Structurla and Optical Properties of Er(III)Complex with ODA and Phen(ODA=Oxydiacetate,Phen=1,0-Phenanthroline)

摘要

A novel Er(III)complex iwth oxydiacetate and 1,10-phenanthroline was synthesized and its structure and luminescence properties were characterized.The complex of[Er(ODA)(phen)4H_2O]~+ crystallizes in the monoclinic space group P2_1 with a=12.216(4)A,b=16.680(2)A,c=12.627(3)A,beta=108.30(2)deg,V=2442.7(11)A~3,Z=4 and pho=1.841 g/cm~3.When the complex is excited at the He-Cd 325-nm line,it produces two braod bands spaning the regiions 350-650 nm and 1200-1650nm.The emission band of the compelx is characterized by a series of spectral dips in the visible emisison of profile.The compelx exhibits sensitized near-characterized by a series of spectrla dips in the visible emission profile.The complex exhibits sensitized near-IR emission via two kinds of energy transfers from phen to Er(III):nonradiative and radiative energy transfer.