A thin film electroluminescence cell with the structure of ITO /PPV /PVK∶Eu（TTA）4C5H5NC16H33∶PBD /Alq 3 /Al has been fabricated.Red emissio n with a very sharp spectral band at 614nm was observed and a maximum luminance of 20cd·m -2 at 36V was obtained from the spin-coated device.The full width at half maximum of lu-minescent spectrum is less than 10nm.
Two guanidino acid oxovanadium(IV) complexes have been synthesized. Preliminary tests in vivo have shown that the two title complexes all display lowering glucose activity in vivo to STZ-rats. The effect of glucose-lowering of guanidino acetic acid oxovanadium(IV) complex in vivo is higher than that of guanidino propanoic acid oxovanadium(IV) complex.
