Method for preparing luminescent rear earth-polyethylene glycol polymer composites

Abstract

The invention belongs to luminescent polymers technical field, especially a preparation method of luminescent rare earth-polyethylene glycol polymers. The preparation method comprises: grafting the aromatic organic micromolecule in an inorganic silicon framework to obtain organic bridge molecule by organic synthesis; decorating functional group in polyethylene glycol (PEG400) to obtain polymer bridge molecule by the same decorating method; assembling the organic bridge molecule, polymer bridge molecule and rare earth ion together by coordinate link to obtain rare earth complexes; the rare earth complexes being subjected to hydrolytic polycondensation reaction between the two bridge molecules by collosol-gel method to finally produce xerogel, so that the organic polymers with long carbon chain are set in silica network matrix by coordination bond and covalent bond, and finally the finished product can be obtained after drying and ageing process. The experiment condition is mild and canbe realized at room temperature, the operability and the reproductivity is good. The products have stable quality and good appearance and the grain size is controlled at range of micron and nanometre.

Description

A preparation method of luminescent rare earth-polyethylene glycol polymer composite material technical field The invention belongs to the technical field of polymer composite materials, and in particular relates to a preparation method of a luminescent rare earth-polyethylene glycol polymer composite material. Background technique The rapid development of today's society has already made it extremely urgent to discover the functional compounding, performance complementation and optimization of various materials, and to prepare hybrid materials with excellent performance. Therefore, as soon as the organic-inorganic system appeared, it immediately attracted great attention of scientists. All countries in the world have invested a lot of manpower, material resources and financial resources to conduct in-depth and meticulous research on this material. Generally speaking, polymer composite materials have the following characteristics: inorganic substances and polymers can ach...

AI Technical Summary

Problems solved by technology

However, the hybrid material prepared by the above method is connected by weak interaction force between the rare earth complex and the inorganic matrix, so there are problems such as uneven distribution of the rare earth complex and easy agglomeration, limited doping concentration, and phase separation between the two phases.

Images