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43.413 Aktuelle Fachpublikationen zum Thema temperature

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Hydrogen-bond relaxation dynamics: Resolving mysteries of water ice

26.10.2014 | Author(s): Yongli Huang , Xi Zhang , Zengsheng Ma , Yichun Zhou , Weitao Zheng , Ji Zhou , Chang Q. Sun, Coordination Chemistry Reviews, 2014

Publication date: Available online 23 October 2014 Source:Coordination Chemistry Reviews Author(s): Yongli Huang , Xi Zhang , Zengsheng Ma , Yichun Zhou , Weitao Zheng , Ji Zhou , Chang Q. Sun We present recent progress in understanding the anomalous behavior of water ice under ...

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INS, DFT and temperature dependent IR investigations of dynamical properties of low temperature phase of choline chloride

26.10.2014 | Author(s): A. Pawlukojć , Ł. Hetmańczyk, Chemical Physics, 2014

Publication date: Available online 18 October 2014 Source:Chemical Physics Author(s): A. Pawlukojć , Ł. Hetmańczyk Within the framework of the research the inelastic neutron scattering and temperature dependent infra-red spectroscopy investigations of the low temperature phase of choline ...

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Biological evaluation of chitosan‐based in situ‐forming hydrogel with low phase transition temperature

25.10.2014 | Qi Feng Dang, Jing Quan Yan, Hong Lin, Cheng Sheng Liu, Xi Guang Chen, Qiu Xia Ji, Jing Li, Ya Liu, Journal of Applied Polymer Science, 2014

ABSTRACT The aims of current study were to choose a method for preparing sterile chitosan‐α,β‐glycerophosphate (CS‐α,β‐GP) in situ‐forming hydrogel which had potential applications in tissue engineering and evaluated its biocompatibility and degradation characteristics. The results of ...

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New Benzo[1,2‐b:4,5‐b′]dithiophene‐Based Small Molecules Containing Alkoxyphenyl Side Chains for High Efficiency Solution‐Processed Organic Solar Cells

25.10.2014 | Zhengkun Du, Weichao Chen, Shuguang Wen, Shanlin Qiao, Qian Liu, Dan Ouyang, Ning Wang, Xichang Bao, Renqiang Yang, ChemSusChem, 2014

Abstract A new acceptor–donor–acceptor (A–D–A) small molecule, namely, BDT‐PO‐DPP, based on the alkoxyphenyl (PO)‐substituted benzo[1,2‐b:4,5‐b′]dithiophene (BDT) derivative and the diketopyrrolopyrrole (DPP) unit was synthesized as an electron donor for solution‐processed small‐molecule ...

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Asymmetric Michael Addition of 5 H‐Oxazol‐4‐ones to Vinyl Sulfones: Stereoselective Synthesis of Monofluorinated Analogs of 2‐Tertiary Hydroxyl‐3‐Methyl‐Substituted Carboxylic Acidl Derivatives

24.10.2014 | Qian Liu, Baokun Qiao, Kek Foo Chin, Choon‐Hong Tan, Zhiyong Jiang, Advanced Synthesis & Catalysis, 2014

Abstract An asymmetric Michael addition of 5H‐oxazol‐4‐ones to vinyl sulfones has been developed. In the presence of 10 mol % of quinine‐based benzyl‐substituted thiourea as catalyst at 0 °C, the products could be obtained with excellent enantio‐ and diastereoselectivity (up to>99 % ee ...

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Reversible Topochemical Exsolution of Iron in BaFe2+2(PO4)2

24.10.2014 | Rénald David, Houria Kabbour, Dmitry Filimonov, Marielle Huvé, Alain Pautrat, Olivier Mentré, Angewandte Chemie International Edition, 2014

Abstract BaFe2+2(PO4)2 was recently prepared and identified as the first 2D‐Ising ferromagnetic oxide with an original reentrant structural transition driven by high‐spin Fe2+ ions arranged in honeycomb layers. Both long‐term air exposure and moderate temperature (T>375 °C) leads to ...

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Excimer Formation in a Confined Space: Photophysics of Ladderphanes with Tetraarylethylene Linkers

24.10.2014 | Chih‐Hsien Chen , Kamani Satyanarayana, Yi‐Hung Liu, Shou‐Ling Huang, Tsong‐Shin Lim, Tien‐Yau Luh, Chemistry - A European Journal, 2014

Abstract Communication between chromophores is vital for both natural and non‐natural photophysical processes. Spatial confinements offer unique conditions to scrutinize such interactions. Polynorbornene‐ and polycyclobutene‐based ladderphanes are ideal model compounds in which all ...

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Reversible Topochemical Exsolution of Iron in BaFe2+2(PO4)2

24.10.2014 | Rénald David, Houria Kabbour, Dmitry Filimonov, Marielle Huvé, Alain Pautrat, Olivier Mentré, Angewandte Chemie, 2014

Abstract BaFe2+2(PO4)2 was recently prepared and identified as the first 2D‐Ising ferromagnetic oxide with an original reentrant structural transition driven by high‐spin Fe2+ ions arranged in honeycomb layers. Both long‐term air exposure and moderate temperature (T>375 °C) leads to ...

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Structure, ferroelectric, ferromagnetic, and piezoelectric properties of Al‐modified BiFeO3–BaTiO3 multiferroic ceramics

24.10.2014 | Wei Zhou, Qiaoji Zheng, Ying Li, Qiang Li, Yang Wan, Min Wu, Dunmin Lin, physica status solidi (a), 2014

0.725BiFe1−xAlxO3–0.275BaTiO3 + 1 mol% MnO2 ceramics were prepared by a conventional ceramic technique. The effects of Al doping and sintering temperature on microstructure, piezoelectricity and magnetism of the ceramics were studied. The crystalline structures of BFO‐BT‐BA‐x ceramics sintered ...

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Effects of surface states on the oxidation behavior of 316LN stainless steel in high temperature pressurized water

24.10.2014 | Y.‐L. Guo, E.‐H. Han, J.‐Q. Wang, Materials and Corrosion, 2014

Nuclear grade 316LN stainless steel with different surface states are prepared: electropolished and ground to 240 grit. Surface topography, surface Volta potential distribution, and nanohardness distribution on cross‐sectional surface are investigated, respectively. Oxide films on the ground ...

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