New use of cyanoacetic acid

Abstract

The invention discloses a new use of pure organic non-aromatic micro-molecular cyanoacetic acid as a room temperature phosphorescence material. The structural formula of the cyanoacetic acid is CNCH2COOH, crystalline cyanoacetic acid or amorphous cyanoacetic acid has room temperature phosphorescence phenomenon under room temperature conditions; the phosphorescence life of the crystalline cyanoacetic acid can reach 862 ms, the quantum yield reaches up to 7.5%, the phosphorescence life of the amorphous cyanoacetic acid at a low temperature (77 K) is prolonged to 1340 ms, and the phosphorescence life of the crystalline cyanoacetic acid at the low temperature (77 K) is prolonged to 1385 ms. The room temperature phosphorescence material cyanoacetic acid is used as a false-proof material after being mixed with 4,4'-dibromobenzophenone without room temperature phosphorescence characteristic, so a new field is developed for the application of the cyanoacetic acid.

Description

technical field [0001] The invention belongs to the field of organic luminescent materials, and in particular relates to a new application of pure organic non-aromatic small molecule cyanoacetic acid as a room temperature phosphorescent material. Background technique [0002] Phosphorescent materials have broad application prospects in many high-tech fields such as biological imaging, molecular sensing, photocatalytic reactions, and photovoltaic devices. Traditional room-temperature phosphorescent materials are mostly inorganic compounds and organic metals, but inorganic compounds and organic metals have many disadvantages, such as limited varieties, high material costs, easy damage, unsuitable for large-scale preparation, and poor stability. Pure organic molecular phosphorescent materials are relatively cheap, easy to adjust the structure, relatively safe to the environment and have good processability, which makes them more suitable for the preparation of bioengineering, m...

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Problems solved by technology

However, room temperature phosphorescence has not been reported for pure organic non-aromatic small molecules due to their special molecular structure.

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