Copper-based halides containing nitroxide radicals and their use

By preparing copper-based halides [C9H21N2O]CuX4 containing nitroxide radicals, the stability and toxicity problems of molecular-based ferroelectric materials in extreme environments were solved, and high polarization values ​​and wide light absorption were achieved, making them suitable for clean energy conversion and optoelectronic devices.

CN119039325BActive Publication Date: 2025-10-10SHANGHAI DIANJI UNIV
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Patent Information

Application Number
CN202411134644.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-19
Publication Date
2025-10-10
Estimated Expiration
2044-08-19

AI Technical Summary

Technical Problem

Existing molecular-based ferroelectric materials have poor stability under high temperature, high humidity and long-term light exposure, and contain toxic elements, which limits their application in devices that can directly contact the human body and in the optoelectronic field.

Method used

4-Amino-TEMPO was used as an organic raw material and copper halide to prepare copper-based halide [C9H21N2O]CuX4 containing nitroxide radicals. The synthesis was carried out by slow evaporation method at room temperature to form organic-inorganic hybrid metal halide, avoiding the use of toxic elements.

Benefits of technology

It achieves high polarization value and stability, is suitable for use in biocompatible clean energy conversion devices, has a wide range of ultraviolet and visible light absorption, and broadens its application range to devices that directly contact the human body and optoelectronic devices.

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Abstract

The present invention belongs to the technical field of molecular-based organic-inorganic hybrid ferroelectric materials, and specifically discloses a copper-based halide containing nitroxide free radicals and its application. The molecular formula of the copper-based halide containing nitroxide free radicals is [C9H 21 N2O]CuX4, wherein X is Cl or Br, and the copper-based halide is prepared using 4-amino-TEMPO as an organic raw material and copper halide as an inorganic raw material. The invention innovatively uses 4-amino-TEMPO as an organic group of molecular ferroelectricity to improve the stability of the material structure. The product [C9H 21 The [N2O][CuX4] single crystal not only has a very stable structure, but also has excellent ferroelectric properties and a wide absorption band, and can be used in the preparation of ferroelectric and optoelectronic devices. In addition, the single crystal does not contain toxic elements and has good safety, and can be used as a material for devices that directly contact the human body, broadening the application range of the material.
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