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44.381 Aktuelle Fachpublikationen zum Thema temperature

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Electronic band structure and low-temperature transport properties of the type-I clathrate Ba8NixGe46-x-y[square]y

01.04.2015 | U. Aydemir; C. Candolfi; A. Ormeci; M. Baitinger; U. Burkhardt; N. Oeschler; F. Steglich; Yu. Grin, Dalton Transactions, 2015

We present the evolution of the low-temperature thermodynamic, galvanomagnetic and thermoelectric properties of the type-I clathrate Ba8NixGe46−x−y [[square]] y with the Ni concentration studied on polycrystalline samples with 0.0 ≤ x ≤ 6.0 by means of specific heat, Hall effect, electrical ...


Dehydrogenation of ammonia-borane by cationic Pd(II) and Ni(II) complexes in a nitromethane medium: hydrogen release and spent fuel characterization

01.04.2015 | Sung-Kwan Kim; Sung-Ahn Hong; Ho-Jin Son; Won-Sik Han; Artur Michalak; Son-Jong Hwang; Sang Ook Kang, Dalton Transactions, 2015

A highly electrophilic cationic PdII complex, [Pd(MeCN)4][BF4]2 (1), brings about the preferential activation of the B–H bond in ammonia-borane (NH3·BH3, AB). At room temperature, the reaction between 1 in CH3NO2 and AB in tetraglyme leads to Pd nanoparticles and formation of spent fuels of the ...


Temperature driven p–n–p type conduction switching materials: current trends and future directions

01.04.2015 | Satya N. Guin; Kanishka Biswas, Physical Chemistry Chemical Physics, 2015

Modern technological inventions have been going through a “renaissance” period. Development of new materials and understanding of fundamental structure–property correlations are the important steps to move further for advanced technologies. In modern technologies, inorganic semiconductors are the ...


Self-assembly of luminescent N-annulated perylene tetraesters into fluid columnar phases

01.04.2015 | Ravindra Kumar Gupta; Suraj Kumar Pathak; Balaram Pradhan; D. S. Shankar Rao; S. Krishna Prasad; Ammathnadu S. Achal ..., Soft Matter, 2015

A new class of N-annulated perylene tetraesters and their N-alkylated derivatives has been synthesized. N-Annulated perylene tetraesters stabilize a hexagonal columnar phase over a broad temperature range. The hexagonal columnar phase exhibited by these compounds shows good homeotropic alignment ...


Layered MoS2 nanoparticles on TiO2 nanotubes by a photocatalytic strategy for use as high-performance electrocatalysts in hydrogen evolution reactions

01.04.2015 | Chenhui Meng; Zhaoyue Liu; Tierui Zhang; Jin Zhai, Green Chemistry, 2015

An environmentally-friendly photocatalytic strategy carried out at room temperature and atmospheric pressure without using toxic precursors was used to develop high-performance MoS2 nanoparticulate electrodes consisting of layered MoS2 nanoparticles on anodized TiO2 nanotubes (TiO2-NTs). TiO2-NTs ...


FD Electrolysis: Syngas Production by High Temperature Steam/CO2 Coelectrolysis Using Solid Oxide Electrolysis Cells

01.04.2015 | Xinbing Chen; Chengzhi Guan; Xiao Guoping; Xianlong Du; Jian-Qiang Wang, Faraday Discussions, 2015

High temperature (HT) steam/CO2 coelectrolysis with solid oxide electrolysis cells (SOECs) using the heat and power from clean energies is an important alternative for syngas production without fossil fuel consumptions and greenhouse gas emissions. Herein, reaction characteristics and outlet ...


Introducing a new radical trifluoromethylation reagent

01.04.2015 | Azusa Sato; Jianlin Han; Taizo Ono; Alicja Wzorek; José Luis Aceña; Vadim A. Soloshonok, Chemical Communication, 2015

Perfluoro-3-ethyl-2,4-dimethyl-3-pentyl radical (PPFR) is a persistent radical stable at room temperature, but easily decomposes at 90 °C to produce a CF3 radical which is able to react with a variety of aromatic compounds to afford the corresponding trifluoromethyl derivatives, usually as ...


An old workhorse for new applications: Fe(dpm)3 as a precursor for low-temperature PECVD of iron(III) oxide

01.04.2015 | G. Carraro; C. Maccato; A. Gasparotto; D. Barreca; M. Walter; L. Mayrhofer; M. Moseler; A. Venzo; R. Seraglia; C. Marega, Physical Chemistry Chemical Physics, 2015

An iron(iii) β-diketonate complex, Fe(dpm)3 (Hdpm = 2,2,6,6-tetramethyl-3,5-heptanedione), has been investigated as a potential precursor for plasma enhanced chemical vapor deposition (PECVD) of iron(iii) oxide nanomaterials. Thanks to the combined experimental–theoretical approach, spectroscopic ...


N-H[middle dot][middle dot][middle dot][small pi] induced configurational isomerism and the role of temperature in the Z to E isomerization of 2-fluoro-N-(3-fluorophenyl) benzimidamide

01.04.2015 | Deepak Chopra; Dhananjay Dey, CrystEngComm, 2015

We have investigated the role of N-H···π interaction in the formation of Z/E configurational isomers (including dimorphism in the E isomer) of 2-fluoro-Ń-(3-fluorophenyl)benzimidamide. The lowering of the crystallization temperature by ~20 C results in a new form (Z isomer). Single crystal X-ray ...


Condensation of vapor species at the outlets in the high temperature chemical vapor deposition using tetramethylsilane as the precursor for SiC bulk growth

01.04.2015 | Byeong Geun Kim; Ji-Young Yoon; Chang-Hyoung Yoo; Deok-Hui Nam; Myung-Hyun Lee; Won-Seon Seo; Seong-Min Jeong, CrystEngComm, 2015

High temperature chemical vapor deposition (HTCVD), an alternate method for crystal growth of SiC, was recently deemed to be a safe method when tetramethylsilane (TMS) is used. In this study, we report on the characteristics of condensation of vapor species as a function of geometric location and ...


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