Browsing by Author "KELLY, JOHN MOFFAT"
Now showing items 1-20 of 22
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Advances in the synthesis of ZnO nanomaterials for varistor devices
(2013)ZnO based varistors are widely used for overvoltage protection in many electrical and electronic circuits, at voltages ranging from a few to over a million volts. By careful control of the microstructure, through ... -
Base-specific photocleavage of DNA induced by nanosecond U.V. pulsed laser radiation or methylene blue sensitisation
(1987)Excitation of DNA in neutral solution either with short-duration, intense pulses of excimer laser (248 nm) radiation or with low intensity red-ligh (633 nm) sensitisation by methylene blue causes cleavage of the DNA backbone ... -
C.I.D.N.P. enhancement of both organometallic and organic compounds in the thermal reaction of [Ti(CH2Ph)Cl(c-C5H 5)2] with CCl4
(1982)The thermal reaction of [Ti(CH,Ph)CI(q-C5H5)2] with CCI4 in r2HSb] enzene solution gives enhanced signals for both the starting titanium compound and product PhCH2CCI3, but not in titanocene dichloride or bibenzyl which ... -
Excited state dependent electron transfer of a rhenium-dipyridophenazine complex intercalated between the base pairs of DNA: a time-resolved UV-visible and IR absorption investigation into the photophysics of fac-[Re(CO)3(F2dppz)(py)]+ bound to either [poly(dA-dT)]2 or [poly(dG-dC)]2.
(2011)The transient species formed following excitation of fac-[Re(CO)3(F2dppz)(py)]+ (F2dppz = 11,12-difluorodipyrido[3,2-a:2?,3?-c]phenazine) bound to double-stranded polynucleotides [poly(dA-dT)]2 or [poly(dG-dC)]2 have ... -
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, ... -
Influence of polystyrenesulfonate on electron transfer quenching of ruthenium trisbipyridine luminescence by viologens: Non-covalent assembly and covalent tethering of the ruthenium complex
(2012)A new copolymer (RuB-PSS) of ruthenium(ii)bis-(2,2?-bipyridine)(4- vinyl 2,2?-bipyridine) and styrene sulfonate was prepared which tethers the ruthenium chromophore directly to the polymer backbone. The photophysical ... -
Isolation, Structure, Chemistry and Photochemistry of cis?bis(2,2'-bipyridyl)carbonylchlororuthenium(II) perchlorate
(1980)The molecular structure and chemical and photochemical reactions of [Ru(bpy)2(CO)Cl]+ClO4?, which has been isolated from the reaction of ruthenium trichloride and 2,2?-bipyridyl(bpy) in dimethylformamide, are described. -
Observation of pentacarbonylchromium on flash photolysis of exacarbonylchromium in cyclohexane solution
(1973)The first observable transient (lifetime > 50 ns) on flash photolysis of Cr(CO), is Cr(CO),, which is the precursor of two species previously assigned to the D,, and C,, forms of Cr(CO),, and now shown to arise ... -
Photochemistry of compounds of the main group elements
(1979)Photochemistry of Compounds of the Main Group Elements BY J. M. KELLY 1 Introduction Reports on the photochemistry of inorganic anions are discussed in the next section; those dealing with other compounds are considered ... -
Picosecond infrared probing of the vibrational spectra of transients formed upon UV excitation of stacked G-tetrad structures
(2007)The photophysical properties of stacked G-tetrads in diverse systems, including concentrated solutions of 59-guanosine monophosphate (59-GMP), polyguanylic acid (poly(G)) and the G-rich oligodeoxynucleotide sequence ... -
Reduction of Dipyrido [3,2-a:2',3'-c] phenazine (dppz) by Photolysis in Ethanol Solution
(2005)Photolysis of dipyrido-[3,2-a:2?,3?-c]-phenazine (dppz) (1) in ethanol solution leads to the formation of 9,14-dihydrodipyridophenazine (2), which has been characterised by detailed NMR analysis, UV/VIS absorption spectroscopy, ... -
Solvent dependent photophysics of fac-[Re(CO)3(11,12-X2dppz)(py)]+ (X = H, F or Me)
(2007)The photophysical properties of [Re(CO)3(dppz)(py)]+ (dppz = dipyrido-[3,2-a:2 ,3 -c] phenazine) (1) and its 11,12 substituted derivatives [Re(CO)3(dppzMe2)(py)]+ (2) and [Re(CO)3(dppzF2)(py)]+ (3) have been examined in ... -
Study of picosecond processes of an intercalated dipyridophenazine Cr(iii) complex bound to defined sequence DNAs using transient absorption and time-resolved infrared methods
(2014)Picosecond transient absorption (TA) and time-resolved infrared (TRIR) measurements of rac-[Cr(phen)2(dppz)]3+ (1) intercalated into double-stranded guanine-containing DNA reveal that the excited state is very rapidly ... -
A Study of the pH Dependence of Electronically Excited Guanosine Compounds by Picosecond Time-resolved Infrared Spectroscopy
(2009)The photophysical properties of 5?-guanosine monophosphate (5?-GMP) and polyguanylic acid {poly(G)} in D2O solutions of varying pH have been studied using picosecond transient infrared absorption spectroscopy. Whereas ... -
Substituted Dipyridophenazine Complexes of Cr(III): Synthesis, Enantiomeric Resolution and Binding Interactions with Calf Thymus DNA
(2010)[Cr(phen)2(X2dppz)]3+ {X = H, Me, or F} have been synthesised, characterised, and chromatographically resolved into their constituent D and K enantiomers. The DNA-binding interactions of each of the racemic complexes ... -
A Supramolecular Approach to Enantioselective DNA Recognition using Enantiomerically Resolved Cationic 4-Amino-1,8-Naphthalimide based Tröger s Base.
(2014)The synthesis and photophysical studies of two cationic Tröger's base (TB)-derived bis-naphthalimides 1 and 2 and the TB derivative 6, characterized by X-ray crystallography, are presented. The enantiomers of 1 and 2 are ... -
Synthesis and photophysical evaluation of a pyridinium 4-amino-1,8-naphthalimide derivative that upon intercalation displays preference for AT-rich double-stranded DNA
(2012)The synthesis, characterisation and solid state crystal structure of a cationic 4-amino-1,8-naphthalimide derivative (1) are described. The photophysical properties of 1 are shown to vary with the solvent polarity and ... -
Synthesis, properties, and X-ray crystal and molecular structures of homoleptic alkenyls of tin and chromium
(1983)Reaction of Li(CPh[double bond, length half m-dash]CMe2) with SnCl4 or CrCl3?3thf (thf = tetrahydrofuran) affords the isoleptic compounds Sn(CPh[double bond, length half m-dash]CMe2)4 or [Cr(CPh[double bond, length half ... -
Synthesis, spectroscopic and biological studies of a fluorescent Pt(ii) (terpy) based 1,8-naphthalimide conjugate as a DNA targeting agent.
(2013)The bi-functional complex [PtII(terpy)(py-naphth)](NO 3)2(1), incorporating both 2,2?:6?, 2??-terpyridine and 4-N,N?-dimethylamino-1,8-naphthalimide moieties, displays a high binding affinity for DNA as well as displaying ... -
Triangular silver nanoparticles: their preparation, functionalisation and properties
(2012)This paper reports our progress towards developing a reproducible and rapid method to prepare triangular silver nanoplates. The methods are all based on a seed-mediated procedure involving the reduction of silver ions with ...
