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4.948 Aktuelle Fachpublikationen zum Thema temperature

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Remarkable Distinctions in the Heat-induced Phase Transition Processes of Two Poly(2-isopropyl-2-oxazoline)-based Mixed Aqueous Solutions

03.03.2015 | Tianjiao LI; Hui Tang; peiyi wu, Soft Matter, 2015

Detailed phase transition processes of poly (2-isopropyl-2-oxazoline) (PIPOZ)/ Poly (N-isopropylacrylamide) (PNIPAM) and PIPOZ/ poly (N-vinylcaprolactam) (PVCL) mixtures in aqueous solution were investigated by DSC, temperature-variable 1H-NMR, optical microscopy and FT-IR spectroscopy ...

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Structural, optical and electrical properties of electrodeposited cadmium selenide thin films for applications in photodetector and photoelectrochemical cell

01.03.2015 | Author(s): S. Mahato , A.K. Kar, Journal of Electroanalytical Chemistry, 2015

Publication date: 1 April 2015 Source:Journal of Electroanalytical Chemistry, Volume 742 Author(s): S. Mahato , A.K. Kar Nanocrystalline cadmium selenide (CdSe) thin films have been deposited on indium tin oxide (ITO) coated glass substrates at room temperature (28°C) by using simple two ...

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DNA encapsulated chain and wire-like [small beta]-MnO2 organosol for oxidative polymerization of pyrrole to polypyrrole

01.03.2015 | Sivasankara Rao Ede; S Anantharaj; U Nithiyanantham; Subrata Kundu, Physical Chemistry Chemical Physics, 2015

DNA encapsulated chain and wire-like β-MnO2 organosol had been synthesized utilizing a two phase water-toluene extraction procedure at room temperature (RT). The β-MnO2 organosol was prepared by transferring KMnO4 and the DNA from aqueous solution separately to the organic (toluene) solvent by ...

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Conformational Changes in a Hyperthermostable Glycoside Hydrolase: Enzymatic Activity Is a Consequence of the Loop Dynamics and Protonation Balance

27.02.2015 | Leandro C. de Oliveira et al., PLoS ONE, 2015

by Leandro C. de Oliveira, Viviam M. da Silva, Francieli Colussi, Aline D. Cabral, Mario de Oliveira Neto, Fabio M. Squina, Wanius Garcia Endo-β-1, 4-mannanase from Thermotoga petrophila (TpMan) is a modular hyperthermostable enzyme involved in the degradation of mannan-containing ...

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Temperature-Dependent Infrared and Calorimetric Studies on Arsenicals Adsorption from Solution to Hematite Nanoparticles

27.02.2015 | Md Abdus Sabur; Sabine Goldberg; Adrian Gale; Nadine Kabengi; Hind A. Al-Abadleh, Langmuir, 2015

To address the lack of systematic and surface sensitive studies on the adsorption energetics of arsenic compounds on metal (oxyhydr)oxides, we conducted temperature-dependent ATR-FTIR studies for the adsorption of arsenate, monomethylarsonic acid, and dimethylarsinic acid on hematite ...

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Spectroscopic Signature of Two Distinct H-Aggregate Species in Poly(3-hexylthiophene)

27.02.2015 | Fabian Panzer; Michael Sommer; Heinz Bässler; Mukundan Thelakkat; Anna Köhler, Macromolecules, 2015

In an endeavor to correlate the optoelectronic properties of π-conjugated polymers with their structural properties, we investigated the aggregation of P3HT in THF solution within a temperature range from 300 to 5 K. By detailed steady-state, site-selective, and time-resolved fluorescence ...

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Randomizing the Unfolded State of Peptides (and Proteins) by Nearest Neighbor Interactions between Unlike Residues

26.02.2015 | Siobhan E. Toal, Nina Kubatova, Christian Richter, Verena Linhard, Harald Schwalbe, Reinhard Schweitzer‐Stenner, Chemistry - A European Journal, 2015

Abstract To explore the influence of nearest neighbors on conformational biases in unfolded peptides, we combined vibrational and 2D NMR spectroscopy to obtain the conformational distributions of selected “GxyG” host–guest peptides in aqueous solution: GDyG, GSyG, GxLG, GxVG, where x/y=A, K, ...

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Preparation of Compact Nanoparticle Clusters from Polyethylene Glycol-Coated Gold Nanoparticles by Fine-Tuning Colloidal Interactions

26.02.2015 | Dániel Zámbó; György Z. Radnóczi; András Deák, Langmuir, 2015

Low-molecular weight polyethylene glycol (PEG) has a lower critical solution temperature well outside the boiling point of water at ambient pressure, but it can be reduced at high ionic strengths. We extend this concept to trigger the clustering of gold nanoparticles through the control of ...

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High-Performance Flexible Tandem Polymer Solar Cell Employing a Novel Cross-Linked Conductive Fullerene as an Electron Transport Layer

26.02.2015 | Chih-Yu Chang; Wen-Kuan Huang; Yu-Chia Chang; Kuan-Ting Lee; Hao-Yi Siao, Chemistry of Materials, 2015

A novel thermally cross-linkable, n-doped conductive fullerene material is developed by incorporating tetrabutylammonium iodide (TBAI) as the dopant into an azidofullerene derivative PCBN3. The application of TBAI-doped cross-linked PCBN3 film as the electron transport layer (ETL) in polymer ...

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A novel polyacrylamide‐based superabsorbent with temperature switch for steam breakthrough blockage

25.02.2015 | Xiaoyun Zhang, Xiangpeng Wang, Liang Li, Ruonan Wu, Sisi Zhang, Jihui Wu, Wei Wu, Journal of Applied Polymer Science, 2015

ABSTRACT A novel high‐temperature resistant superabsorbent polymer (SAP) with a temperature switch to control its water absorbency was prepared through solution polymerization of acrylamide (AM), using N,N‐methylenebisacrylamide (NMBA) and tetraallylammonium chloride (TAAC) as crosslinking ...

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