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Preparation and application of chiral titanium oxygen cluster capable of serving as chiral building unit

A titanium oxide cluster and chirality technology, which is applied in the application field of photocatalysis of thioether into sulfone, can solve the problem of limited examples of chiral titanium oxide clusters, and achieve the effects of low equipment requirements, promotion of separation, and expansion of scope.

Pending Publication Date: 2022-05-24
CENT SOUTH UNIV
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Problems solved by technology

So far, there are very limited examples of chiral titanyl clusters self-assembled by building blocks

Method used

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  • Preparation and application of chiral titanium oxygen cluster capable of serving as chiral building unit
  • Preparation and application of chiral titanium oxygen cluster capable of serving as chiral building unit
  • Preparation and application of chiral titanium oxygen cluster capable of serving as chiral building unit

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Experimental program
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Effect test

Embodiment 1

[0034] The preparation method of the novel planar chiral titanium oxide cluster material specifically includes the following steps:

[0035] (1) 35 mg of butanedione oxime, 55.2 mg of ferrocene dicarboxylic acid, and 6 mL of DMF were mixed in a 10 mL glass bottle, and then 0.5 mL of titanium isopropoxide was added. The resulting mixture was sonicated for 15 min, placed in an oven at 80°C for three days, then cooled to room temperature, placed for two days, washed with DMF, and dried to obtain yellow crystal {Ti 5 Fdc-1}.

[0036](2) 35 mg of butanedione oxime, 46 mg of ferrocene carboxylic acid, and 6 mL of isopropanol were mixed in a 10 mL glass bottle, and then 0.3 mL of titanium isopropoxide was added. The obtained mixture was sonicated for 15 min, heated in an oven at 80°C for two days, then cooled to room temperature, washed with isopropanol, and dried to obtain yellow crystal {Ti 5 FCC-2}.

[0037] The planar chirality {Ti 5 Fc-1} clusters are used as building blocks...

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Abstract

The invention discloses preparation and application of a chiral titanium oxygen cluster, and belongs to the technical field of titanium oxygen cluster synthesis. Two titanium oxygen clusters with planar chirality are synthesized through a solvothermal method, unstable coordination sites are arranged on the lower surfaces of the structures of the titanium oxygen clusters, and chirality can be transferred or disappeared in a high-nuclear titanium oxygen cluster by adding auxiliary ligands and changing reaction conditions. The high-nuclear titanium oxygen cluster prepared by the chiral titanium oxygen cluster construction unit has good selectivity for preparing sulfone by selective photocatalysis of thioether, and the catalytic performance of the high-nuclear titanium oxygen cluster exceeds that of the initial construction unit.

Description

technical field [0001] The invention belongs to the technical field of synthesis of chiral titanium oxide clusters, specifically relates to 5 examples of titanium oxide clusters, and also relates to a synthesis method of chiral titanium oxide clusters and its application in photocatalysis of sulfide into sulfone. Background technique [0002] Chirality is a common feature of nature, and it is widely used in medicine, fine chemicals, enantioselective catalysis and some materials with special optical and electromagnetic properties. Compared with molecular chirality and microscopic helices, nanoscale chirality is relatively less studied. The core of hierarchical self-assembly into chiral nanostructures is the design and performance of building blocks, and the structural properties and performance of building blocks can be further enhanced by modifying their constituent ligand building blocks. Currently, most building units are only identified as embedded subunits of gigantic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C315/02C07C317/14C07C317/04
CPCB01J31/223C07C315/02B01J2531/46B01J2531/842B01J2231/70C07C317/14C07C317/04
Inventor 刘超韩二猛
Owner CENT SOUTH UNIV
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