A two-dimensional semiconductor conjugated polymer material and its preparation and application in ultrafast laser protection

A conjugated polymer and two-dimensional semiconductor technology, applied in the field of two-dimensional materials, can solve the problems of hindering electron transport, π-π stacking hindering electron transport, poor response, etc., and achieve excellent broadband absorption, good optical properties, and high thermal stability Effects on sexuality and environmental stability
CN113698602BActive Publication Date: 2022-05-17TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2022-05-17

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Abstract

The invention relates to a two-dimensional semiconductor conjugated polymer material and its preparation and application in ultrafast laser protection. The preparation process is specifically: using a solid-phase polymerization reaction assisted by an end-capping agent, using small organic molecules as monomers , under the action of a catalyst, it undergoes high-temperature calcination and polymerization in the air environment, and after the polymerization is completed, a two-dimensional semiconductor conjugated polymer material is obtained by mechanical exfoliation. Compared with the prior art, the material of the present invention has an ultra-thin two-dimensional sheet structure, good crystallinity, a super-large conjugate plane, and can rapidly delocalize electrons. The region exhibits nonlinear absorption characteristics, specifically manifested as anti-saturation absorption behavior; at the same time, it is easy to operate, easy to control the reaction conditions, and easy to produce on a large scale.
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Description

technical field

[0001] The invention belongs to the technical field of two-dimensional materials, and relates to a two-dimensional semiconductor conjugated polymer material and its preparation and application in ultrafast laser protection. Background technique

[0002] Since T.Maiman first discovered the ruby ​​laser in 1960, ultrafast laser, as an important branch of optics, has been widely used in communications, military, medicine, protection and industry. Ultrafast laser sensitive materials, especially ultrafast laser protective materials aroused great concern of scientists. However, traditional optically sensitive materials are difficult to meet the growing application requirements. In order to solve this problem, two-dimensional materials, due to their excellent optical properties such as ultrafast broadband optical response, obvious optical polarization degree, and strong excitonic effect in ultra The field of fast optics has been greatly developed. Due to the insta...

Claims

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