Amino acids were found to be as good ligands for copper-catalyzed borylation reactions of primary and secondary alkyl halides,and the B2pin2 acted as bi-boron source for borylation.The high reaction efficiency and mild conditions make the new catalyst system a useful alternative to the recently developed methods for the preparation of alkylboronic esters.
The relationship between bilayer nanostructure,defect density and dye-sensitized solar cell(DSCC) performances was investigated.By adjusting bilayer nanostructures,defect density of ZnO nanodendrite-nanorods structure was decreased comparing to that of nanoflowernanorods structure.The performances of DSCC based on ZnO nanodendrites-nanorods structure and nanoflowernanorods structure were studied by Raman spectrum,room temperature photoluminescence,dye loading,photocurrent density-voltage characteristic and open-circuit voltage decay(OCVD) technique.The device with nanodendritenanorods structure has lower charge recombination rate and prolonged electron lifetime due to its microstructure feature.
