The anisotropically phase-segregated CoPd sulfide nanoparticles, named "CoPd nanoacorns", were spontaneously generated by reducing the corresponding metal precursors with 1,2-hexadecanediol in the presence of various alkanethiols. The CoPd nanoacorn consisting of crystalline Co9S8 and amorphous PdSx phases with the Co9S8 (001) plane at their interface was found to spontaneously form through the anisotropic growth of the Co9S8 phase after the generation of PdSx nanoparticles.

No abstract

No abstract

Stability of anisotropically phase-segregated Co9S8/PdSx nanoacorns, which we recently prepared, was improved by the addition of oleic acid or oleylamine as a stabilizer. Further investigations on the experimental conditions implied the formation of more complex PdSx/Co9S8/PdSx and Co9S8/PdSx/Co9S8 heterostructured nanoparticles.

We report that the extracts of Compositae plants inhibit 12‐O‐tetradecanoylphorbol‐13‐acetate (TPA)‐induced ear oedema in mice. Seventy five methanol extracts obtained from 53 species in 11 tribes of Compositae plants were assayed and their inhibitory ratios calculated. In general, medicinal and edible plant extracts were more effective inhibitors than those from other materials, and the flower extracts were more effective inhibitors than those from other parts. The methanol extracts of the flowers of Cirsium arvense, Taraxacum officinale and T. platycarpum (dandelion), Chrysanthemum morifolium var. sinensis forma esculentum (edible chrysanthemum), C. nipponicum, Matricaria matricarioides and Helianthus annuus (sunflower) markedly inhibited the inflammation induced by TPA in mice. Copyright © 1998 John Wiley & Sons, Ltd.