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Stacking disorder in ice I

11-11-2014 | Tamsin L. Malkin; Benjamin J. Murray; Christoph G. Salzmann; Valeria Molinero; Steven J. Pickering; Thomas F. Whale, Physical Chemistry Chemical Physics, 2014

Traditionally, ice I was considered to exist in two well-defined crystalline forms at ambient pressure: stable hexagonal ice (ice Ih) and metastable cubic ice (ice Ic). However, it is becoming increasingly evident that what has been called cubic ice in the past does not have a structure ...

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Conservation Weighting Functions Enable Covariance Analyses to Detect Functionally Important Amino Acids

07-11-2014 | Lucy J. Colwell et al., PLoS ONE, 2014

by Lucy J. Colwell, Michael P. Brenner, Andrew W. Murray The explosive growth in the number of protein sequences gives rise to the possibility of using the natural variation in sequences...

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Highly Specific Plasmonic Biosensors for Ultrasensitive MicroRNA Detection in Plasma from Pancreatic Cancer Patients

07-11-2014 | Gayatri K. Joshi; Samantha Deitz-McElyea; Merrell Johnson; Sonali Mali; Murray Korc; Rajesh Sardar, Nano Letters, 2014

MicroRNAs (miRs) are small noncoding RNAs that regulate mRNA stability and/or translation. Because of their release into the circulation and their remarkable stability, miR levels in plasma and other biological fluids can serve as diagnostic and prognostic disease biomarkers. However, quantifying ...

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Competitive formation of DNA linkage isomers by a trinuclear platinum complex and the influence of pre-association

04-11-2014 | Susan Berners-Price; Joseph J Moniodis; Donald S Thomas; Murray S Davies; Nicholas Patrick Farrell, Dalton Transactions, 2014

2D [1H, 15N] HSQC NMR spectroscopy has been used to monitor the reaction of fully 15N-labelled [{trans-PtCl(NH3)2}2(μ-trans-Pt(NH3)2{NH2(CH2)6NH2}2)]4+ (BBR3464 (15N-1)) with the 14-mer duplex (5'-{d(ATACATG(7)G(8)TACATA)}-3' . 5'-{d(TATG(18)TACCATG(25)TAT)}-3' or I) at pH 5.4 and 298 K, to ...

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Molecular characterization of organic content of soot along the centerline of a coflow diffusion flame

04-11-2014 | Jeremy Cain; Alexander Laskin; Mohammad Reza Kholghy; Murray J. Thomson; Hai Wang, Physical Chemistry Chemical Physics, 2014

High-resolution mass spectrometry coupled with nanospray desorption electrospray ionization was used to probe chemical constituents of young soot particles sampled along the centerline of a coflow diffusion flame of a three-component Jet-A1 surrogate. In lower positions where particles are ...

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Monodisperse Core/Shell Ni/FePt Nanoparticles and Their Conversion to Ni/Pt to Catalyze Oxygen Reduction

03-11-2014 | Sen Zhang; Yizhou Hao; Dong Su; Vicky V. T. Doan-Nguyen; Yaoting Wu; Jing Li; Shouheng Sun; Christopher B. Murray, Journal of the American Chemical Society, 2014

We report a size-controllable synthesis of monodisperse core/shell Ni/FePt nanoparticles (NPs) via a seed-mediated growth and their subsequent conversion to Ni/Pt NPs. Preventing surface oxidation of the Ni seeds is essential for the growth of uniform FePt shells. These Ni/FePt NPs have a thin ...

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Synthesis and Structure of New Lanthanoid Carbonate “Lanthaballs”

28-10-2014 | Anthony S. R. Chesman; David R. Turner; Stuart K. Langley; Boujemaa Moubaraki; Keith S. Murray; Glen B. Deacon; Stua ..., Inorganic Chemistry, 2014

New insights into the synthesis of high-nuclearity polycarbonatolanthanoid complexes have been obtained from a detailed investigation of the preparative methods that initially yielded the so-called “lanthaballs” [Ln13(ccnm)6(CO3)14(H2O)6(phen)18] Cl3(CO3)·25H2O [α-1Ln; Ln = La, Ce, Pr; phen = ...

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Stepped spin crossover in Fe(III) halogen substituted quinolylsalicylaldimine complexes

21-10-2014 | Wasinee Phonsri; David James Harding; Phimphaka Harding; Keith S. Murray; Boujemaa Moubaraki; Ian Gass; John D Cashi ..., Dalton Transactions, 2014

The reaction of Fe(NCS)3 prepared in situ in MeOH with Hqsal-X (Hqsal-X = 5-X-N-quinolylsalicylaldimine) in CH2Cl2 yields the FeIII complexes, [Fe(qsal-X)2]NCS·solvent (X = F 1; X = Cl, 2, Br, 3 solvent = MeOH; X = I, solvent = 0.25CH2Cl2·0.5MeOH 4) in moderate to good yields. IR spectroscopy ...

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Donor- and/or Acceptor-Substituted Expanded Radialenes: Theory, Synthesis, and Properties

20-10-2014 | Sharwatie Ramsaywack; Sila Karaca; Mojtaba Gholami; Adrian H. Murray; Frank Hampel; Robert McDonald; Nuran Elmaci; H ..., The Journal of Organic Chemistry, 2014

The synthesis of donor- (D) and/or acceptor (A)-expanded [4]radialenes has been developed on the basis of readily available dibromoolefin (7), tetraethynylethene (10 and 20), and vinyl triflate (12) building blocks. The successful formation of D/A radialenes relies especially on (1) effective use ...

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Highly efficient and selective phosphorylation of amino acid derivatives and polyols catalysed by 2-aryl-4-(dimethylamino)pyridine-N-oxides – towards kinase-like reactivity

14-10-2014 | James I. Murray; Rudiger Woscholski; Alan C. Spivey, Chemical Communication, 2014

The chemoselective phosphorylation of hydroxyl containing amino acid derivatives and polyols by phosphoryl chlorides catalyzed by 2-aryl-4-(dimethylamino)pyridine-N-oxides is described.

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