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A double ruthenium metal complex and its application in near-infrared electrochromic thin films

A technology of metal complexes and complexes, applied in the direction of ruthenium organic compounds, color-changing fluorescent materials, platinum group organic compounds, etc., can solve the problems of tedious and time-consuming

Active Publication Date: 2020-07-07
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, purely transparent electrodes require multiple layer-by-layer assemblies to achieve high absorbance and contrast ratios, which is very tedious and time-consuming.

Method used

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  • A double ruthenium metal complex and its application in near-infrared electrochromic thin films
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  • A double ruthenium metal complex and its application in near-infrared electrochromic thin films

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1, the synthesis of double ruthenium conjugated metal complexes (formula I)

[0057] 1) Preparation of 1,2,4,5-(2-pyridyl)benzene ligand (Formula III)

[0058] The synthesis of 1,2,4,5-(2-pyridyl)benzene ligand refers to Yao Chang-Jiang, Zhong Yu-Wu, YaoJiannian.Charge Delocalization in a Cyclometalated Bisruthenium ComplexBridged by a Noninnocent 1.2.4.5-Tetra(2- pyridyl) benzene Ligand, J. Am. Chem. Soc. 2011, 133, 15697-15706. The reaction equation is as follows:

[0059]

[0060] 2) Preparation of 4,4',4"-trysteryl terpyridine bis-ruthenium complex (Formula Ⅱ)

[0061] The reaction equation is as follows:

[0062]

[0063] Reflux the reaction flask containing trichloro-4,4',4"-trimethylcarbocarboxyterpyridine ruthenium(III) (37mg, 0.060mmol), silver trifluoromethanesulfonate (52mg, 0.20mmol), 40mL acetone solvent , filtered after reacting for 3h, and added 1,2,4,5-(2-pyridyl)benzene ligand (11.6mg, 0.03mmol), 10mL N,N-dimethylformamide, 10mL ter...

Embodiment 2

[0072] Embodiment 2, preparation of double ruthenium conjugated metal complex multilayer film

[0073] SnO was coated by scraping method 2 : Sb slurry was applied to the glass sheet based on FTO, after natural drying, it was placed in a muffle furnace, and the temperature was gradually raised to 450 ° C, calcined for 15 min, cooled to 80 ° C after the calcination, and immersed in 0.30 mM 4,4 Methanol (0.1M n Bu 4 NOH) solution, soaked at room temperature for 12h, then washed off the unadsorbed dye on the surface with methanol and acetone to obtain a monolayer film of double ruthenium conjugated metal complexes, and then alternately immersed in ZrOCl 2 Multilayer films with different layers can be obtained by complex assembly in aqueous solution and methanol solution of double ruthenium complexes.

[0074] The schematic diagram of the structure of the double ruthenium conjugated metal complex multilayer film prepared in this example is as follows figure 1 As shown, the stru...

Embodiment 3

[0076] Embodiment 3, the assembly of electrochromic device

[0077] according to Figure 4 The schematic diagram of the structure shown in the assembled electrochromic device:

[0078] Prepared with Example 2

[0079] FTO / SnO 2 :Sb / (1) n (Zr) n-1 (n=1, 2, 3 or 4) The thin film is used as the working electrode, the FTO glass is used as the counter electrode, the solvent is acetonitrile, and 0.1M tetra-n-butyl perchlorate ammonium is used as the electrolyte solution. The 200μm thick glass separates the working electrode and the counter electrode, so that there is a certain gap filled with electrolyte solution, and then encapsulated with epoxy resin. All tested electrochromic devices with an area of ​​1 x 1 cm 2 .

[0080] The electrochemical test of the electrochromic device thin film of above-mentioned preparation is as follows Figure 5 As shown in (a), it can be seen that the thin film FTO / SnO 2 : Sb / 1 has two reversible redox peaks at +0.36V and +0.73V (reference el...

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Abstract

The invention discloses a double-ruthenium metal complex and application of the double-ruthenium metal complex in near-infrared electrochromic film. The structural formula of the double-ruthenium conjugated metal complex is shown as formula I, the double-ruthenium conjugated metal complex can be self-adsorbed on the surface of nano SnO2: Sb to form a single-layer film, then a multi-layer film is formed through ion coordination layer-by-layer assembly, and the multi-layer film can serve as a near-infrared electrochromic film to be used for preparing near-infrared electrochromic devices. According to the double-ruthenium conjugated metal complex provided by the invention, the film is formed through simple coordination layer-by-layer assembly, and the double-ruthenium conjugated metal complexhas potential application value in the fields of optical fiber communication, electronic devices and the like.

Description

technical field [0001] The invention relates to a double ruthenium metal complex and its application in near-infrared electrochromic thin films, belonging to the field of near-infrared electrochromic. Background technique [0002] Layer-by-layer assembly is a commonly used method to form multilayer thin films on the surface of metal oxide substrates. In this method, thin films with controllable composition and thickness are formed by selectively adsorbing various functional compounds. The driving forces for layer-by-layer assembly include: electrostatic interactions between polycations and polyanions, hydrogen bonding, covalent linkage, and coordination of metal ligands. So far, a large number of layer-by-layer assembled films based on different substrates have been formed, and these films have good application prospects in the fields of selective permeation and ion transport, sensing, electron transfer and electrochromism. [0003] Electrochromism refers to the phenomenon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K9/02
CPCC07F15/0046C09K9/02C09K2211/1007C09K2211/1029C09K2211/185
Inventor 钟羽武李志娟
Owner INST OF CHEM CHINESE ACAD OF SCI