New use of cyanoacetic acid

A technology of cyanoacetic acid and application, applied in the field of pure organic non-aromatic small molecule cyanoacetic acid as a room temperature phosphorescent material, and can solve problems such as room temperature phosphorescence that have not been reported

Active Publication Date: 2017-06-20
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
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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.

Method used

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  • New use of cyanoacetic acid
  • New use of cyanoacetic acid
  • New use of cyanoacetic acid

Examples

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Embodiment Construction

[0015] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood by those skilled in the art that the following examples are only for illustration and are not intended to limit the scope of the present invention.

[0016] The crystalline cyanoacetic acid used in the following examples was obtained from commercially available products through column chromatography and recrystallization, and the amorphous cyanoacetic acid was obtained by grinding crystalline cyanoacetic acid.

[0017] The purpose of column chromatography and recrystallization is to eliminate the room temperature phosphorescence characteristic caused by impurities contained in the commercially available cyanoacetic acid itself. Wherein the used eluent of column chromatography is chloroform / methanol (V / V=50 / 1), and the cyanoacetic acid after the purification dissolves with acetone, puts overnight in refrigerator then...

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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...

Claims

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Application Information

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IPC IPC(8): C09K11/06
CPCC09K11/06C09K2211/10
Inventor 李振方曼曼李倩倩
Owner WUHAN UNIV
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