Perovskite-type lead-halide-based organic-inorganic hybridized molecular machines and production method and application thereof

A perovskite-type, molecular machine technology, used in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc.

Active Publication Date: 2018-08-17
NANJING XIAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, a large number of reported molecular machines belong to organic com

Method used

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  • Perovskite-type lead-halide-based organic-inorganic hybridized molecular machines and production method and application thereof
  • Perovskite-type lead-halide-based organic-inorganic hybridized molecular machines and production method and application thereof
  • Perovskite-type lead-halide-based organic-inorganic hybridized molecular machines and production method and application thereof

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Experimental program
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Embodiment 1

[0038] This embodiment provides a method for preparing a perovskite-type lead halide-based organic-inorganic hybrid molecular machine, including the following steps:

[0039] (1) Accurately weigh 0.1660g of KI with an electronic balance, ultrasonically dissolve it in 10mL N,N-dimethylformamide solvent, and filter to obtain a clear and transparent solution a;

[0040] Accurately weigh 0.2641g of 18-Crown-6 with a ten-thousandth electronic balance, ultrasonically dissolve it in 10mL N,N-dimethylformamide solvent, and filter to obtain a clear and transparent solution b;

[0041] Accurately weigh 0.4610g of PbI with one ten-thousandth electronic balance 2 , ultrasonically dissolved in 20mL N, N-dimethylformamide solvent, filtered to obtain a clear and transparent solution c;

[0042] (2) filtrate a and filtrate b obtained in step (1) are transferred to the beaker of filtrate c without loss, and the mouth of the beaker containing filtrate a, filtrate b and filtrate c is wrapped wi...

experiment example 1

[0049] Get {[K(18-crown-6)]PbI that embodiment 1 makes 3} n Crystal, using Shelxle software for crystal structure analysis, get {[K(18-crown-6)]PbI 3} n For the crystal structure, see Figure 1-Figure 4 .

experiment example 2

[0051] Get {[K(18-crown-6)]PbI prepared in 8mg embodiment 1 3} n The crystal was placed in a crucible, and the differential thermal analysis test was carried out on the NETZSCHDSC 204F1 Phoenix instrument. The results are shown in Figure 5 .

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Abstract

The invention provides perovskite-type lead-halide-based organic-inorganic hybridized molecular machines containing crown ether and a production method and application thereof. The molecular machineshave a chemical general formula of (ABPbX2Y)n, wherein A is monovalent cation, B is crown ether, X and Y refer to halogen anions, n represents the number of repeat units and is equal to mNA, with m>0,and NA is Avogadro's constant. The crown ether is introduced to complex with the monovalent cation, the halogen anions for balancing the monovalent cation may coordinate with lead halide, such that inorganic component [Pb(X2Y)-]n and organic component [(AB)+]n are connected and assembled via Y-A bond; as atomic positions of C and O in the crown ether change constantly, the disordered structure enables [(AB)+]n to constantly rotate around [Pb(X2Y)-]n, and a series of perovskite-type lead-halide-based organic-inorganic hybridized molecular machines are obtained. The molecular machines may alsoact as dielectric materials, light-emitting materials, ferroelectric materials and/or photocatalytic materials.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional nanometer materials, and in particular relates to a perovskite-type lead halide-based organic-inorganic hybrid molecular machine containing a crown ether, a preparation method and an application thereof. Background technique [0002] Perovskite originally refers to CaTiO discovered by German geologist Gustav Rose in 1839 3 , he named it after the Russian geologist Perovski, and it was gradually used to refer to compounds with perovskite structure types. The most basic structure of organic-inorganic hybrid perovskite is ABX 3 , B ions and X ions can form a more perfect regular octahedron [BX 6 ] 4- , the octahedron and the octahedron are directly connected to the top and extend infinitely to form a three-dimensional framework, and the A ions are filled in the gaps formed by the regular octahedron. In the hybrid perovskite structure, B ions generally refer to metal cations, and the com...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J31/06C09K11/06
CPCB01J31/069C08G83/008C09K11/06C09K2211/145
Inventor 袁国军
Owner NANJING XIAOZHUANG UNIV
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