20.05.2013 | Author(s): Karel Zdansky , James H. Dickerson, Sensors and Actuators B: Chemical, 2013

Publication date: 31 July 2013 Source:Sensors and Actuators B: Chemical, Volume 184 Author(s): Karel Zdansky , James H. Dickerson The electrophoretic deposition (EPD) of nanoparticles (NPs) of the catalytic metal platinum (Pt) onto semiconductor wafers of indium phosphide (InP) from ...

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17.05.2013 | Ashkan Dehsorkhi; Ian W. Hamley; Jani Seitsonen; Janne Ruokolainen, Langmuir, 2013

The enzymatic cleavage of a peptide amphiphile (PA) is investigated. The self-assembly of the cleaved products is distinct from that of the PA substrate. The PA C16-KKFFVLK is cleaved by α-chymotrypsin at two sites leading to products C16-KKF with FVLK and C16-KKFF with VLK. The PA ...

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16.05.2013 | Yamina A. Dávila; Matias I. Sancho; María C. Almandoz; Sonia E. Blanco, Journal of Chemical & Engineering Data, 2013

The acid dissociation constants (pKa) of 7-hydroxyflavone, 3-hydroxyflavone and 5-hydroxyflavone, which are practically insoluble compounds in water but of great biological and physicochemical interest, were determined by UV–visible spectroscopy in ethanol–water and acetonitrile–water ...

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15.05.2013 | Robert Kretschmer, Zhe‐Chen Wang, Maria Schlangen, Helmut Schwarz, Angewandte Chemie International Edition, 2013

Crime scene: NH bond activation. When ammonia gets in the crosshairs of [Al2O3].+ the reaction is not limited to a single hydrogen‐atom transfer, double hydrogen abstraction takes place as well and free nitrene is liberated at room temperature. These results are confirmed by mass ...

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15.05.2013 | Anca Anastasopol; Tobias V. Pfeiffer; Joost Middelkoop; Ugo Lafont; Roger J. Canales-Perez; Andreas Schmidt-Ott; Fok ..., Journal of the American Chemical Society, 2013

Spark discharge generation was used to synthesize Mg–Ti nanocomposites consisting primarily of a metastable body-centered-cubic (bcc) alloy of Mg and Ti. The bcc Mg–Ti alloy transformed upon hydrogenation into the face-centered-cubic fluorite Mg1-yTiyHx phase with favorable hydrogen storage ...

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14.05.2013 | Vasily Dzyabura; Mohamed Zaghoo; Isaac F. Silvera, Proceedings of the National Academy of Sciences current issue, 2013

We use pulsed-laser heating of hydrogen at static pressures in the megabar pressure region to search for the plasma phase transition to liquid atomic metallic hydrogen. We heat our samples substantially above the melting line and observe a plateau in a temperature vs. laser power curve that ...

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13.05.2013 | Author(s): Leonid I. Trakhtenberg , Anatoly A. Fokeyev , Alexander M. Mebel, Chemical Physics Letters, 2013

Publication date: Available online 7 May 2013 Source:Chemical Physics Letters Author(s): Leonid I. Trakhtenberg , Anatoly A. Fokeyev , Alexander M. Mebel Intramolecular tunneling of hydrogen and deuterium atoms in noble gas matrices (Ar, Kr and Xe) has been studied theoretically for ...

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13.05.2013 | Mutsuo Tanaka; Takahiro Sawaguchi; Masashi Kuwahara; Osamu Niwa, Langmuir, 2013

In order to scrutinize potential of trialkoxysilanes to form close-packed monolayer, surface modification of silicon oxide was carried out with the trialkoxysilanes bearing a ferrocene moiety for analysis by electrochemical methods. As it was found that hydrogen-terminated silicon reacts with ...

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08.05.2013 | Yiming Lu; Aliaksandr Zhuk; Li Xu; Xing Liang; Eugenia Kharlampieva; Svetlana A. Sukhishvili, Soft Matter, 2013

We report on weak polyacid brushes with highly tunable pH and temperature response characteristics. This was achieved by synthesizing a series of homo- and copolymers which contain 2-alkylacrylic acids (aAAs) of increased hydrophobicity, i.e. acrylic acid (AA), methacrylic acid (MAA), or ...

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08.05.2013 | Benjamin Koeppe; Jing Guo; Peter M. Tolstoy; Gleb S. Denisov; Hans-Heinrich Limbach, Journal of the American Chemical Society, 2013

Heteroconjugated hydrogen-bonded anions A···H···X– of phenols (AH) and carboxylic/inorganic acids (HX) dissolved in CD2Cl2 and CDF3/CDF2Cl have been studied by combined low-temperature UV–vis and 1H/13C NMR spectroscopy (UVNMR). The systems constitute small molecular models of hydrogen-bonded ...

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