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Photochemical separations and compositions

A technology of complexes and separation methods, applied in the directions of ruthenium organic compounds, iron organic compounds, chemical instruments and methods, etc., can solve problems such as unreliability and dependence on high-energy radiation

Inactive Publication Date: 2020-04-10
FLORIDA STATE UNIV RES FOUND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although photochemical separation is available for some rare earth elements and many d-block elements, the technique typically relies on high-energy radiation (e.g., 150nm to 300nm), relatively expensive light sources, harmful acids, or combinations thereof
The technique may also be unreliable for metals with high reduction potentials, or for solutions containing more easily reducible ions / solvents

Method used

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  • Photochemical separations and compositions
  • Photochemical separations and compositions
  • Photochemical separations and compositions

Examples

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example

[0075] The invention is further illustrated by the following examples, which should not be construed in any way as limiting the scope of the invention. On the contrary, it should be clearly understood that various other aspects, embodiments, modified forms and their equivalents can be adopted by those of ordinary skill in the art after reading the description herein without departing from the spirit of the present invention or the appended claims. These other aspects, embodiments, modifications and their equivalents will be apparent given the scope of . Accordingly, other aspects of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein.

example 1

[0076] Example 1 - Excitation and Reaction of Electron Acceptor Groups

[0077] All experiments in this example were carried out at room temperature in dry degassed (N 2 )CH 3 carried out in CN. figure 2 A schematic diagram of the equipment used in this example.

[0078] In this example, the complex shown in the figure below was tested, which included Ru(tpy)(tpy-Ph-N 2 ) 3+ , Os(tpy)(tpy-Ph-N 2 ) 3+ and Fe(tpy)(tpy-Ph-N 2 ) 3+ . The structures of these complexes and the results obtained in this example are as image 3 , Figure 4 , Figure 5 with Image 6 shown.

[0079] Figure 7 Show Ru(tpy)(tpy-Ph-N 2 ) 3+ , Os(tpy)(tpy-Ph-N 2 ) 3+ and a comparison of the spectral changes of their mixtures.

[0080] The synthesis of example 2-Nd and Eu complex

[0081] Nd and Eu complexes were prepared for use in the methods described herein. The methods of this example can be applied to other complexes where appropriate. The Nd and Eu complexes of this example are p...

example 3- 3

[0086] Example 3 - Terpyridine functionalized by diazophenyl groups

[0087] In this example, the diazo-functionalized terpyridine ligand was simultaneously combined with Ru 2+ and Fe 2+ The ions are coordinated. As described below, when excited, the diazo ligand is irreversibly reduced by one electron transfer, resulting in the loss of N 2 , with concomitant generation of aryl radicals, which then extract H from the liquid. For mixtures of metal ions, excitation at 455 nm and 700 nm resulted in wavelength-selective photoreactions of the ruthenium and iron complexes, respectively, while the others remained largely undisturbed. Due to the large charge difference, the product (+2) can be easily separated from the starting material (+4) using thin layer chromatography.

[0088] In this example, the diazophenyl group (tpy-Ph-N 2 + ) functionalized terpyridines as electroactive ligands.

[0089] Ru(tpy-Ph-N 2 + ) 2 (PF 6 ) 4 )(Ru-N 2 + ) structure and photoreaction su...

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Abstract

Provided herein are photochemical separations. The methods herein can include exposing a first metal complex and a second metal complex to light to facilitate an irreversible chemical reaction to forma modified first metal complex. The modified first metal complex then may be separated from the second metal complex. Compositions also are provided.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 535514, filed July 21, 2017, which is incorporated herein by reference. [0003] Statement Regarding Federally Sponsored Research or Development [0004] This invention was made with Government support under Contract No. DE-SC0016568 awarded by the US Department of Energy. The US Government has certain rights in this invention. Background technique [0005] Improved metal ion separation methods are needed in many applications ranging from water purification to nuclear waste management due to cost, public safety concerns, or a combination of the above. A variety of separation strategies have been employed, such as transmutation, ion exchange, and redox chemistry, which may be expensive, have limited selectivity, and / or may invalid. [0006] For example, lanthanide and actinide ions such as Am(III) and Cm(III) can be difficult to separate usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07B63/02C07F15/00C07F15/02C07F5/00
CPCC07B63/02C07F15/0026C07F15/0053C07F15/025C07F5/00C07F5/003
Inventor 肯尼思·汉森托马斯·E·阿尔布雷希特-施密特萨汉·萨尔帕格
Owner FLORIDA STATE UNIV RES FOUND INC
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