Photochromic polymers containing spiro group and its synthetic method

A photochromic and polymer technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, etc., can solve the problems of low fatigue resistance and low application range, and achieve good photochromic performance, high yield, and simple synthesis process. Effect
CN103265706AInactive Publication Date: 2013-08-28XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2013-08-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

Photochromic polymers containing spiro-class radical group and synthetic method thereof are provided. The polymers consist of eight photochromic polymers formed by four spiro photochromic units polymerize with trans-dichloro bis (triphenylphosphine) platinum / palladium respectively. The synthetic method is as follows: (1) benzophenone carbonyl addition reaction; (2) photochromic units gained by cyclization reaction; (3) a Carbon-carbon triple bond that is gained by sonogashira coupling reaction; (4) terminal alkyne hydrogen that is gained by hydrolysis reaction; and (5) carrying out carbonyl addition reaction of benzophenone, carrying out to obtain photochromic units, carrying out a sonogashira coupling reaction to obtain a carbon-carbon triple bond, carrying out hydrolysis reaction to obtain terminal alkyne hydrogen and carrying out polymerization reaction. The preparation method of the photochromic polymer is simple with low preparation cost and high productivity, and has a wider range of application than the prior polymers.
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Description

technical field

[0001] The invention relates to the field of organic photochromic materials, in particular to photochromic polymers containing spirocyclic groups and a synthesis method thereof. Background technique

[0002] Photochromism is the reversible change of a substance between two physical or chemical states, at least one of which is caused by light radiation, which can be expressed by the following equation:

[0003]

[0004] where A and B respectively represent two different color states of the same substance: λ 1 and lambda 2 represent two different wavelengths respectively.

[0005] The basic characteristics of photochromism are: A and B can exist stably under certain conditions; A and B have obvious color parallax. However, to realize the real application, the following conditions must be met: the two have high stability; the two have high cycle life; the absorption band is in the visible light range; the response speed is fast and the sensitivity is high....

Claims

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