Preparation method for novel rare-earth fluorescent gel adopting PVA as main body and application thereof

Abstract

The invention relates to preparation methods for a rare-earth terbium complex and rare-earth terbium complex fluorescent gel. The method comprises the steps: firstly synthesizing the rare-earth terbium complex, i.e., Tb(ACAC)3.2H2O which serves as luminescent molecules; and then, introducing the rare-earth terbium complex into a PVA matrix, and forming the fluorescent gel in the presence of a cross-linking agent. According to the preparation method for the fluorescent gel, high rare-earth doping concentration can be obtained, and the fluorescence intensity is improved. The preparation method is simple, is high in operability and short in reaction time, is environment-friendly and is applicable to industrial production. Compared with the traditional products, the product prepared by the preparation method has the advantages of good biocompatibility, degradability, low toxicity, good chemical stability and the like and has a broad application prospect in the fields of biomaterials, medical treatment, agriculture, food and the like.

Description

[0001] The invention relates to the technical field of rare earth polymer composite luminescent materials, in particular to a preparation method of a rare earth terbium complex and fluorescent gel with PVA as the main body. Background technique [0002] Rare earth is a new type of functional material with optical, magnetic, electrical and biological properties. Rare earth ions have unique luminescent properties due to the unique structure of their 4f electron shells. These unique luminescent properties make rare earth compounds widely used in medical treatment, biological imaging, optical fibers, lighting devices, etc. Rare earth complexes are obtained by coordination and bonding of ligands and rare earth ions. The principle of luminescence is that the ligand absorbs energy in the ultraviolet region, and then the ligand transfers the energy of its excited state to the rare earth ion in the form of intramolecular energy transfer. The emission levels cause the rare earth ions to...

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Problems solved by technology

[0004] At present, rare earth fluorescent gels based on PVA as the main body have hardly been reported. The rare earth fluorescent gel based on PVA as the main body we reported fully combines the superior fluorescence properties of rare earth complexes with the good biocompatibility and low toxicity of the PVA host. and other advantages, it has broad application prospects in biomaterials, medical treatment, agriculture, food and other fields

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