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5.341 Aktuelle Fachpublikationen zum Thema temperature

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Rapid and convenient synthesis of stable silver nanoparticles with kiwi juice and its novel application for detecting protease K

17.12.2014 | Bin Bin Chen; Hai Liu; Cheng Zhi Huang; Jian Ling; Jian Wang, New Journal of Chemistry, 2014

In this work, kiwi juice functioned as the reducing and capping reagent to obtain stable silver nanoparticles (AgNPs), which was very effective and inexpensive. Importantly, it could be finished within 2 min at room temperature, making the synthesis much faster and easier. Compared with the most ...

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Synergism between polyurethane and polydopamine in the synthesis of Ni-Fe alloy monoliths

17.12.2014 | Thangavel Nareshkumar; Santhana Sivabalan; Naveen Chandrasekaran; Phani KLN, Chemical Communication, 2014

Herein, we report the first synthesis of light-weight macroporous 3-D alloy monolith of Ni-Fe/C using synergism between polydopamine (pDA) and polyurethane (pU); in situ formed polyurethane (pU) enables efficient mixing of pDA (carbon source) and Ni-FeOx resulting in Ni-Fe alloy monoliths at a ...

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Fluorine magic: one new organofluorine linker leads to three new metal–organic frameworks

17.12.2014 | K. Peikert; F. Hoffmann; M. Fröba, CrystEngComm, 2014

We present 2-fluoro-1,3,5-benzene-tricarboxylic acid (Fbtc) as new linker for metal–organic frameworks. Interestingly, even slight variations of the synthesis conditions such as temperature or the molar ratio of metal to linker lead to three new MOFs, which we call UHM-31, UHM-32 and UHM-33. ...

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Surfactant-Free Synthesis of SrTiO3 Hierarchical Structures in an Ethanol/Water Mixed Solvent at Room Temperature

17.12.2014 | Qingsong Wu; Jianwei Liu; Shaofeng Chen; Haiwei Liang; Shu-Hong Yu, CrystEngComm, 2014

Perovskites are a family of important functional materials with excellent ferroelectric, dielectric, pyroelectric, piezoelectric, and electro-optic properties and potential for novel applications. The synthesis methodology for perovskites usually involves harsh conditions. Here, we report a ...

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Chemoselective Efficient Synthesis of Functionalized [small beta]-oxonitriles through Cyanomethylation of Weinreb Amides

16.12.2014 | Ashenafi Damtew Mamuye; Laura Castoldi; Ugo Azzena; Wolfgang Holzer; Vittorio Pace, Organic & Biomolecular Chemistry, 2014

A synthesis of β-oxonitriles is reported via the generation of R1R2CLiCN species followed by the trapping with variously decorated Weinreb amides. The optimization study revealed that lithiation of acetonitriles is best accomplished by deprotonation with MeLi-LiBr at low temperature. The protocol ...

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Trithiacrown palladium(II) complexes with cyclometallating ligands: Isomer effects, intramolecular palladium–sulfur interactions, and reversible PdII/III and PdIII/IV oxidations

14.12.2014 | Author(s): Daron E. Janzen , Meaghan A. Bruening , Catherine A. Sutton , Amrita R. Sharma, Journal of Organometallic Chemistry, 2014

Publication date: 1 February 2015 Source:Journal of Organometallic Chemistry, Volume 777 Author(s): Daron E. Janzen , Meaghan A. Bruening , Catherine A. Sutton , Amrita R. Sharma We report the synthesis and characterization of a series of cyclometallated complexes of Pd(II) ...

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Synthesis and Characterization of Sodium 5‐Chlorotetrazolate Dihydrate by Chlorination of 1H‐Tetrazole

12.12.2014 | Xiaojun Wang, Jiping Liu, Dong Wang, Xiaolu Bi, Wei Zhao, Zeitschrift für anorganische und allgemeine Chemie, 2014

Abstract A convenient, simple work‐up procedure and low‐cost chlorination method was developed to prepare sodium 5‐chlorotetrazolate dihydrate by chlorination of self‐prepared 1H‐tetrazole with sodium hypochlorite solution. Several organic extracting solvents and factors (raw material ratio, ...

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Design, Synthesis and Characterization of Coordination Polymer from [Cu(DMF)4(SCN)2] as a Precursor

12.12.2014 | Xiaotong Liu, Feng Zhou, Qiuxuan Zhou, Lihua Wang, Yong Zhang, Qingfeng Xu, Jianmei Lu, Chinese Journal of Chemistry, 2014

Abstract This paper is focused on investigation of coordination polymers constructed by Cu(II) and rigid pyridyl ligands, such as 4,4′‐bipyridyl‐1,2,4‐triazole (Hpytz) and 1,10‐phenanthroline (phen) from a mononuclear precursor [Cu(DMF)4(NCS)2] (1). As expected, the complex was self‐assembled ...

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Synthesis of Borophosphonate Cage Compounds: Influence of Substituent and Concentration Effects on Product Distribution in Condensation Reactions of Aryl Phosphonic Acids and Boronic Acids

12.12.2014 | Qian Liu; Nathan D. Contrella; Alexander S. Filatov; Richard F. Jordan, Organometallics, 2014

Aryl borophosphonate cage compounds [ArPO3BAr′]n with n = 4 or 6 were synthesized by condensation reactions of ArP(O)(OH)2 and Ar′B(OH)2. (3,5-tBu2-Ph)P(O)(OH)2 (1) reacts with arylboronic acids that contain electron-withdrawing substituents to form borophosphonate tetramers [Ar1PO3BAr2]4 (Ar1 = ...

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Strongly Phosphorescent Neutral Rhenium(I) Isocyanoborato Complexes: Synthesis, Characterization, and Photophysical, Electrochemical, and Computational Studies

11.12.2014 | Wing‐Kin Chu, Xi‐Guang Wei, Shek‐Man Yiu, Chi‐Chiu Ko, Kai‐Chung Lau, Chemistry - A European Journal, 2014

Abstract A new series of neutral isocyanoborato rhenium(I) diimine complexes [Re(CO)3(N^N)(CNBR3)], where N^N=bpy, 4,4′‐Me2bpy, phen, 4,7‐Me2phen, 2,9‐Me2phen, 3,4,7,8‐Me4phen; R=C6F5, C6H5, Cl, 4‐ClC6H4, 3,5‐(CF3)2C6H3, with various isocyanoborate and diimine ligands of diverse electronic and ...

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