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Preparation method of second-order nonlinear optical crystal material

A second-order nonlinear, optical crystal technology, used in the growth of polycrystalline materials, chemical instruments and methods, crystal growth, etc., can solve the problems of non-fluorescent properties, magnetic properties, and unsatisfactory second-order nonlinear optical properties. , to achieve the effect of good thermal stability

Active Publication Date: 2016-12-07
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, most of the existing metal-organic framework compounds with second-order nonlinear optical properties use asymmetric ligands as raw materials to form non-central structures with metal ions. The second-order nonlinear optical properties are not ideal, and they do not have fluorescent properties and magnetic properties. nature

Method used

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  • Preparation method of second-order nonlinear optical crystal material
  • Preparation method of second-order nonlinear optical crystal material
  • Preparation method of second-order nonlinear optical crystal material

Examples

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Effect test

Embodiment 1

[0017] 0.263 g NiSO 4 ·6H 2 O (1mmol), 0.156 g 4,4'-bipyridine (1mmol), 0.268 g isophthalic acid-5-sodium sulfonate (1mmol) were dissolved in 20mL water, stirred for 2 h, and then packaged in a 25mL reactor , heated at 120 °C for 36 h, cooled to room temperature, blue crystals were formed, and the yield was about 75%.

[0018] Conclusion: by the attached figure 1 It is known that complex 1 is a novel complex; figure 2 It is known that complex 1 only loses water molecules at 200 °C, and the overall structure does not collapse; image 3 It is known that the fluorescence emission peak of complex 1 is red-shifted relative to the ligand; Figure 4 It is known that the complex 1 has second-order nonlinear optical properties; it is known from FIG. 5 that the complex 1 has antiferromagnetic coupling.

Embodiment 2

[0020] 0.395g of NiSO 4 ·6H 2 O, 0.234g 4,4'-bipyridine, 0.402g isophthalic acid-5-sodium sulfonate were dissolved in 20mL of water. Stir for 2 h, then package in a 25 mL reactor and heat at 120 °C for 36 h. After cooling to room temperature, blue crystals are formed, and the yield is about 75-84%.

Embodiment 3

[0022] 0.329gNiSO 4 ·6H 2 O, 0.195g of 4,4'-bipyridine, 0.335g of isophthalic acid-5-sodium sulfonate were dissolved in 20mL of water. Stir for 2 h, then package in a 25 mL reactor and heat at 120 °C for 36 h. After cooling to room temperature, blue crystals are formed, and the yield is about 75-84%.

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Abstract

The invention relates to a preparation method of a second-order nonlinear optical crystal material. The preparation method comprises the following steps: NiSO4.6H2O, 4,4'-bipyridine and 5-sulfoisophthalic acid monosodium salt are dissolved in water; the materials are stirred for 2 h, packaged in a 25-mL reaction kettle and heated at 120 DEG C for 36 h; the materials are cooled to the room temperature until blue crystals are generated. An MOF (metal-organic framework) compound in the method is different from other second-order nonlinear optical MOF compounds, and is the MOF compound adopting an acentric structure and obtained by synthesizing ligands with a symmetrical structure and metal ions. The second-order nonlinear optical property of the MOF compound is 0.8 times that of urea, and the MOF compound further has phase matching property, fluorescence emission property and magnetic property. The fluorescence emission peak of the compound is at 416 nm, and red shift occurs compared with the ligands. Lone pair electrons are converted into antiferromagnetic coupling at 28 K.

Description

technical field [0001] The invention relates to a second-order nonlinear optical material, in particular to a preparation method of a second-order nonlinear optical crystal material. Background technique [0002] The existing second-order nonlinear optical materials are mostly concentrated in lithium iodate, lithium niobate, etc., and semiconductor crystals, such as tellurium and red silver ore (Ag 3 AsS 3 )Wait. Because of the good thermal stability of these second-order nonlinear materials, no decomposition occurs at higher temperatures. Therefore, it has quickly become a research hotspot, and such reports are more common. However, most of the existing metal-organic framework compounds with second-order nonlinear optical properties use asymmetric ligands as raw materials to form non-central structures with metal ions. The second-order nonlinear optical properties are not ideal, and they do not have fluorescent properties and magnetic properties. nature. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B7/14
CPCC30B7/14C30B29/46
Inventor 关磊王莹
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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