Application and method of series of organic dyestuffs in visible-light photocatalyst Ru(bpy)3Cl2 fluorescence quenching

An organic dye and fluorescence quenching technology, applied in the field of fluorescence spectrum analysis, can solve the problems of few researches on fluorescence quenching, achieve good fluorescence quenching effect, simple and controllable operation

Inactive Publication Date: 2014-06-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has been reported in the literature that organic dyes quench the fluorescence of erythrochrome and tetrakis(p-sulfophenyl)porphyrin [5,6] , while the organic dyes on Ru(bpy) 3 Cl 2 There are few studies on fluorescence quenching

Method used

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  • Application and method of series of organic dyestuffs in visible-light photocatalyst Ru(bpy)3Cl2 fluorescence quenching
  • Application and method of series of organic dyestuffs in visible-light photocatalyst Ru(bpy)3Cl2 fluorescence quenching
  • Application and method of series of organic dyestuffs in visible-light photocatalyst Ru(bpy)3Cl2 fluorescence quenching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Dye Brilliant Blue E-FFN ( 1 ) to Ru(bpy) 3 Cl 2 Determination of Fluorescence Quenching in Aqueous Solutions

[0042] Accurately add 1 mL of the prepared Ru(bpy) with a pipette gun 3 Cl 2 Put the aqueous solution in a cuvette, cover the cuvette with a lid, and measure the emission spectrum F of the solution 0 ; Then add 1 μL of 0.001 mol / L dye Brilliant Blue E-FFN aqueous solution prepared in advance to the cuvette, mix well and measure the emission spectrum, observe the quenching situation, measure 1×10 -6 mol / L, 2×10 -6 mol / L, 3×10 -6 mol / L, 4×10 -6 mol / L, 5×10 -6 mol / L Fluorescence intensity F of the mixed solution at 5 different concentrations to obtain a set of quenched Ru(bpy) with corresponding concentrations 3 Cl 2 Solution fluorescence spectrum. Kg=49.3 / 10 10 mol ?1 · dm 3 ·s ?1 .

[0043] .

Embodiment 2

[0045] Cibazon P-6R( 2 ) to Ru(bpy) 3 Cl 2 Determination of Fluorescence Quenching in Aqueous Solutions

[0046] Accurately add 1 mL of the prepared Ru(bpy) with a pipette gun 3 Cl 2 Put the aqueous solution in a cuvette, cover the cuvette with a lid, and measure the emission spectrum F of the solution 0 ; Then add 1 μL of 0.001 mol / L aqueous solution of dye Cibazon P-6R prepared in advance to the cuvette, measure the emission spectrum after mixing evenly, observe the quenching situation, and measure 1×10 -6 mol / L, 2×10 -6 mol / L, 3×10 -6 mol / L, 4×10 -6 mol / L, 5×10 -6 mol / L Fluorescence intensity F of the mixed solution at 5 different concentrations to obtain a set of quenched Ru(bpy) with corresponding concentrations 3 Cl 2 Solution fluorescence spectrum. Kg=25.7 / 10 10 mol ?1 · dm 3 ·s ?1 .

[0047] .

Embodiment 3

[0049]Reactive Brilliant Blue FN-G( 3 ) to Ru(bpy) 3 Cl 2 Determination of Fluorescence Quenching in Aqueous Solutions

[0050] Accurately add 1 mL of the prepared Ru(bpy) with a pipette gun 3 Cl 2 Put the aqueous solution in a cuvette, cover the cuvette with a lid, and measure the emission spectrum F of the solution 0 ; Then add 1 μL of 0.001 mol / L aqueous solution of dye reactive brilliant blue FN-G prepared in advance to the cuvette, measure the emission spectrum after mixing evenly, observe the quenching situation, measure 1×10 -6 mol / L, 2×10 -6 mol / L, 3×10 -6 mol / L, 4×10 -6 mol / L, 5×10 -6 mol / L Fluorescence intensity F of the mixed solution at 5 different concentrations to obtain a set of quenched Ru(bpy) with corresponding concentrations 3 Cl 2 Solution fluorescence spectrum. Kg=17.9 / 10 10 mol ?1 · dm 3 ·s ?1 .

[0051] .

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Abstract

The invention relates to application and method of series of organic dyestuffs in visible-light photocatalyst Ru(bpy)3Cl2 fluorescence quenching. In the Ru(bpy)3Cl2 fluorescence quenching experiment through the organic dyestuffs, the experimental temperature is 25 DEG C, an experimental solvent is deionized water, and an aqueous solution of the organic dyestuffs is added into an aqueous solution of a complex containing a certain concentration of Ru(bpy)3Cl2, so that Ru(bpy)3Cl2 is subjected to fluorescence quenching. The Ru(bpy)3Cl2 fluorescence quenching efficiencies of different organic dyestuffs are different, and the quenching rate constant of brilliant blue E-FFN with the highest quenching efficiency is 49.3/1010mol-1.dm3.s-1. Compared with the prior art, the application method has the advantages that the operation is simple and controllable, and types of compounds capable of performing fluorescence quenching on Ru(bpy)3Cl2 are enriched. The compounds are recommended to serve as additives of visible light catalysis organic reactions.

Description

technical field [0001] The present invention relates to the fluorescence spectroscopic analysis that organic compound participates in, is specifically a series of organic dyes in visible light catalyst Ru(bpy) 3 Cl 2 Applications and methods in fluorescence quenching. Background technique [0002] Ru(bpy) was first reported by Gafney and Adamson in 1971 3 Cl 2 electron transfer fluorescence quenching [1] , 1975 Ru(bpy) 3 Cl 2 As a photosensitizer, the function of photocatalytic water splitting was also recognized by Suitin et al. [2] Since the report, ruthenium(II) polypyridine complexes have become the focus of coordination chemistry, material chemistry and other researches due to their unique chemical stability, rich redox properties and excellent luminescent properties. Researchers have studied Ru(bpy) 3 Cl 2 The research on its derivatives has promoted and developed the application of ruthenium (II) polypyridine complexes in photophysics, photochemistry, electroc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 张荣华马鹏
Owner TONGJI UNIV
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