Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sulfion sensor based on polyethylene glycol and preparation method and application thereof

A polyethylene glycol and sulfur ion technology, applied in the fields of life science, environmental science, and analytical chemistry, can solve the problems of high cost input and complicated detection process, and achieve the effects of low cost input, simple synthesis route and convenient post-processing.

Active Publication Date: 2015-09-23
HUNAN UNIV OF SCI & TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the detection methods are costly and the detection process is too complicated

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
  • Sulfion sensor based on polyethylene glycol and preparation method and application thereof
  • Sulfion sensor based on polyethylene glycol and preparation method and application thereof
  • Sulfion sensor based on polyethylene glycol and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a fluorescent sensor with a sulfide ion detection function, comprising the following steps:

[0025] (1) Dissolve monoamino polyethylene glycol with a molecular weight of 1000 and 4-bromo-1,8-naphthalene anhydride in a molar ratio of 1:2 in absolute ethanol, and place in N 2 Under the condition of protecting and avoiding light, after 30~45 minutes, continue to heat up to 85°C and stir and reflux for 20 hours. After the reaction is completed, filter, and then remove a small part (10~30%) of absolute ethanol, recrystallize and precipitate the product, and filter with suction The desired product was obtained and dried in vacuum to obtain polyethylene glycol-modified 4-bromo-1,8-naphthalene anhydride;

[0026] (2) Take the polyethylene glycol-modified 4-bromo-1,8-naphthalene anhydride synthesized in step (1) and sodium azide in a molar ratio of 1:5, and dissolve it in N,N-dimethylformamide , put the mixed solution in the dark and N 2 Stir at 85°C...

Embodiment 2

[0028] A method for preparing a fluorescent sensor with a sulfide ion detection function, comprising the following steps:

[0029] (1) Dissolve monoaminopolyethylene glycol with a molecular weight of 2000 and 4-bromo-1,8-naphthalene anhydride in a molar ratio of 1:8 in absolute ethanol, and place in N 2 Under the condition of protecting and avoiding light, after 30~45 minutes, continue to heat up to 85°C and stir and reflux for 20 hours. After the reaction is completed, filter, and then remove a small part (10~30%) of absolute ethanol, recrystallize and precipitate the product, and filter with suction The desired product was obtained and dried in vacuum to obtain polyethylene glycol-modified 4-bromo-1,8-naphthalene anhydride;

[0030] (2) Take the polyethylene glycol-modified 4-bromo-1,8-naphthalene anhydride and sodium azide synthesized in step (1) at a molar ratio of 1:10, and dissolve it in N,N-dimethylformamide , put the mixed solution in the dark and N 2 Stir at 85°C fo...

Embodiment 3

[0032] A method for preparing a fluorescent sensor with a sulfide ion detection function, comprising the following steps:

[0033] (1) Dissolve monoaminopolyethylene glycol with a molecular weight of 2000 and 4-bromo-1,8-naphthalene anhydride at a molar ratio of 1:20 in absolute ethanol, and place in N 2 Under the condition of protecting and avoiding light, after 30~45 minutes, continue to heat up to 85°C and stir and reflux for 20 hours. After the reaction is completed, filter, and then remove a small part (10~30%) of absolute ethanol, recrystallize and precipitate the product, and filter with suction The desired product was obtained and dried in vacuum to obtain polyethylene glycol-modified 4-bromo-1,8-naphthalene anhydride;

[0034] (2) Take the polyethylene glycol-modified 4-bromo-1,8-naphthalene anhydride and sodium azide synthesized in step (1) at a molar ratio of 1:25, and dissolve it in N,N-dimethylformamide , put the mixed solution in the dark and N 2 Stir at 85°C f...

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 discloses a sulfion sensor based on polyethylene glycol and a preparation method and application thereof. A fluorescence sensor is prepared by raw materials such as monoamino group polyethylene glycol, 4-bromine-1, 8-anhydride naphthalene and sodium azide, and the fluorescence sensor can identify a sulfion with high sensitivity and high selectivity in the water. According to the sensor, the sulfion is identified selectively through the theory of intramolecular charge transfer (ICT). Due to the fact that sulfion concentration in a system increases gradually, the reducibility of the sulfion can give rise to the generation of the ICT process in the sensor, the fluorescence of the sensor is enhanced gradually, and the absorption strength changes correspondingly. Compared with an existing fluorescence detection technology, the fluorescence sensor is great in water solubility, the detection to the sulfion is high in sensitivity and good in selectivity, the synthetic route is simple, the detection equipment and method are simple and convenient, the sensor is applicable to magnify synthesis and practical production application, and the sensor has a vast application prospect in technical fields such as analytical chemistry, life sciences and environmental sciences.

Description

technical field [0001] The invention relates to technical fields such as analytical chemistry, life science and environmental science, and specifically relates to a fluorescent sensor with a sulfide ion detection function and a preparation method thereof. Background technique [0002] Sulfide ion (S 2- ) is ubiquitous in many environments and organisms, and it plays an irreplaceable role in the whole life system, however, high concentration of S 2- It is a class of substances that are toxic to living organisms, especially the human body. The study found that high concentrations of S 2- It can cause various discomfort symptoms in the human body, including irritation of mucous membranes, unconsciousness and respiratory arrest and other adverse symptoms. More seriously, under acidic conditions, S 2- Will be further protonated to HS - , thus becoming more toxic and corrosive. For example, when the concentration of sulfide in water exceeds 1 mg / L, many kinds of freshwater f...

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): C08G65/48C09K11/06G01N21/64
Inventor 陈建李亚王宏钟维邦吕锟洪永想易平贵
Owner HUNAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com