Rare earth compound two-photon absorption material and preparation method thereof

A technology of two-photon absorption and rare earth compounds, applied in biochemical equipment and methods, luminescent materials, chemical instruments and methods, etc., can solve the problems of low absorption coefficient of lanthanide ions, improve the developing effect, and the synthesis steps are simple and obvious The effect of applying value

Inactive Publication Date: 2012-07-18
ANHUI UNIVERSITY
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the f-f transition prohibition leads to the low absorption coefficient of lanthanide ions. At present, most people use the sensitization of chelated chromophores (antenna ligands) to overcome this shortcoming and screen antennas with matching energy and high transfer efficiency. Ligands, extending the wavelength range of photosensitization, etc. have been challenging work in this research field, because the sensitization is limited by the excited state energy transfer (EET) from the triplet state of the ligand to the metal (F.J.Steemers, W.Verboom, D.N.Reinhoudt, E.B.Vander-Tol, J.W.Verhoeven, J.Am.Chem.Soc., 1995, 117, 9408-9414)

Method used

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  • Rare earth compound two-photon absorption material and preparation method thereof
  • Rare earth compound two-photon absorption material and preparation method thereof
  • Rare earth compound two-photon absorption material and preparation method thereof

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Embodiment Construction

[0031] 1. Preparation of intermediate (I):

[0032] In a 250mL round bottom flask, add 16.7g carbazole (100mmol), 6.0g NaOH (150mmol) and 100mL acetone, and heat up to reflux for 2h. After cooling to room temperature, 14 mL of hexyl bromide (16.5 g, 100 mmol) was added to continue reflux for 24 h. Evaporate the acetone as much as possible, then pour 200mL of water into the round bottom flask, a large amount of white solid appears, filter with suction, wash the solid three times with distilled water, after drying, recrystallize with water and ethanol to obtain white needle-like crystal 9-hexyl Carbazole (I).

[0033] 2. Preparation of intermediate (II):

[0034] Add 5.0 g of (I) (20 mmol) into a 150 mL round bottom flask, dissolve with 80 mL of dichloromethane, stir, and quickly add 5.2 g of anhydrous AlCl 3 (40 mmol), ice bath. Under vigorous stirring, a solution of 2.04 g of acetic anhydride (20 mmol) in 20 mL of dichloromethane was added dropwise. After the dropwise add...

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Abstract

The invention relates to a rare earth compound two-photon absorption material, which uses Eu(III) as a metal center and contains a complex of a structural formula below. The complex has a living cell two-photon absorption fluorographic characteristic and can be used for living cell fluorescence microscopy imaging.

Description

1. Technical field [0001] The invention relates to a two-photon absorption material and a preparation method thereof, in particular to a rare-earth compound two-photon absorption material with low toxicity and a living tissue cell developing function and a synthesis method thereof. 2. Background technology [0002] In recent years, with the discovery of two-photon absorbing materials, two-photon fluorescence technology has made a major breakthrough in its application. Since the two-photon technology uses long-wavelength excitation (near-infrared), it has the characteristics of low excitation energy, long wavelength, strong penetration, and small photodamage. It has attractive application prospects in medical diagnosis and fluorescence microscopy imaging. Rare earth complexes have the characteristics of long luminous lifetime, good monochromaticity, and high luminous efficiency, and have always attracted people's attention. It has potential application prospects in photolumi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F5/00C09K11/06C12Q1/02G01N21/64
Inventor 田玉鹏张琼胡张军杨家祥吴杰颖周虹屏张胜义金葆康李胜利马文
Owner ANHUI UNIVERSITY
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