Site-selective C(sp 3 )-H alkenylation was achieved under photo-irradiation in the presence of a catalytic amount of decatungstate anion, W 10 O 32 4À . In this reaction, the radical addition/β-scission sequence is successfully combined with photocatalytic C(sp 3 )-H functionalization. The reaction using weaker CÀ H bonds such as those in THF revealed that the benzenesulfonyl radical itself underwent HAT directly from the CÀ H bond, and a decatungstate anion participated in a chain-repairing step.
The oxidative cleavage of C�C bonds with molecular oxygen was promoted effectively by a catalytic amount of a decatungstate photocatalyst using black light irradiation (365 nm). Not only aromatic ketones but also aliphatic ketones were obtained by the photocatalytic protocol. The continuous flow reaction of α-methylstyrene using a highpower ultraviolet light-emitting diode (365 nm) dramatically decreased the reaction time.
Photocatalytic C(sp3)-H allylation, alkynylation, and imination using unsaturated benzenesulfonyl compounds were studied using decatungstate anion, W10O324−, as photocatalyst. In all these reactions, site-selective C(sp3)-H bond cleavage was successfully combined with the radical addition/β-scission sequence.
We have synthesized a series of pure hexagonal YMn1−xFexO3 (0 ≤ x ≤ 0.2) nanocrystalline materials by a modified Pechini method and study the effect of substituting Fe for Mn on the antiferromagnetic (AFM) phase transition in YMnO3 nanocrystalline materials using magnetic and dielectric measurements. The magnetic characterization indicates that with increasing Fe-content, up to 0.2, the AFM transition temperature increases from 60 to 72 K. Variable temperature dielectric measurements show an anomaly in the dielectric constant at temperatures close to the AFM ordering temperature for all of the compositions. A corresponding shift of the peak-positions of the dielectric anomaly and magnetic ordering indicates a unique correlation between the magnetic ordering and the electric polarization. The enhancement of the multiferroic ordering temperature in YMn1−xFexO3 nanocrystalline materials is explained on the basis of an increase in the covalence of the Mn/Fe-O-Mn/Fe bonds with iron doping.
Reconstitution of spatially organized molecular assemblies using the PLCδ1-PH and PIP2 interaction in cell-sized, phase-separated liposomes generated by an integrated strategy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.