Highly chemoselective direct crossed aliphatic- aromatic acyloin condensations with triazolium-derived carbene catalysts
(2011)It has been shown for the first time that triazolium pre-catalysts promote (in the presence of base) highly chemoselective crossed acyloin condensation reactions between aliphatic and ortho-substituted aromatic aldehydes. ... -
Kinetic resolution of sec-alcohols using a new class of readily assembled (S)-proline-derived 4-(pyrrolidino)-pyridine analogues
(2005)We report the development of a new class of readily prepared chiral 4-(pyrrolidino)-pyridine catalysts capable of exploiting both van der Waals (?) and H-bonding interactions, thus allowing remote chiral information to ... -
Lanthanide luminescence sensing of copper and mercury ions using an iminodiacetate based Tb(III)-cyclen chemosensor
(2010)The design, synthesis and photophysical evaluation of 1.Tb.Na, a Tb(III)-cyclen based sensor, possessing a phenyl iminodiacetate based receptor, for the selective detection of Cu(II) and Hg(II) ions in water is demonstrated. ... -
Luminescence anion sensing via modulation of MLCT emission from a naphthalimide-Ru(II)-polypyridyl complex
(2010)The selective sensing of fluoride (F?; an important breakdown product of some chemical warfare agents such as sarin) was achieved by observing quenching in the Metal to Ligand Charge Transfer (MLCT) emission of the ... -
Magnetoresistance of Fe3O4-graphene-Fe3O4 junctions
(2011)The magnetoresistance (MR) of Fe3O4-graphene-Fe3O4 junctions has been experimentally studied at different temperatures. It is found that a barrier exists at the Fe3O4/graphene interface. The existence of the interfacial ... -
NHC-Catalysed, chemoselective crossed-acyloin reactions
(2012)It has been shown for the first time that relatively electron deficient triazolium pre-catalysts promote (at low loadings in the presence of base) highly chemoselective crossed acyloin condensation reactions between aldehydes ... -
Novel amine-catalysed hydroalkoxylation reactions of alkenes and alkynes
(2005)Substoichiometric loadings of DBU catalyse the efficient 1,4- addition of alcohols and non-nucleophilic amines such as pyrrole to activated alkenes; the application of this methodology in a one-pot synthesis of a natural ...