Preparation and use of polyvinyl pyrrolidon modified superparamagnetism nano bengala
A polyvinylpyrrolidone and superparamagnetic technology, applied in the biological and medical fields, can solve the problem of unsatisfactory transplantation efficiency and curative effect, lack of islet graft monitoring technology, inability to intervene early and prevent primary graft dysfunction and immunity. Repulsion reaction and other problems, to achieve the effect of strong magnetism, high dispersion and uniform particle size
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0044] Embodiment 1, a kind of preparation method of the superparamagnetic iron oxide nanoparticle (PVP-SPIO nanoparticle) of polyvinylpyrrolidone modification, carries out following steps successively:
[0045] 1), under the protection of the inert gas Ar, 0.27g FeCl 3 ·6H 2 O, 0.1gFeCl 2 4H 2 0.2.7gPVP is dissolved in the diethylene glycol (DEG) of 18ml, obtains yellow-brown solution;
[0046] 2), under the protection of the inert gas Ar, under stirring conditions, add a mixed solution composed of 0.16gNaOH and 9ml DEG to the above-mentioned yellow-brown solution, and the reaction solution immediately changes from yellow-brown to black-green; React for 2.5 hours, then slowly raise the temperature to 210°C, and reflux at 210°C for 2 hours; keep stirring during the reaction; finally obtain a black suspension;
[0047] 3) Cool the black suspension to room temperature, add 100ml of ethyl acetate and centrifuge at 5000rpm, remove the supernatant; obtain a black solid;
[004...
Embodiment 2
[0051] Embodiment 2, a kind of preparation method of the superparamagnetic iron oxide nanoparticle (PVP-SPIO nanoparticle) of polyvinylpyrrolidone modification, carries out following steps successively:
[0052] 1), under the protection of inert gas Ar, mix 0.54g FeCl under stirring condition at room temperature (10 ℃) 3 ·6H 2 O, 0.2gFeCl 2 4H 2 O, 8.1gPVP is dissolved in the diethylene glycol (DEG) of 36ml, obtains yellow-brown solution;
[0053] 2), under the protection of the inert gas Ar, under stirring conditions, add a mixed solution composed of 0.32g NaOH and 18ml DEG to the above yellow-brown solution, the reaction solution immediately changes from yellow-brown to black-green; React for 3 hours, then slowly raise the temperature to 220°C, and reflux at 220°C for 2 hours; keep stirring during the reaction; finally obtain a black suspension;
[0054] 3) Cool the black suspension to room temperature, add 200ml of ethyl acetate and centrifuge, remove the supernatant; o...
Embodiment 3
[0058] Embodiment 3, a kind of preparation method of the superparamagnetic iron oxide nanoparticle (PVP-SPIO nanoparticle) of polyvinylpyrrolidone modification, carries out following steps successively:
[0059] 1), under the protection of the inert gas Ar, 0.27g FeCl 3 ·6H 2 O, 0.1gFeCl 2 4H 2 0.3.4gPVP is dissolved in the diethylene glycol (DEG) of 18ml, obtains yellow-brown solution;
[0060]2), under the protection of the inert gas Ar, under stirring conditions, add a mixed solution composed of 0.16gNaOH and 9ml DEG to the above-mentioned yellow-brown solution, and the reaction solution immediately changes from yellow-brown to black-green; React for 2.5 hours, then slowly raise the temperature to 215°C, and reflux at 215°C for 1.5 hours; keep stirring during the reaction; finally obtain a black suspension;
[0061] 3) Cool the black suspension to room temperature, add 100ml of ethyl acetate and centrifuge, remove the supernatant; obtain a black solid;
[0062] 4), dis...
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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