Publications associées à Amphétamine (classe)

Local structural investigation of hafnia-zirconia polymorphs in powders and thin films by X-ray absorption spectroscopy

Despite increasing attention for the recently found ferro- and antiferroelectric properties, the polymorphism in hafnia- and zirconia-based thin films is still not sufficiently understood. In the present work, we show that it is important to have a good qu ...

PERGAMON-ELSEVIER SCIENCE LTD2019

Charge transporting material for optoelectronic and/or photoelectrochemical devices

Michael Graetzel, Mohammad Khaja Nazeeruddin, Paul Gratia, Iwan Zimmermann, Inés Garcia Benito

The present invention relates to an optoelectronic and/or photoelectrochemical device comprising at least one organic-inorganic perovskite as sensitizer and at least one compound of formula (I) comprising one benzotrithiophene core Q, wherein each thiophen ...

2017

In Situ Tethering Strategies for the 3-Component Synthesis of Vicinal Amino Alcohols and Diamines via Pd-Catalyzed Carboetherification and Carboamination

Ugo Jonathan Orcel

Vicinal amino alcohols and diamines are privileged motifs in organic chemistry. As such, they have been targets of choice for exploring and developing novel and more efficient strategies in organic synthesis. In this context, the difunctionalization of ole ...

EPFL2017

Piezoelectric softening by Nb substitution in (Ba,Pb)ZrO

Dragan Damjanovic, Nava Setter, Nicola Marzari, Alberto Biancoli, David Bahati

Donor doping is commonly applied for softening of the piezoelectric and dielectric properties and facilitation of polarization switching in the ubiquitous Pb(Zr,Ti)O-3 [PZT] ceramics. The origin of the donor-dopant effects is not entirely clear. (Pb,Ba)ZrO ...

Wiley-Blackwell2017

Zinc-gold cooperative catalysis for the direct alkynylation of benzofurans

Jérôme Waser, Yifan Li

The direct alkynylation of benzofurans was achieved for the first time using the hypervalent iodine reagent 1-[(triisopropylsilyl)ethynyl]-1,2-benziodoxol-3(1H)-one (TIPS-EBX) based on the cooperative effect between a gold catalyst and a zinc Lewis acid. H ...

2013

Electrical Properties of Nb-, Ga-, and Y-Substituted Nanocrystalline Anatase TiO2 Prepared by Hydrothermal Synthesis

Michael Graetzel, Aravind Kumar Chandiran

Nanocrystalline anatase titanium dioxide powders were produced by a hydrothermal synthesis route in pure form and substituted with trivalent Ga3+ and Y3+ or pentavalent Nb5+ with the intention of creating acceptor or donor states, respectively. The electri ...

Wiley-Blackwell2012

Charge ordering in substituted and non-stoichiometric BaVS3

László Forró, Helmuth Berger, Ana Akrap

Among the correlated electronic systems, BaVS3 which exhibits both itinerant and localized states as well as a subtle interplay betwen charge, orbital, spin and lattice degrees of freedom, is a model system. Its electronic structure consists in a broad qua ...

2010

Structural Aspects of 1,3,5-Benzenetrisamides−A New Family of Nucleating Agents

Philip Pattison

Structural studies of substituted 1,3,5-benzenetrisamides, a new family of highly versatile and efficient nucleating and clarifying agents for polymeric materials, are reported. Subtle details of the molecular structure of these species are shown to have a ...

2009

Site selective functionalizations of fluorinated heterocycles

Heterocyclic chem. continues to be in the focus of life science-oriented research. Fluorine, a unique tool for finetuning biol. properties, offers an extra bonus in this context. The lecture features three pertinent issues. First, proven and novel routes t ...

2006

Preparation of asymmetrically substituted biaryldiphosphines and their use as cocatalysts for transition metal catalyzed enantioselective hydrogenation

Asym. substituted biaryldiphosphine ligands I (R1 = C1-6-alkyl or C3-10-cycloalkyl optionally substituted with one or more halogen atoms; R2 and R3 are equal and are C5-10-cycloalkyl or C1-6-alkyl, or R2 is C5-10-cycloalkyl or C1-6-alkyl, and R3 is aryl op ...

(Lonza AG, Switz.).2006