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Preparation method of phospholipid functional photoluminous reinforced type nuclear shell structure quantum point

A core-shell structure, photoluminescence technology, applied in the field of composite materials, can solve the problems of no biological and chemical stability, no stable chemical bond connection, etc., achieve good colloidal stability, enhance photoluminescence performance, and have wide application prospects Effect

Inactive Publication Date: 2009-01-21
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantage is that the core-shell structure quantum dots and phospholipids are only physically adsorbed on the surface, and there is no stable chemical bond connection, making the structure not biologically and chemically stable.

Method used

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  • Preparation method of phospholipid functional photoluminous reinforced type nuclear shell structure quantum point
  • Preparation method of phospholipid functional photoluminous reinforced type nuclear shell structure quantum point
  • Preparation method of phospholipid functional photoluminous reinforced type nuclear shell structure quantum point

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Using cadmium oxide, selenium, dimethyl zinc and bistrimethyl silicon sulfide as the initial raw materials, cadmium selenide / zinc sulfide type core-shell structure quantum dots are formed after solution cooling and crystallization at high temperature, and then react with phospholipids with mercapto groups, through The interaction between zinc and sulfur to prepare phospholipid-functionalized photoluminescence-enhanced core-shell quantum dots.

[0028] Step a: Add 0.0615 grams of cadmium oxide, 0.2211 grams of tetradecyl phosphonic acid and 3.7750 grams of trioctylphosphine oxide in a 25 ml flask, seal and feed into argon for protection, heat to 320 degrees Celsius, let the cadmium oxide Fully melt in the mixed solution of tetraalkylphosphonic acid and trioctylphosphine oxide.

[0029] Step b: reduce the temperature of the reaction system to 270 degrees centigrade, add sulfur, selenium or tellurium stock solution in the flask (this solution is that 0.0609 grams of powder...

Embodiment 2

[0035] Using cadmium oxide, selenium, dimethyl zinc and bistrimethyl silicon sulfide as the initial raw materials, cadmium selenide / zinc sulfide type core-shell structure quantum dots are formed after solution cooling and crystallization at high temperature, and then react with phospholipids with mercapto groups, through The interaction between zinc and sulfur to prepare phospholipid-functionalized photoluminescence-enhanced core-shell quantum dots.

[0036] Step a: Add 0.01 gram of cadmium oxide, 0.01 gram of tetradecyl phosphonic acid and 0.01 gram of trioctylphosphine oxide in a 25 ml flask, seal it, feed it with argon for protection, heat to 320 degrees Celsius, and let the cadmium oxide Fully melt in the mixed solution of tetraalkylphosphonic acid and trioctylphosphine oxide.

[0037] Step b: reduce the temperature of the reaction system to 270 degrees centigrade, add sulfur, selenium or tellurium stock solution in the flask (this solution is to dissolve the powder of one...

Embodiment 3

[0043] Using cadmium oxide, selenium, dimethyl zinc and bistrimethyl silicon sulfide as the initial raw materials, cadmium selenide / zinc sulfide type core-shell structure quantum dots are formed after solution cooling and crystallization at high temperature, and then react with phospholipids with mercapto groups, through The interaction between zinc and sulfur to prepare phospholipid-functionalized photoluminescence-enhanced core-shell quantum dots.

[0044] Step a: add 1 gram of cadmium oxide, 1 gram of tetradecyl phosphonic acid and 10 grams of trioctylphosphine oxide in a 25 ml flask, seal and feed into argon for protection, heat to 320 degrees Celsius, let cadmium oxide Fully melt in the mixed solution of tetraalkylphosphonic acid and trioctylphosphine oxide.

[0045] Step b: reduce the temperature of the reaction system to 270 degrees Celsius, add sulfur, selenium or tellurium stock solution in the flask (this solution is to dissolve 1 gram of powder of one of the three n...

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Abstract

This invention provides a phosphatide functionizing photoluminescence enhancement type nucleocapsid structural quanta point and its preparation, which belongs to composite technique field. Its material includes metal oxide, metal and nonmetal alkyl compound, the fourth nonmetal element. The nucleocapsid structural quanta point is obtained by solution high temperature cooling crystallizing, and then the phosphatide with hydrosulfide is added, and then the bioactive phosphatide functional photoluminescence enhancement type nucleocapsid structural quanta point is produced by the reaction of metal and hydrosulfide. The experimental result shows that the functionizing of phosphatide towards nucleocapsid structural quanta point not only improves colloidal state aqueous phase stability of quanta point, but also enhances its function of photoluminescence of quanta point. The degree of its photoluminescence enhancement will be a function of the concentration of phosphatide functionizing quanta point. This invention provides a biological platform for solar battery and biosensor.

Description

technical field [0001] The invention relates to a method in the technical field of composite materials, in particular to a method for preparing phospholipid-functionalized photoluminescence-enhanced core-shell structure quantum dots. Background technique [0002] Semiconductor quantum dots are small semiconductor structures with multidimensional structures in the nanoscale range. The size and shape of these structures and the number of electrons they hold can be precisely controlled, so quantum dots exhibit many physical behaviors of quantum systems in the microscopic world. It is especially worth mentioning that quantum dots with a core-shell structure, such as cadmium selenide / zinc sulfide, cadmium telluride / zinc sulfide, cadmium sulfide / zinc sulfide, have been proven to have more stable fluorescence effects. Thanks to these special physical properties derived from the nature of quantum confinement, quantum dots have been proposed as a functional platform for novel materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06
Inventor 何鹏朱新远
Owner SHANGHAI JIAOTONG UNIV
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