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Visible photosensitized periodic mesoporous organosilica (PMO) near-infrared luminescence material grated with rare earth complex

A technology of rare earth complexes and luminescent materials, applied in the direction of luminescent materials, chemical instruments and methods, etc.

Inactive Publication Date: 2012-09-19
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, PMOs materials have been synthesized with organic groups such as methyl, vinyl, ethynyl, phenylene, 4-phenylethyl ether, ferrocene, etc., and contain organic ligands that can coordinate with rare earth ions. materials have rarely been reported

Method used

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  • Visible photosensitized periodic mesoporous organosilica (PMO) near-infrared luminescence material grated with rare earth complex
  • Visible photosensitized periodic mesoporous organosilica (PMO) near-infrared luminescence material grated with rare earth complex
  • Visible photosensitized periodic mesoporous organosilica (PMO) near-infrared luminescence material grated with rare earth complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Prepare 1.5 g 4,4'-dimethyl-2,2'-bipyridine; prepare 40 mL tetrahydrofuran, dissolve 4,4'-dimethyl-2,2'-bipyridine, and Cool the solution to -20°C; prepare 8.2 mL lithium diisopropylamide, add it dropwise to the above solution, and stir the mixture at -20°C for 2 hours; prepare 4 mL Cl(CH 2 )Si(OEt) 3 , which is added, and the N 2 Stir under protection for 24 hours; distill under reduced pressure to obtain a light rose crude product; vacuum-dry the crude product obtained by distillation under reduced pressure at room temperature to obtain a solid product one.

[0028] (2) Prepare 32 mL of deionized water, 1.04 g of cetyltrimethylammonium bromide and 0.5 g of sodium hydroxide; add the cetyltrimethylammonium bromide and sodium hydroxide to the deionized water , magnetic stirring to accelerate its dissolution, to prepare the first mixture; prepare 1.8 mL of 1,2-bis(triethoxysilyl)ethane and 0.15 g of silanized 2,2'-bipyridyl, to prepare the second mixture solution; ...

Embodiment 2

[0033] (1) Prepare 1.5 g 4,4'-dimethyl-2,2'-bipyridine; prepare 40 mL tetrahydrofuran, dissolve 4,4'-dimethyl-2,2'-bipyridine, and Cool the solution to -20°C; prepare 8.2 mL lithium diisopropylamide, add it dropwise to the above solution, and stir the mixture at -20°C for 2 hours; prepare 4 mL Cl(CH 2 )Si(OEt) 3 , which is added, and the N 2 Stir under protection for 24 hours; distill under reduced pressure to obtain a light rose crude product; vacuum-dry the crude product obtained by distillation under reduced pressure at room temperature to obtain a solid product one.

[0034] (2) Prepare 32 mL of deionized water, 1.04 g of cetyltrimethylammonium bromide and 0.5 g of sodium hydroxide; add the cetyltrimethylammonium bromide and sodium hydroxide to the deionized water , magnetic stirring to accelerate its dissolution, to prepare the first mixture; prepare 1.8 mL of 1,2-bis(triethoxysilyl)ethane and 0.15 g of silanized 2,2'-bipyridyl, to prepare the second mixture solution; ...

Embodiment 3

[0039] (1) Prepare 1.5 g 4,4'-dimethyl-2,2'-bipyridine; prepare 40 mL tetrahydrofuran, dissolve 4,4'-dimethyl-2,2'-bipyridine, and Cool the solution to -20°C; prepare 8.2 mL lithium diisopropylamide, add it dropwise to the above solution, and stir the mixture at -20°C for 2 hours; prepare 4 mL Cl(CH 2 )Si(OEt) 3 , which is added, and the N 2 Stir under protection for 24 hours; distill under reduced pressure to obtain a light rose crude product; vacuum-dry the crude product obtained by distillation under reduced pressure at room temperature to obtain a solid product one.

[0040] (2) Prepare 32 mL of deionized water, 1.04 g of cetyltrimethylammonium bromide and 0.5 g of sodium hydroxide; add the cetyltrimethylammonium bromide and sodium hydroxide to the deionized water , magnetic stirring to accelerate its dissolution, to prepare the first mixture; prepare 1.8 mL of 1,2-bis(triethoxysilyl)ethane and 0.15 g of silanized 2,2'-bipyridyl, to prepare the second mixture solution; ...

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PUM

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Abstract

The invention discloses a preparation method for visible photosensitized periodic mesoporous organosilica (PMO) near-infrared luminescence material grated with a rare earth complex, which comprises the following steps of: modifying 2,2'-bipyridine to prepare a bifunctional ligand bpd-Si; on the basis, synthesizing 2,2'-bipyridine functionalized PMO material (bpd-PMO) by the copolycondensation; meanwhile, preparing a binary rare earth complex Ln(dbm)3(H2O)2(Ln=Er, Yb and Nd); then, mixing products obtained in the previous two steps; taking ethanol as solvent; flowing back under stirring; and washing and drying the obtained solid product to obtain mesoporous hybrid material Ln(dbm)3bpd-PMO(Ln=Er, Yb and Nd) of which the rare earth complex is covalently grafted to a PMO material skeleton. According to the visible PMO near-infrared luminescence material grated with the rare earth complex, the 2,2'-bipyridine functionalized PMO is used as a matrix, and the near-infrared luminescence rare earth complex Ln(dbm)3(H2O)2(Ln=Er, Yb and Nd) is covalently grafted to the hole wall of the PMO material by the ligand exchange reaction to obtain one type of luminescence material which has the mesoporous characteristics and can emit the near-infrared light under the stimulation of visible light.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanocomposite materials, and in particular relates to a preparation method of a PMO (periodic mesoporous organic silicon) near-infrared luminescent material grafted with a rare earth complex sensitized by visible light. Background technique [0002] Due to their unique properties, rare earth elements play an increasingly important role in the development of advanced optical materials. With the development of science and technology, the application of near-infrared luminescence in laser, communication, flat panel display and other fields has attracted the attention of many experts and scholars at home and abroad, which makes the rare earth ion Yb with near-infrared luminescence properties 3+ , Er 3+ and Nd 3+ Emerge in optics and medicine. Due to the parity prohibition of the f-f transition, the fluorescence generated by direct excitation of rare earth ions is very weak. If rare earth io...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06
Inventor 孙丽宁施利毅仇衍楠刘涛王志娟
Owner SHANGHAI UNIV
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