稀土专外-Preparation and Properties of Eu3+ Rare Earth Complex and Fluorescent Fiber.ppt

Preparation and Properties of Eu3+ Rare Earth Complex and Fluorescent Fiber Producer：Sun Qiangqiang A novel Eu3+ rare earth complex，composed of 4-hydroxybenzol ate acid and 1，10-phenanthroline ligands was synthesized．The ap parent morphology，composition，thermal stability and fluorescent property of the rare earth complex were measured by TEM, Element analysis，IR，TG and Fluorescence spectrometer． Based on the composition analysis，the complex structure formu la was：Eu(HOC6H4COO)3(phen)·H2O. Fluorescence spectra show ed that the highest intensity fluorescence peak was at 617 nm．The luminescent fiber was prepared by blending melt-spinning with rare earth complex and polypropylene resin．It also has a good luminesc ent quality, which the strongest emission peak was at 618 nm,It could be considered suitable for industrial application． Keywords: 4-hydroxybenzolate acid, rare earth complex, luminescent fibers. Abstract Introduction Europium, Samarium and Terbium ternary complexes have been well known for their enhanced luminescence characteristics based on 4f electronic transitions of Sm3+, Eu3+and Tb3+ions.Compared to many kinds of ligands for rare earth complexes，the ligands of aromatic acid have stable structure，good thermal stability and high efficient f luorescence．So the aromatic acid ligands had become the other imp ortant ligands followed by β-diketone． The research on this kind of rare earth complexes has attracted many experts attention．If we can introduce the rare earth aromatic complexes into the fibers to get a kind of novel fiber with luminescent characteristic，which can be used in many fields such as falsification-preventing，decorations for textile． In this paper, we synthesized a novel high luminescent rare earth complex with Eu3+,4-hydroxybenzolate acid (DPA)and 1,10-phenanth roline (phen) at the molar ratio 1:4:1． Introduction Then the prepared compl