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Polyhedral oligomeric silasesquioxane (POSS)-based load metal nanoparticle and preparation method thereof

A siloxane-based and nano-microsphere technology is applied in the field of supported metal nano-microspheres, which can solve the problem of not involving the supported metal nano-microspheres and the like, achieve uniform and novel metal loading morphology, simple and easy preparation method, and reaction mild conditions

Inactive Publication Date: 2013-06-12
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, great progress has been made in the research of POSS-based amphiphilic block copolymers, but none of the above-mentioned research reports involve the preparation of a polyhedral oligomeric silsesquioxane (POSS)-based amphiphilic block copolymer in water. loaded metal nanospheres

Method used

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  • Polyhedral oligomeric silasesquioxane (POSS)-based load metal nanoparticle and preparation method thereof
  • Polyhedral oligomeric silasesquioxane (POSS)-based load metal nanoparticle and preparation method thereof
  • Polyhedral oligomeric silasesquioxane (POSS)-based load metal nanoparticle and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Prepare methacryloxypropyl isobutyl POSS monomer (MAiBuPOSS): chain transfer agent (CDB): initiator (AIBN) = 20:1:0.2 toluene solution system, the monomer concentration is 0.7mol / L, the The solution was placed in the reactor and degassed three to five times by freezing and thawing with liquid nitrogen, and then filled with argon to protect the reaction. After the reaction was completed, it was frozen with liquid nitrogen to stop the reaction, diluted with a small amount of toluene, and diluted with methanol and ethyl acetate (8:1 ) The mixed solution is precipitated by the precipitant, and the precipitate is dried and sampled for NMR testing. This step is repeated until no POSS monomer exists, and the pink PMAiBuPOSS is obtained after drying. According to the molar ratio of 4-vinylpyridine (4VP): PMAiBuPOSS: initiator (AIBN) = 4000:8:1 to prepare tetrahydrofuran solution system, the monomer concentration is 4mol / L, put the solution in the reactor and freeze it with liqui...

Embodiment 2

[0039] Similar to Example 1, the difference is to prepare the toluene solution system of methacryloxypropyl isobutyl POSS monomer (MAiBuPOSS): chain transfer agent (CDB): initiator (AIBN)=30:1:0.2, The monomer concentration is 0.7mol / L, and all the other are the same as in Example 1.

Embodiment 3

[0041] Similar to Example 1, the difference is that after the pink PMAiBuPOSS is obtained, the molar ratio of 4-vinylpyridine (4VP):PMAiBuPOSS:initiator (AIBN)=10000:8:1 configures the tetrahydrofuran solution system, and the monomer concentration is 4mol / L, all the other are with embodiment 1.

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Abstract

Provided is a polyhedral oligomeric silasesquioxane (POSS)-based load metal nanoparticle and a preparation method thereof. A reversible addition fragmentation free radical polymerization (RAFT) method is utilized to compound propyl methyl acryloyl oxygen isobutyl POSS monomers, chain transfer agent and initiator into solution according to dosages. Liquid nitrogen is utilized to achieve freeze thawing and degassing, and then argon is filled to protect reaction. PMAiBuPOSS is obtained. The PMAiBuPOSS, 4-vinyl pyridine (4VP) monomers and the initiator are compounded into the solution. Through the RAFT method, POSS-based amphiphilic block copolymers, namely, PMAiBuPOSS-b-P4VP, are polymerized. The POSS-based amphiphilic block copolymers are dissolved in volatility co-solvent, and then selective solvent is added to enable the POSS-based amphiphilic block copolymers to form the nanoparticle dissolved in the solution in a self-assembly mode. A certain dosage of chloroauric acid (HAuCl4) is further added dropwise. Finally, the POSS-based load metal nanoparticle is obtained after in-situ reduction.

Description

technical field [0001] The invention relates to a loaded metal nano-microsphere, in particular to a polyhedral oligomerized silsesquioxane-based amphiphilic block copolymer self-assembled in water, and a metal-loaded nano-microsphere prepared by in-situ reduction of metal ions , belonging to the field of organic polymer materials. Background technique [0002] Amphiphilic block copolymer refers to a copolymer composed of hydrophilic and hydrophobic blocks. The hydrophilic block is usually an ionic polymer, while the hydrophobic block is usually a water-insoluble polymer such as a long carbon chain skeleton or polyester. thing. These amphiphilic block copolymers, through molecular structure design, can realize abundant self-assembled forms in selective solvents, such as spherical, columnar, lamellar, vesicular and other forms, and have controllability Huge advantage. These ordered aggregates with special morphology can be used as precursors in important fields such as elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08K3/08C08F293/00C08J3/12B22F9/04
Inventor 戴李宗陈珉钟丽娜康启龙高辉余世荣许一婷曾碧榕罗伟昂何凯斌刘新瑜
Owner XIAMEN UNIV
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