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387,511 Newest Publications
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Star mesogens — Synthesis and structural characterization using 1D and 2D solution NMR techniques and mesophase characterization
17-10-2013 | A. Shanavas, T. Narasimhaswamy, B.V.N. Phani Kumar, A. Sultan Nasar, Canadian Journal of Chemistry, 2013
Utilisant des approches divergentes, on a réalisé des synthèses de nouveaux mésogènes en forme étoilée à base d'acide trimésique et des portions centrales portant des chaînes latérales symétriques se terminant par des groupes alcoxy. Les portions centrales et les chaînes latérales sont liées ...
Thermodynamic control of oxidative addition and reductive elimination processes in cis-bis(dimethoxyboryl)-bis(tricyclohexylphosphine)platinum(II)
15-05-2013 | Holger Braunschweig; Alexander Damme, Chemical Communication, 2013
cis-[(Cy3P)2Pt{B(OMe)2}2] (1) was obtained in quantitative yield and fully characterised. The thermal stability of 1 was investigated in solution using multinuclear NMR spectroscopy revealing a hitherto unknown temperature-dependent equilibrium between 1 and the corresponding starting ...
Porphyrin sensitizers with [small pi]-extended pull units for dye-sensitized solar cells
15-05-2013 | Nagannagari Masi Reddy; Tsung-Yu Pan; Yesudoss Christu Rajan; Bo-Cheng Guo; Chi-Ming Lan; Eric Wei-Guang Diau; Chen- ..., Physical Chemistry Chemical Physics, 2013
New π-extended porphyrin dyes YD26–YD29 with long alkoxyl chains at the ortho positions of the meso-phenyls, and meta di-tert-butylphenyl-substituted porphyrins YD12–CN, and YD13–CN were synthesized for dye-sensitized solar cells, and their optical, electrochemical and photovoltaic properties ...
Fabrication of integrated porous glass for microfluidic applications
15-05-2013 | Sertan Sukas; Roald Tiggelaar; Gert Desmet; (Han) J G E Gardeniers, Lab on a Chip, 2013
This paper presents a method for the fabrication of integrated porous silica layers in microfluidic channel networks by microfabrication techniques. Porous silica is obtained by anodization of silicon, followed by full conversion of the porous silicon network into porous silica by means of ...
Electronic Excitation and Structural Relaxation of the Adenine Dinucleotide in Gas Phase and Solution
15-05-2013 | Felix Plasser; Hans Lischka, Photochemical & Photobiological Sciences, 2013
The excited states and potential surfaces of the adenine dinucleotide are analyzed in gas phase and solution using correlated ab-initio methodology in a QM/MM framework. In agreement with previous studies a rather flat S1 surface with a number of minima of different character is found. ...
Self-templating amphiphilic polysiloxanes to design nanostructured silica-based architectures
15-05-2013 | Abdelkrim El Kadib; Annie Finiels; Nathalie Marcotte; Daniel Brunel, Chemical Communication, 2013
The self-assembly and sol–gel polymerisation of novel alkoxysilane-functionalized polymethylsiloxanes provide versatile access to nano-assembled containers, silica-based micro- and nano-architectures and dispersed mixed metal oxide hybrid materials.
Formation of glycerol carbonate from glycerol and urea catalysed by metal monoglycerolates
15-05-2013 | Terence Turney; Antonio F Patti; William Gates; Uzma Shaheen; Sanjitha Kulasegaram, Green Chemistry, 2013
Polymeric monoglycerolate complexes of zinc and cobalt can act as homogeneous catalysts for the one-pot synthesis of glycerol carbonate from glycerol and urea. Effects of reaction temperature, time and glycerol to urea molar ratios on glycerol carbonate selectivity and glycerol conversion ...
Stress acidulated amphoteric molecules and mechanochromism via reversible intermolecular proton transfer
15-05-2013 | Yi Wang; Minjie Li; Yumo Zhang; Jin Yang; Shaoyin Zhu; Lan Sheng; Xudong Wang; Bing Yang; Sean Xiao-An Zhang, Chemical Communication, 2013
Stress has been proved to acidulate amphoteric molecules and promote an intermolecular proton transfer, which results in a significant absorption and emission change. The stress acidulated amphoteric molecules open a new avenue for developing mechanochromic materials and anticipate many broad ...
The Effect of Earth Metal ion on the Property of Peptide - based Metal-Organic Frameworks
15-05-2013 | Wu-lin Chen; Gui-lin Zhuang; Jian-guo Wang, CrystEngComm, 2013
A series of alkaline earth metal-based bio-analogous metal-organic frameworks (1-4 ) based on one cyclic dipeptide ( 2, 5-piperazinedione-1, 4-diacetic acid, H2PODC) were prepared under the same synthetical condition and the effect of earth meral ion on the (geometrical and electronic) ...
Evaluation of sample preparation procedures and krypton as interference standard probe for arsenic speciation by HPLC-ICP-QMS
15-05-2013 | Clarice Dias Britto do Amaral; Amalia G.G. Dionisio; Mirian C. Santos; George L Donati; Joaquim A Nobrega; Ana Rita ..., Journal of Analytical Atomic Spectrometry, 2013
Different conditions of extraction using water, methanol/water mixture and nitric acid solutions were evaluated for speciation of As(III), As(V), DMA and MMA in plant samples that previously received As(V) after sown and emergence were investigated. Microwave-assisted extraction (MAE) using ...
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