Organic flourescent material derived from glutamic acid

A technology of fluorescent materials and glutamic acid, applied in the fields of luminescent materials, organic chemistry, zinc organic compounds, etc., can solve the problems of harsh use conditions, difficult to obtain blue light, few types, etc., and achieve good thermal stability, high product purity, Easy to prepare effects

Inactive Publication Date: 2011-05-11
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At first, inorganic fluorescent materials were widely studied, but there are some insurmountable shortcomings in inorganic materials, such as few types, small adjustability, harsh use conditions, low energy efficiency, and difficulty in obtaining blue light, etc.

Method used

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  • Organic flourescent material derived from glutamic acid
  • Organic flourescent material derived from glutamic acid
  • Organic flourescent material derived from glutamic acid

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0017] Synthesis of organic ligands: (S)-glutamic acid (11.7g, 0.08mol) was dissolved in 2M NaOH aqueous solution (0.16mol, 80mL), and 4-cyanobenzaldehyde (10.5g, 0.08mol) was added dropwise Ethanol (40 mL) solution. After dropping, the mixture was cooled to below 5°C with an ice bath, and NaBH was added in batches. 4 (1.0 g, 0.025 mol) to keep the temperature of the reaction solution at 0-5°C. After the addition, the reaction solution was raised to room temperature and stirred for 1.5 h. A solution of 4-cyanobenzaldehyde (2.1 g, 0.016 mol) in ethanol (10 mL) was added dropwise, followed by NaBH 4 (0.2g, 4.8mmol), the reaction solution was stirred for 0.5h, and unreacted 4-cyanobenzaldehyde was extracted with ether. The aqueous layer was separated, and hydrochloric acid was added dropwise at 0-5°C to adjust the pH to 3. At this time, a large amount of white solid precipitated out. Suction filter, wash the solid with ice water, and then dry the solid in a vacuum oven at 50...

Embodiment 2

[0019] Synthesis of zinc complexes: In a small test tube, add zinc acetate aqueous solution (43.1mg, 0.5mmol / 5mL), then cover the NaOH aqueous solution (0.25mmol / 1mL) of ligand NC-Glu (65.6mg, 0.25mmol), place The mixed solution was heated to 60° C., and then slowly cooled to obtain 29.3 mg (32.4%) of colorless transparent needle-like microcrystals. Elemental analysis theoretical value (experimental value) %: C, 45.44 (44.87); H, 4.11 (4.07); N, 8.15 (8.20). Infrared spectrum (KBr, cm -1 ): 3300.09(m), 2225.32(m), 1609.74(s), 1567.53(s), 1391.18(m), 1250.41(w), 899.21(w). The compound emits blue fluorescence under 330nm ultraviolet light.

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Abstract

The invention discloses a novel organic flourescent material derived from glutamic acid, which is (S)-N-(4-cyanobenzyl)-glutamic acid that is the product of the condensation of an aromatic aldehyde and an amino acid, the complexes of the (S)-N-(4-cyanobenzyl)-glutamic acid and metal zinc and cadmium also have a fluorescent property. The synthesis method of the invention is simple. The compound prepared has high purity and stability, and is colorless or almost colorless in sunlight and emits blue fluorescent light in 330-nanometer ultraviolet light. The colorless flourescent material has counterfeiting performance.

Description

【Technical field】 [0001] The invention relates to an organic fluorescent material derived from glutamic acid, which belongs to the field of organic light-emitting materials. 【Background technique】 [0002] Fluorescent materials can not only be used in the fields of textile, coloring and printing pigments, but also widely used in fluorescence analysis, traffic signs, scintillators in nuclear technology, fluorescent collectors in solar energy conversion technology, fluorescent labels in biological analysis and medical diagnosis etc., and have important applications in fields such as industry, agriculture, biology, medicine, and national defense. [0003] Fluorescence is the radiation released by a substance when it is deactivated from an excited state to the lowest energy state of the same multiple state. The most basic condition for a compound to fluoresce is that the energy absorbed by a multiple state-invariant transition is less than the energy required to break the weake...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07C255/58C07C253/30C07F3/06C07F3/08
Inventor 陈建珊吴新涛盛天录傅瑞标胡胜民何益明
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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