Check patentability & draft patents in minutes with Patsnap Eureka AI!

Ratio type green-light-emitting fluorescent material

A fluorescent material and ratiometric technology, which is applied in the application of ratiometric fluorescent pH probes and in the field of ratiometric green light-emitting fluorescent materials, can solve the problems of poor optical stability, high toxicity, and small detection range, and achieve low cost and low cost. Good toxicity and dispersibility

Active Publication Date: 2019-07-26
CHINA JILIANG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current fluorescent pH probe materials mainly include organic fluorescent dyes, quantum dots and metal-organic framework materials, which have the following disadvantages: poor optical stability, small detection range and high toxicity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ratio type green-light-emitting fluorescent material
  • Ratio type green-light-emitting fluorescent material
  • Ratio type green-light-emitting fluorescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 0.54 mmol of gadolinium nitrate, 0.2 mmol of lutetium nitrate, 0.2 mmol of cerium nitrate, 0.06 mmol of terbium nitrate, 1 mmol of sodium chloride and 4 mmol of trisodium citrate into 10 ml of water and stir for 15 minutes Then add 20 milliliters of ethylene glycol in above-mentioned solution, stir 20 minutes; Add 4 millimoles of ammonium fluoride and stir 30 minutes again; o C for 5 hours; after cooling, centrifuge washing with deionized water and absolute ethanol, and dry in a vacuum freeze-drying oven for 1 hour to obtain the final product.

[0024] Powder X-ray diffraction analysis results show that the product is pure hexagonal NaGdF 4 Mutually( figure 1 ). Scanning transmission electron microscope observation showed that its morphology was homogeneous monodisperse cluster-type nanoparticles ( figure 2 ), the particle size of a single cluster is about 90nm. Under the excitation of xenon lamp with a wavelength of 254nm, Ce / Tb: NaLu 0.2 Gd 0.8 f 4 Exhibit...

Embodiment 2

[0026]Add 0.67 mmol of gadolinium nitrate, 0.2 mmol of lutetium nitrate, 0.1 mmol of cerium nitrate, 0.03 mmol of terbium nitrate, 1 mmol of sodium chloride and 4 mmol of trisodium citrate into 10 ml of water and stir for 15 minutes Then add 20 milliliters of ethylene glycol in above-mentioned solution, stir 20 minutes; Add 4 millimoles of ammonium fluoride and stir 30 minutes again; o C for 5 hours; after cooling, centrifuge washing with deionized water and absolute ethanol, and dry in a vacuum freeze-drying oven for 1 hour to obtain the final product. The structure and fluorescence properties of this product are similar to those of Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of inorganic light-emitting materials and particularly relates to a ratio type green-light-emitting fluorescent material and application of the ratio type green-light-emitting fluorescent material serving as a ratio type fluorescent pH probe. The molecular formula of the ratio type green-light-emitting fluorescent material is Ce / Tb:NaLu0.2Gd0.8F4. Under an ultraviolet 254nm excitation wavelength condition, Ce<3+> presents broadband emission, the light-emitting wavelength range of the fluorescent material is 300-480nm, the strongest emission peak center wavelength of Tb<3+> is 550nm, and the whole fluorescent material presents strong green light emission; as the pH increases from 4 to 10, the fluorescence intensity of Tb<3+> ions and the Ce<3+> ions changes evidently. The ratio type green-light-emitting fluorescent material has the advantages that by pH response surface ligand protonation or deprotonation and energy transfer regulation, a ratio type fluorescent pH detection method is achieved, a new thought is provided for the acquiring of high-sensitivity inorganic fluorescent pH probe materials with high photochemical stability, low toxicity andfast response, and the ratio type green-light-emitting fluorescent material is hopefully being widely applied in the field of pH detection.

Description

technical field [0001] The invention belongs to the field of inorganic luminescent materials, in particular to a ratio type green light emitting fluorescent material and its application as a ratio type fluorescent pH probe. Background technique [0002] The common pH detection methods mainly include pH test paper and electrochemical pH meter. The pH test paper is only suitable for rough measurement. The electrochemical pH meter is large in size and complex in design. It can only be used for single-point detection, and cannot be applied to small devices and cell environments. detection. Fluorescence-based pH detection methods have fast response, high spatial resolution, and long-distance measurement. The development of fluorescent pH probe materials has important scientific research value and practical significance. The current fluorescent pH probe materials mainly include organic fluorescent dyes, quantum dots and metal-organic framework materials, which have the following ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09K11/85C09K11/06G01N21/64
CPCC09K11/06C09K11/7773C09K2211/182G01N21/6428G01N2021/6432
Inventor 雷磊徐时清夏涵
Owner CHINA JILIANG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com