A co-bis-imidazolium metal framework compound and its preparation method and application

A frame compound and metal frame technology, applied in the direction of organic chemistry methods, cobalt organic compounds, chemical instruments and methods, etc., can solve the problem that the nonlinear optical properties of metal-organic coordination polymers are not many, and achieve the easy operation of the preparation method, Strong third-order nonlinear optical saturable absorption performance, the effect of simple preparation method

Inactive Publication Date: 2018-04-20
HENAN INST OF SCI & TECH
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Problems solved by technology

However, there are not many studies on the nonlinear optical properties of metal-organic coordination polymers.
Hou et al. studied some coordination polymers constructed by benzimidazole and its derivatives. These compounds exhibited excellent nonlinear inverse saturated absorption or refraction effect in the solution state, but metal-organic coordination with saturated absorption properties Polymers have not been reported [Inorg.Chim.Acta.2001,316,140; Inorg.Chem.2002,41,4068]

Method used

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  • A co-bis-imidazolium metal framework compound and its preparation method and application
  • A co-bis-imidazolium metal framework compound and its preparation method and application
  • A co-bis-imidazolium metal framework compound and its preparation method and application

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preparation example Construction

[0016] A preparation method of Co-bisimidazolyl metal framework compound, comprising the following steps:

[0017] Put the transition metal salt containing Co(II), 1,2,4,5-benzenetetracarboxylic acid, 1,2-methyleneimidazolylbenzene and distilled water into the reaction kettle, stir for 20 minutes, and adjust the reaction with NaOH pH value of the liquid, closed the reactor, and reacted for 3 days in a constant temperature environment of 120°C. After the reaction, the reactor was naturally cooled to room temperature, filtered the reaction liquid, and washed the filter cake with water and ethanol to obtain red blocky crystals. Air-dried naturally to obtain a red blocky solid. The molar ratio of the transition metal salt containing Co(II), 1,2,4,5-benzenetetracarboxylic acid, 1,2-methyleneimidazolylbenzene and distilled water is 2:1:2:600. The transition metal salt containing Co(II) is selected from one of cobalt acetate tetrahydrate, cobalt nitrate hexahydrate, cobalt chloride ...

Embodiment 1

[0022] A kind of Co-two imidazolyl metal framework compound, the chemical formula of this metal framework compound is: {Co 2 (1,2-BIB)(BTC)} n , where 1,2-BIB is 1,2-methyleneimidazolylbenzene, and BTC is deprotonated 1,2,4,5-benzenetetracarboxylic acid. The crystallization of the metal framework compound is in the triclinic system, the P-1 space group, and the unit cell parameters are: α=77.450(3)°, β=85.065(3)°, γ=84.844(3)°, The structural unit of the metal framework compound includes two Co(II) ions, a 1,2-BIB molecule and 2 BTC molecular fragments at different symmetrical positions; the two Co(II) ions adopt different coordination structures type, in which one Co(II) ion coordinates with five oxygen atoms and one nitrogen atom respectively to complete the hexacoordinated octahedral configuration, in which the five oxygen atoms come from the carboxylate groups of three different BTC ions, and the nitrogen atom comes from 1,2-BIB molecule; the other Co(II) ion adopts a...

Embodiment 2

[0027] A kind of Co-two imidazolyl metal framework compound, the chemical formula of this metal framework compound is: {Co 2 (1,2-BIB)(BTC)} n , where 1,2-BIB is 1,2-methyleneimidazolylbenzene, and BTC is deprotonated 1,2,4,5-benzenetetracarboxylic acid. The crystallization of the metal framework compound is in the triclinic system, the P-1 space group, and the unit cell parameters are: α=77.450(3)°, β=85.065(3)°, γ=84.844(3)°, The structural unit of the metal framework compound includes two Co(II) ions, a 1,2-BIB molecule and 2 BTC molecular fragments at different symmetrical positions; the two Co(II) ions adopt different coordination structures type, in which one Co(II) ion coordinates with five oxygen atoms and one nitrogen atom respectively to complete the hexacoordinated octahedral configuration, in which the five oxygen atoms come from the carboxylate groups of three different BTC ions, and the nitrogen atom comes from 1,2-BIB molecule; Another Co(II) ion adopts a t...

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Abstract

The invention belongs to a Co-bis-imidazolium metal framework compound and its preparation method and application; the chemical formula of the metal framework compound is: {Co2(1,2-BIB)(BTC)}n, wherein, 1,2-BIB It is 1,2-methyleneimidazolylbenzene, and BTC is deprotonated 1,2,4,5-benzenetetracarboxylic acid; it has a simple and easy preparation method, low cost, can be stable below 230 degrees, and has Strong third-order nonlinear optical saturated absorption performance, the third-order nonlinear saturated absorption coefficient β of the material is ‑4.55×10‑6m / W, and the third-order nonlinear polarizability χ(3) is 7.33×10‑8es , can be widely used in laser pulse compression (Q-switching and mode-locking) and other fields.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a Co-bis-imidazolium metal framework compound and its preparation method and application. Background technique [0002] Ultrashort pulse laser has broad application prospects in optical fiber communication, ultrafine micromachining, medicine, nonlinear optics and other fields. The main way to obtain ultrashort pulse laser is to use passive mode-locking technology and saturable absorption characteristics of materials to achieve. As a nonlinear absorption phenomenon, saturated absorption usually occurs at the peak of the linear absorption spectrum of the material, because the absorption coefficient at the peak has a strong light intensity dependence. As early as the 1960s, saturable absorption has been widely used in the compression of laser pulses (Q-switching and mode-locking), and since the 1970s, most of the optical bistable devices studied are based o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/06C08G83/00G02F1/355G02F1/361
CPCC07B2200/13C07F15/065C08G83/008G02F1/3551G02F1/3611G02F1/3619
Inventor 连照勋王敏赵宁刘萍安彩霞
Owner HENAN INST OF SCI & TECH
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