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5.786 Aktuelle Fachpublikationen zum Thema temperature

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Self-assembly and Fibrillization of a Fmoc-functionalized polyphenolic amino acid

18.09.2013 | Abhijit Saha; Sreenath Bolisetty; Stephan Handschin; Raffaele Mezzenga, Soft Matter, 2013

Self-assembly of Fmoc-L-DOPA leads to the formation of twisted fibers at pH 2. Temperature dependent Circular Dichroism (CD) reveals the formation of a linear superstructure via π-π stacking. SAXS experiments together with TEM imaging confirm the existence of semi flexible twisted- multistranded ...


Soft-chemical synthesis, characterization and humidity sensing behavior of WO3/TiO2 nanopowders

16.09.2013 | Author(s): S.M. Zanetti , K.O. Rocha , J.A.J. Rodrigues , E. Longo, Sensors and Actuators B: Chemical, 2013

Publication date: January 2014 Source:Sensors and Actuators B: Chemical, Volume 190 Author(s): S.M. Zanetti , K.O. Rocha , J.A.J. Rodrigues , E. Longo Tungsten oxide/titania (WO3/TiO2) nanopowders were synthesized by the polymeric precursor method which varied the WO3 content between 0 ...


Flavour generation during commercial barley and malt roasting operations: A time course study

16.09.2013 | Author(s): Hafiza Yahya , Robert S.T. Linforth , David J. Cook, Food Chemistry, 2013

Publication date: 15 February 2014 Source:Food Chemistry, Volume 145 Author(s): Hafiza Yahya , Robert S.T. Linforth , David J. Cook The roasting of barley and malt products generates colour and flavour, controlled principally by the time course of product temperature and moisture ...


Electroless Deposition of Platinum Nanoparticles in Room-Temperature Ionic Liquids

13.09.2013 | Da Zhang; Takeyoshi Okajima; Dalin Lu; Takeo Ohsaka, Langmuir, 2013

The electroless deposition of Pt nanoparticles (Pt-NPs) could be carried out by dissolving potassium tetrachloroplatinate(II) (K2[PtCl4]) in 1-ethyl-3-methylimidazolium (EMI+) room-temperature ionic liquids (RTILs) containing bis(trifluoromethylsulfonyl) imide (NTf2–) or tetrafluoroborate (BF4–) ...


Shape Evolution of “Multibranched” Mn–Zn Ferrite Nanostructures with High Performance: A Transformation of Nanocrystals into Nanoclusters

13.09.2013 | Jun Xie; Changzhi Yan; Yu Zhang; Ning Gu, Chemistry of Materials, 2013

Monodisperse magnetic Mn–Zn ferrite nanostructures with various morphologies have been successfully synthesized via high-temperature decomposition of metal acetylacetonate (acac) in the presence of oleic acid (OA) and oleyamine (OAm). In a classical crystal nucleation/growth process, differential ...


Synthesis and Reactivity of the CO2 Adducts of Amine/Bis(2,4,6-tris(trifluoromethyl)phenyl)borane Pairs

12.09.2013 | Zhenpin Lu; Yuwen Wang; Jia Liu; Yue-jian Lin; Zhen Hua Li; Huadong Wang, Organometallics, 2013

Frustrated Lewis pairs (FLPs) comprised of bis(2,4,6-tris(trifluoromethyl)phenyl)borane (1) and a secondary amine (such as HNiPr2 or HNEt2) readily react with CO2 at room temperature to afford ammonium carbamatoborate salts 2. When the reaction was carried out at 80 °C, carbamate boryl esters 3 ...


Effect of the Fast Pyrolysis Temperature on the Primary and Secondary Products of Lignin

11.09.2013 | Shuai Zhou; Manuel Garcia-Perez; Brennan Pecha; Sascha R. A. Kersten; Armando G. McDonald; Roel J. M. Westerhof, Energy & Fuels, 2013

This paper presents results on the primary pyrolysis products of organosolv lignin at temperatures between 360 and 700 °C. To study the primary products, a vacuum screen heater (heating rate of 8000 °C/s, deep vacuum of 0.7 mbar, and very fast cooling at the wall temperature of −100 °C) was used. ...


Investigation about Temperature Effects on Soot Mechanisms Using a Phenomenological Soot Model of Real Biodiesel

11.09.2013 | Xiaojie Bi; Xinqi Qiao; Chia-fon F. Lee, Energy & Fuels, 2013

A phenomenological soot model of real biodiesel was proposed to investigate the effects of initial ambient temperatures on combustion and soot emission characteristics of soybean biodiesel. Validation experiments were conducted in an optically accessible constant volume chamber under four ...


Encapsulated Monoclinic Sulfur for Stable Cycling of Li–S Rechargeable Batteries

10.09.2013 | San Moon, Young Hwa Jung, Wook Ki Jung, Dae Soo Jung, Jang Wook Choi, Do Kyung Kim, Advanced Materials, 2013

Monoclinic S8, an uncommon allotrope of sulfur at room temperature, can be formed when common orthorhombic S8 is heat‐treated under enclosed environments in nanometer dimensions. Monoclinic S8 prevents the formation of soluble polysulfides during battery operation, resulting in unprecedented ...


Mechanistic Studies on the Pd-Catalyzed Vinylation of Aryl Halides with Vinylalkoxysilanes in Water: The Effect of the Solvent and NaOH Promoter

10.09.2013 | Alvaro Gordillo; Manuel A. Ortuño; Carmen López-Mardomingo; Agustí Lledós; Gregori Ujaque; Ernesto de Jesús, Journal of the American Chemical Society, 2013

The mechanism of the Pd-catalyzed vinylation of aryl halides with vinylalkoxysilanes in water has been studied using different catalytic precursors. The NaOH promoter converts the initial vinylalkoxysilane into a highly reactive water-soluble vinylsilanolate species. Similarly, deuterium-labeling ...


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