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A strip-shaped single-layer metal-organic polymer sheet and its preparation method

A metal-organic and polymer technology, applied in the field of new supramolecular material synthesis, can solve problems such as unstable properties and poor optoelectronic properties, and achieve the effect of high electron density, large conjugated structure, and wide potential research value.

Active Publication Date: 2020-06-16
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of existing terpyridine-based metallopolymers such as poor photoelectric properties and unstable properties, the first purpose of the present invention is to provide a strip-shaped single-layer metal polymer with good solubility and stability and excellent photoelectric properties. Organic polymer flakes

Method used

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  • A strip-shaped single-layer metal-organic polymer sheet and its preparation method
  • A strip-shaped single-layer metal-organic polymer sheet and its preparation method
  • A strip-shaped single-layer metal-organic polymer sheet and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0058] 1,2,3,4-Tetrabromo-5,6-di-n-hexaneoxybenzene (Intermediate 1):

[0059]

[0060] 1,2,3,4-tetrabromophenyl-5,6-diol (4.25g, 10mmol), 1-bromo-n-hexane (3.6g, 22mmol), potassium carbonate (3g, 24mmol) and DMF (100mL) Add them together into a 250mL three-neck round bottom flask, then heat and stir at 100°C for 24 hours under nitrogen protection, cool to room temperature, then distill off the solvent under reduced pressure, add the residue to n-hexane and sonicate, filter, and distill the filtrate under reduced pressure , the residue was recrystallized several times with methanol, and after drying, 3.6 g of side chain-substituted polybrominated aromatic hydrocarbons were obtained, with a yield of 61%. NMR 1 H is pictured as figure 1 As shown, the NMR data are: 1 H NMR (400MHz, CDCl 3 )δ4.03(t, J=6.7Hz, OCH 2 R, Alkyl a ,4H),1.83(m,Alkyl b ,4H),1.50(m,Alkyl c 4H), 1.36(td, J=7.0, 3.4Hz, Alkyl d,e 8H), 0.94(dd, J=9.5, 4.5Hz, Alkyl f 6H).13C NMR (125MHz, CDCl 3...

Embodiment 2

[0071] Morphological analysis of metal organic polymers:

[0072] Transmission electron microscopy (TEM) is a test method that can directly observe the microscopic morphology, and the polymer is observed using the transmission electron microscope. Dissolve the polymer in acetonitrile solvent, and ultrasonically disperse it evenly (concentration is 10 -6 mol / L), using an ultra-thin carbon support film as a substrate, an image such as Figure 5 , the morphology of a series of uniformly dispersed ribbon-shaped metal-organic polymer flakes with a diameter of about 10 nm is consistent with the size of the simulated molecular structure.

[0073] Scanning electron microscopy (SEM) mainly uses secondary electron signal imaging to observe the surface morphology of samples, and has the characteristics of direct observation of larger samples, wide magnification range and large depth of field. The powder sample was fixed with conductive glue, and the surface morphology of the polymer wa...

Embodiment 3

[0076] Spectral analysis of metal organic polymers:

[0077] The spectrum absorption of the conjugated polymer material of the present invention adopts a cuvette with an absorption layer of 1 cm, and is analyzed and tested by an ultraviolet-visible absorption spectrometer, thereby judging the MLCT (charge from metal to metal) in ligand conjugation and ligand coordination. ligand transfer). The absorption spectrum of the polymer in acetonitrile solution is as Figure 7 shown.

[0078] Figure 7 It can be seen that the "K" type terpyridine complex and the metal-containing Zn 2+ and Cd 2+ The UV absorption spectra of the three ionic metal organic polymers. All three have broad absorption peaks around 280nm, which is the conjugated absorption peak of terpyridine. In addition, organometallic polymers containing metal Zn and Cd ions have a new UV absorption peak at 340nm and 325nm, which is tpy-M 2+ -tpy absorption peak. This shows that the organic ligand containing terpyrid...

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Abstract

The invention discloses a banding single-layer metal organic polymer sheet and a preparation method. A K-type terpyridyl organic ligand compound and transition metal ions are used for self-assemblingunder the drive of coordination to form the banding single-layer metal organic polymer sheet with the certain width, the banding single-layer metal organic polymer sheet has the good solubility and stability, the good photoelectric property is achieved, and the great application prospect is achieved in the fields of fluorescence, superconductive sensitive films and the like.

Description

technical field [0001] The invention relates to a metal-organic supramolecular polymer, in particular to a strip-shaped single-layer metal-organic polymer sheet formed by self-assembly of a K-type terpyridine organic ligand compound and metal ions and a preparation method thereof, belonging to a new type of supramolecular polymer The field of molecular material synthesis. Background technique [0002] In the field of optoelectronic materials, the currently reported organic optoelectronic polymer materials are mainly synthesized by olefins, alkynes, etc., and the lateral dimensions of the polymers synthesized by these methods are too small, which limits their application in the field of optoelectronic materials. At present, it has been reported that some single-layer polymers with two-dimensional structure show good performance in optoelectronic materials, ultrasensitive films, etc., and have attracted widespread attention. For example, in the literature [A.Fermi, G.Bergamin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 王平山薛晓博蒋志龙陈名钊
Owner CENT SOUTH UNIV
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