Four 'picket fence' porphyrin atropisomers were respectively synthesized from the four corresponding atropisomers of meso-tetra(o-aminophenyl)porphyrin
<正>The regioselective syntheses of novel p-tert-butylcalix[4]arenes with functional aldehyde and dithiocar-bazate Schiff base groups were carried out.p-tert-Bu
Sulfonated poly(ether ether ketone ketone)(SPEEKK) membranes with different degrees of sulfonation(DS) were successfully prepared via electrospinning method. Th
Li0.33MnO2 cathode material was synthesized by solid state reaction. The material showed a small coherent domain size about 10 nm determined by X-ray diffractio
Essential oil was extracted from Artemisia lavandulaefolia DC.by steam distillation(SD) and supercritical-CO2 fluid extraction(SFE),respectively.The constituent