6 research outputs found
Observation of defect complexes containing Ga vacancies in GaAsN
Positron annihilation spectroscopy was used to study GaAsN/GaAs epilayers. GaAsN layers were found to contain Ga vacancies in defect complexes. The density of the vacancy complexes increases rapidly to the order of 1018 cm−3 with increasing N composition and decreases after annealing at 700 °C. The anticorrelation of the vacancy concentration and the integrated photoluminescence intensity suggests that the Ga vacancy complexes act as nonradiative recombination centers.Peer reviewe
Mild and Efficient Synthesis of 2‐Indole‐2′‐oxazolines at Room Temperature—A Simple Access to Novel IndOX Ligands
PyOX-ligands: the asymmetric Henry reaction
Abstract: C 2 -dissymmetric PyOX-ligands have been applied to the asymmetric Henry reaction. This widely applicable reaction is easy to perform, requires no inert atmospheres or dry solvents, and gives good selectivities. By adjusting ligand side-chains, a significant impact on selectivities was observed
Synthesis of a novel carboxy functionalized PyOX-ligand
A short and convenient synthesis of a carboxy functionalized PyOX-core is presented. The carboxy functionality offers a wide variety of possibilities for further modification. In this paper, the core is functionalized with a mercapto tail.Peer reviewe
Ligand creation via linking - a rapid and convenient method for construction of novel supported PyOX-ligands
A novel supported amino alcohol linker was synthesized and utilized for attachment of picolinic acid derivatives onto different supports. When the resin bound molecule was further activated, the PyOX-moiety could be constructed reliably in enantiopure form. Furthermore, an efficient Pd-catalyzed modification of a picolinic acid derivative is presented.Peer reviewe