A kind of polydiacetylene with helical structure and its preparation method and application

A polydiacetylene and helical structure technology, which can be used in instruments, analytical materials, color/spectral property measurement, etc. strong effect

Active Publication Date: 2020-01-03
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current application system of superchiral light is relatively single, and the chirality of the obtained chiral substances is also low; therefore, it is currently necessary to expand the application range of superchiral light and improve the chirality of the obtained chiral substances. Technical issues resolved

Method used

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  • A kind of polydiacetylene with helical structure and its preparation method and application
  • A kind of polydiacetylene with helical structure and its preparation method and application
  • A kind of polydiacetylene with helical structure and its preparation method and application

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preparation example Construction

[0027] The invention provides a method for preparing polydiacetylene with a helical structure, comprising:

[0028] Polydiacetylene with a helical structure is obtained by irradiating the benzaldehyde diacetylene film with superchiral light for 25 to 40 minutes;

[0029] Wherein, the superchiral light is obtained according to the following method:

[0030] A beam of laser light emitted by a 325nm helium-cadmium laser is divided into two beams of laser beams through an ultraviolet beam splitter. A beam of circularly polarized light forms a standing wave in the interference region, that is, superchiral light.

[0031] According to the present invention, the present invention obtains polydiacetylene with a helical structure by irradiating the benzaldehyde diacetylene film with superchiral light for 25 to 40 minutes; wherein, the irradiation time is preferably 30 to 35 minutes; the benzaldehyde diacetylene film The thickness is preferably less than 3mm, more preferably less than...

Embodiment

[0040] 1) Weigh 1mmol of PCDA and dissolve it in 30mL of dichloromethane solvent, ultrasonically dissolve it, remove a small amount of polymerized PDA by filter membrane, and place the filtrate in a 50mL clean anhydrous sample bottle. Sequentially add p-hydroxybenzaldehyde (0.134g, 1.1mmol), DCC (0.388g, 2mmol) and a certain amount of catalyst DMAP (0.0671g, 0.55mmol) in a single-necked flask, magnetically stirred, reacted at room temperature and pressure for 72h, passed TLC plates were used to check the final extent of reaction. The final product was purified and separated through a chromatographic column to obtain a white powder of benzaldehydediyne (BSDA) with a yield of 62%. Protect from light and freeze.

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Abstract

The invention provides polydiacetylene with a spiral structure as well as a preparation method and an application of polydiacetylene. According to the preparation method of polydiacetylene, polydiacetylene with the spiral structure is obtained from a benzaldehyde diacetylene film by irradiating with super-chiral light for 25-40 min, wherein the ultra-chiral light is formed by steps as follows: a laser beam emitted by a 325 nm helium-cadmium laser is split into two opposing laser beams by an ultraviolet beam splitter, the two opposite laser beams pass through a Glan prism and a 1 / 4 polaroid respectively, and two opposite circularly polarized beams are obtained, and standing waves, namely, the super-chiral light, are formed by the two opposite laser beams in the interference region. Resultsshow that polydiacetylene obtained from the benzaldehyde diacetylene film irradiated by the super-chiral light has better spiral structure and stronger chirality, and has stronger interaction and is more sensitive in detection when used for detecting amino acids.

Description

technical field [0001] The invention relates to superchiral optical path technology, in particular to a polydiacetylene with helical structure and its preparation method and application. Background technique [0002] Chirality was proposed by the famous scientist Lord Kelvin in 1893, and it is often used in various interdisciplinary fields to express the property that an object and its mirror image cannot overlap. Compounds with chiral properties generally exist in chemistry, biology, medicine, materials and other disciplines and interdisciplinary subjects, and play a very important role, such as the various units that constitute organic life, such as amino acids are in L-conformation, DNA is Right-handed conformation. Chirality exists widely, and usually exists in nature with a specific chirality, and circularly polarized light originating from the formation of the universe is often used as an external physical method to prepare and regulate helical polymer photonic materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F138/00G01N21/31
CPCC08F138/00G01N21/314G01N2021/3155
Inventor 邹纲何晨露
Owner UNIV OF SCI & TECH OF CHINA
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