Fluorescent molecular TPCA and preparation method thereof

A technology for fluorescent molecules and drying, which is applied in chemical instruments and methods, luminescent materials, organic chemistry, etc., can solve the problems that the fluorescence efficiency of products cannot be further improved, and achieve simple and fast process methods, cheap and easy-to-obtain raw materials, and mild and environmentally friendly reaction conditions Effect

Active Publication Date: 2015-04-22
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods cannot further improve the fluorescence efficiency of the resulting product, so it is necessary to find new raw materials to synthesize fluorescent substances with higher fluorescence efficiency

Method used

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  • Fluorescent molecular TPCA and preparation method thereof
  • Fluorescent molecular TPCA and preparation method thereof
  • Fluorescent molecular TPCA and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Disperse 4 g of citric acid and 0.32 g of mercaptoethylamine into 20 mL of deionized water, stir evenly, put into a hydrothermal reaction kettle, react at 200°C for 5 h, and cool naturally. After cooling, let stand, wash with deionized water, and dry in vacuum to obtain solid TPCA.

[0025] Take a sample and test the product. figure 1 It is a physical photo of TPCA, which is a dark brown crystal, and the yield is 20%. figure 2 It is the mass spectrum of TPCA, m / z 196 is the molecular ion peak. image 3 for TPCA 1 HNMR spectrum (the solvent is deuterated dimethyl sulfoxide), the chemical shifts of all hydrogens in TPCA are shown in the figure, where the integral ratio of peaks b, c, d, and e is 1:0.97:2.04:2.04, which is consistent with the theory than close; Figure 4 for TPCA 13 The CNMR spectrum (the solvent is deuterated dimethyl sulfoxide), and the chemical shifts of all carbons in TPCA are shown in the figure. Figure 5 It is a photograph of an aqueous solut...

Embodiment 2

[0027] Disperse 1g of citric acid and 0.01g of mercaptoethylamine into 10mL of distilled water, stir evenly, put them into a hydrothermal reaction kettle, react at 100°C for 100h, and cool naturally. After cooling, let it stand, wash with distilled water, and dry at room temperature (0-25°C) to obtain solid TPCA.

Embodiment 3

[0029] Disperse 0.01g of citric acid and 0.001g of mercaptoethylamine into 5mL of deionized water, stir evenly, put into a hydrothermal reaction kettle, react at 300°C for 0.1h, and cool naturally. After cooling, let it stand, wash with distilled water, and dry at medium temperature (30-60°C) to obtain solid TPCA.

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Abstract

The invention discloses fluorescent molecular TPCA and a preparation method thereof. The fluorescent molecular is 5-oxo-3,5-dihydro-2H-thiazole [3,2-a]pyridine-7-carboxylic acid, for short, TPCA. The preparation method comprises the steps that 0.01-10 g of citric acid and 0.001-1 g of mercaptoethylamine are mixed in 5-100 mL of water, evenly stirred and then transferred to a hydrothermal reaction kettle, after a hydrothermal reaction is carried out under 100-300 DEG C for 0.1-100 h, the mixture is cooled to be at the room temperature, and a TPCA solution is obtained; the TPCA solution is subjected to still standing, filtering, washing and drying, and then TPCA solid is obtained. The technological method is simple and rapid, the reaction condition is gentle and friendly to environment, adopted raw materials are cheap and easy to obtain, and catalyst is not needed. The prepared TPCA has solubility in water and organic solvents, the fluorescence efficiency in water can reach 90%, and the fluorescent molecular TPCA can be widely applied to the fields of fluorescent printing, fluorescent composites, fluorescence imaging, fluorescence detection probes, organic light emitting devices and the like.

Description

technical field [0001] The invention belongs to the technical field of fluorescent molecule preparation, in particular to a high fluorescent efficiency molecule 5-oxo-3,5-dihydro-2H-thiazo[3,2-a]pyridine-7-carboxylic acid (TPCA) and its Preparation. Background technique [0002] At present, fluorescent materials (including organic fluorescent dyes, quantum dots, complexes, etc.) are widely used in the fields of composite material preparation, life imaging, and fluorescence detection. Among them, the fluorescence efficiency is an important parameter of the fluorescence performance of the fluorescent material. High fluorescence efficiency makes the fluorescence signal of the material more obvious, which has an important impact on the application of the material. At present, the preparation of fluorescent materials with high fluorescence efficiency by using simple raw materials and economical synthesis methods has attracted much attention. [0003] In recent years, the metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D513/04C09K11/06
CPCC07D513/04C09K11/06C09K2211/1037
Inventor 贾叙东顾江江袭锴胡栋华王晟黄新
Owner NANJING UNIV
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