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Organic rare earth complex and preparation method and application thereof

A rare earth organic and complex technology is applied in the field of rare earth organic complex NH4[Eu42] and its preparation to achieve the effects of good light absorption properties, good light conversion properties and high fluorescence quantum yield

Inactive Publication Date: 2016-08-10
HANGZHOU NORMAL UNIVERSITY
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Problems solved by technology

The rare earth organic complex is prepared by a heating solution method

Method used

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  • Organic rare earth complex and preparation method and application thereof
  • Organic rare earth complex and preparation method and application thereof
  • Organic rare earth complex and preparation method and application thereof

Examples

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Embodiment 1

[0026] EuCl 3 (0.26g, 1.0mmol) dissolved in 10ml of absolute ethanol, as system A; another weighed 1,10-phenanthroline (0.36g, 2.0mmol), salicylic acid (0.55g, 4.0mmol), dissolved in 20ml of absolute ethanol, and use 2.5mol / L ammonia solution to adjust the pH to about 7, as system B; add system B dropwise to system A, react in a constant temperature water bath at 70°C for 8 hours after dropping, and form a white precipitate; Then stand at room temperature for 24h, filter with suction, wash the filter cake with distilled water (10mL×3), wash with ethanol (10mL×3); finally vacuum dry at room temperature for 24h to obtain the product.

[0027] X-ray diffraction test results show that the complex NH 4 [Eu(C 7 h 6 o 3 ) 4 (phen) 2 ] The composition and structure are clear, and it can absorb ultraviolet light with a wavelength of 200nm to 400nm and convert it into visible light with a wavelength of 618nm.

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Abstract

The invention provides an organic rare earth complex NH4[Eu(C7H6O3)4(phen)2] and a preparation method thereof and application of the organic rare earth complex serving as a photoluminescent material. According to the organic rare earth complex, a europium ion is adopted as a coordination center atom, salicylic acid and 1,10-phenanthroline serve as organic ligands, lowest triplet energy levels of the organic ligands can be well matched with the resonance emission energy level of the europium ion, the organic rare earth complex has a good light absorption property in the ultraviolet region and has a high fluorescence quantum yield under the excitation of ultraviolet light, and therefore the organic rare earth complex has a good light conversion property; it is shown through X-ray diffraction testing results that the component and structure of the organic rare earth complex are definite; the organic rare earth complex NH4[Eu(C7H6O3)4(phen)2] can adsorb the ultraviolet light with the wavelength ranging from 200 nm to 400 nm and converts the ultraviolet light into visible light with the wavelength of 618 nm.

Description

(1) Technical field [0001] The invention relates to a rare earth organic complex and its preparation method and application, in particular to a rare earth organic complex NH with light conversion properties 4 [Eu(C 7 h 6 o 3 ) 4 (phen) 2 ] and its preparation method and application. (2) Background technology [0002] The growth of plants is inseparable from the sun, but different light waves in sunlight have different effects on the growth of plants. For example, blue light is beneficial to the growth of plant leaves, red light can stimulate chlorophyll to promote photosynthesis, and is beneficial to the formation of fruits, while ultraviolet light inhibits plant growth. Therefore, it is necessary to develop high-efficiency photoconversion materials to convert the unfavorable and harmful ultraviolet light into the main spectral components needed for photosynthesis-red light and blue light, so as to improve the light utilization efficiency of plant photosynthesis, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06
CPCC07F5/003C09K11/06C09K2211/1007C09K2211/1029
Inventor 王意婷徐存进
Owner HANGZHOU NORMAL UNIVERSITY
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