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Janus type star-shaped polymer with circular polarization fluorescence

A star-shaped polymer and circular polarization technology, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of poor fluorescence effects, and achieve the effects of high synthesis efficiency, simple operation, and wide variety

Active Publication Date: 2021-07-02
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that although fluorescent molecules are used to form star-shaped polymers in the prior art, the fluorescent effect is not good

Method used

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  • Janus type star-shaped polymer with circular polarization fluorescence
  • Janus type star-shaped polymer with circular polarization fluorescence
  • Janus type star-shaped polymer with circular polarization fluorescence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of synthetic method of Janus type star polymer with circularly polarized fluorescence is as follows:

[0043] First carry out the preparation of the Janus type star polymer initiator

[0044]Weigh 2.27g of dried β-cyclodextrin and place it in a 250mL two-neck bottle. Under the condition of stirring at 800r / min, add 50mL of anhydrous pyridine to dissolve; dissolve 2.40g of tert-butyldimethylsilyl chloride in 30mL In anhydrous pyridine, place in a constant pressure dropping funnel and slowly flow into a two-necked bottle at a flow rate of 0.20mL / min, react at 0°C for 0.5h, then react at 25°C for 18h, organically extract, and dry Obtain 3.10g product b, wherein the structural general formula of b is as follows:

[0045]

[0046] The route of synthetic b of this example is as follows:

[0047]

[0048] Weigh 2.00g of product b and 5mL of triethylamine into a 250mL two-necked bottle, place it in a low temperature tank at 0°C, add 20mL of anhydrous dichlorometh...

Embodiment 2

[0078] Firstly prepare the Janus type star polymer initiator according to embodiment 1, and then carry out the preparation of the Janus type star polymer with circularly polarized fluorescence, wherein the preparation of the Janus type star polymer with circularly polarized fluorescence includes the following step:

[0079] Weigh 22.00 mg of Janus-type star polymer initiator, 281.00 mg of tetraphenylethylene fluorescent monomer, 6.24 mg of reagent CuBr and 20.00 μL of reagent N,N,N',N,'N"-pentamethyldiethylene In a polymerization bottle, under anhydrous and anaerobic conditions, vacuumize and fill with nitrogen, add 2mL of anhydrous N,N-dimethylformamide, react at 90°C for 15h, and precipitate with the solvent n-hexane, Filter and dry in vacuo until the mass remains constant to obtain 210.00 mg of product a.

[0080] The route of synthetic a of this example is as follows:

[0081]

[0082] In the formula

[0083]

[0084] Weigh 4.00mg of product a and 147.00mg of L-ty...

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Abstract

The invention discloses a Janus type star-shaped polymer with circular polarization fluorescence, and the Janus type star-shaped polymer with circular polarization fluorescence is formed by preparing a Janus type star-shaped polymer initiator and polymerizing the Janus type star-shaped polymer initiator, an isonitrile monomer and other raw materials. Compared with the prior art, the Janus type star-shaped polymer with circular polarization fluorescence has the advantages that the Janus type star-shaped polymer with circular polarization fluorescence has the strongest fluorescence intensity at the maximum emission wavelength of 470 nm and has the strong circularly polarized fluorescence phenomenon at the wavelength of 400 nm, and the prepared polymer hasgreat potential application value in the fields of chiral separation, biological medicine, biological imaging, intelligent materials, nanotechnology, photoelectric materials, encryption and counterfeiting prevention, and the preparation method is simple, environment-friendly and high in flexibility.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a Janus star polymer with circularly polarized fluorescence. Background technique [0002] Among the artificially synthesized helical polymers, the main chain of helical polyisocyanate has a rigid and stable helical structure, which can provide a stable chiral environment, and can be used in chiral adsorption, chiral separation, enantioselective crystallization, photoelectric sensing, etc. And biomedicine and other fields have broad application prospects. [0003] Cyclodextrin is a low-cost glucose macrocyclic compound, which is mainly composed of glucofuranose. Cyclodextrin can form stable bonds with many organic or inorganic molecules by utilizing van der Waals forces, hydrophobic interactions, and intermolecular complexation between host and guest. molecular assembly system. At the same time, cyclodextrin has good biocompatibility, is an environmentally friendly and water-so...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/18C08B37/16C08G61/02C09K11/06
CPCC08F251/00C08G61/02C08B37/0012C09K11/06C08F2438/01C09K2211/185C08F220/1818
Inventor 邹辉吴启亮梁文权李前炜陈永源
Owner HEFEI UNIV OF TECH
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