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Method for preparing porphyrin self-assembled nanostructure via microemulsion process

A nanostructure and microemulsion technology, applied in the fields of nanotechnology, nano-optics, nanotechnology, etc., can solve the problems of easy photocorrosion and narrow absorption range of porphyrin monomers, and achieve strong electrochemiluminescence performance, good crystallinity, etc. Structure, effect of broad visible light absorption spectrum

Active Publication Date: 2021-07-09
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the absorption range of porphyrin monomer in the visible light region is relatively narrow, and it is easily corroded by light.
At present, there is no report on the preparation of porphyrin self-assembled nanostructures by microemulsion method

Method used

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  • Method for preparing porphyrin self-assembled nanostructure via microemulsion process
  • Method for preparing porphyrin self-assembled nanostructure via microemulsion process
  • Method for preparing porphyrin self-assembled nanostructure via microemulsion process

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Embodiment 1

[0035]One, microemulsion method prepares the method for porphyrin self-assembled nanostructure, comprises the steps:

[0036] Step 1. Dissolve 5 mg of zinc tetraphenylporphyrin in 0.5 mL of chloroform, fully dissolve through ultrasonic treatment, and store in the dark. Prepare 10 mL of 30 mM tetraoctylammonium bromide aqueous solution as an emulsifier aqueous solution.

[0037] Step 2. Under continuous stirring, add the fully dissolved porphyrin solution into the emulsifier aqueous solution. After 5 minutes of strong ultrasonic treatment, emulsify to form a uniform microemulsion, and then heat it in a constant temperature water bath at 65°C Stir for one hour to volatilize and remove chloroform, and continue stirring the mixture at this temperature for 24 hours to induce porphyrin molecules to assemble under the action of an emulsifier.

[0038] Step 3. After cooling, the final product was centrifuged at 12000 rpm, the supernatant was almost colorless, and the supernatant was ...

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Abstract

The invention discloses a method for preparing a porphyrin self-assembled nanostructure via a microemulsion process. According to the method, tetraoctyl ammonium bromide is used for forming microemulsion to help nucleation and growth of zinc tetraphenylporphyrin, and porphyrin molecules are induced to be assembled under the action of an emulsifier, so the self-assembled porphyrin nanostructure is prepared. Compared with original porphyrin monomers, the ZnTPP-TOAB nanocrystal prepared by the method disclosed by the invention has the advantages that TOAB with positive charges can excite oxidation-reduction properties in porphyrin, and the synthesized porphyrin nanocrystal has stronger electrochemiluminescence property under the condition that oxygen is used as a co-reaction reagent.

Description

technical field [0001] The invention belongs to the field of electrochemiluminescent materials, and relates to a method for preparing porphyrin self-assembled nanostructures by a microemulsion method. Background technique [0002] Electrochemiluminescence (ECL) is a process in which a substance generated on an electrode undergoes a high-energy electron transfer reaction to form an excited state, and then returns to the ground state and emits light. In other words, ECL is chemiluminescence triggered by electrochemical methods. It has the advantages of space-time controllability of electrochemical reactions, easy operation, etc., and high sensitivity and wide linear range of chemiluminescence analysis. The combination of luminescence is thus widely used in many fields. ECL reactions typically require luminophores, also known as chemiluminescent reagents. Several classical ECL luminophores have been reported and widely studied, such as luminol, tris(2,2-bipyridyl)ruthenium(II...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/22C09K11/06B82Y20/00B82Y40/00
CPCC07D487/22C09K11/06B82Y20/00B82Y40/00C09K2211/188
Inventor 李俊吉王济单丹
Owner NANJING UNIV OF SCI & TECH
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