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Non-linear optic crystal material of coordination polymer of dinicotinic acid

A pyridinedicarboxylic acid and coordination polymer technology, which is applied in the fields of complex chemistry and optical materials, can solve the problems of difficulty in growing large-sized, high-quality crystals, affecting practical applications, and good physical and chemical properties, and achieves excellent nonlinearity. Optical efficiency, improved physical and chemical properties, good physical and chemical properties

Inactive Publication Date: 2007-02-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic NLO crystals are not easy to grow large-sized, high-quality crystals, and their physical and chemical properties are good, which affects their practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] Example 1: Preparation of Zn(pydc)

[0010] 74mg zinc nitrate Zn(NO 3 ) 2 ·6H 2 O (0.25mmol), 42mg 3,4-pyridinedicarboxylic acid H 2 Stir and mix pydc (0.25mmol) and 10ml of water, adjust to pH = 3 with hydrochloric acid HCl solution, then seal it in a 25ml reactor, heat it to 160□ within 3 hours, react at constant temperature for 4 days, and then press the rate of 5□ / hour Cool to room temperature. Open the reaction kettle to get a large number of colorless block crystals (size up to 2 × 2 × 1.5mm 3 ), which was filtered, washed with water, and dried to obtain Zn(pydc) colorless crystals. Using the Kurtz powder frequency doubling test method, the NLO optical effect of the coordination polymer is measured to be 6 times that of the KDP crystal. Single crystal X-ray diffraction analysis shows that it belongs to the tetragonal crystal system with no center space group Pna2 1 , unit cell parameters: a=8.421(2), b=6.575(1), c=12.913(3) Ȧ, Mr=230.47, V=715.0(3) Ȧ 3 , Z...

example 2

[0011] Example 2: Preparation of Zn(pydc)(22bpy)

[0012] 74mg zinc nitrate Zn(NO 3 ) 2 ·6H 2 O (0.25mmol), 42mg 3,4-pyridinedicarboxylic acid H 2 pydc (0.25mmol), 39mg 2,2'-bipyridine 22bpy (0.25mmol) and 10ml water were stirred and mixed, adjusted to pH = 2 with hydrochloric acid HCl solution, then sealed in a 25ml reactor, heated to 180 within 3 hours □, react at constant temperature for 2 days, then cool down to room temperature at a rate of 5□ / hour. Open the reaction kettle to get a large number of colorless block crystals (size up to 2 × 2 × 1mm 3 ), which was filtered, washed with water, and dried to obtain Zn(pydc) (22bpy) colorless crystals. Using the Kurtz powder frequency doubling test method, the NLO optical effect of the coordination polymer is measured to be three times that of the KDP crystal. Single crystal X-ray diffraction analysis shows that it belongs to monoclinic crystal system, with no center space group Pn, unit cell parameters: a=7.732(1), b=9.27...

example 3

[0013] Example 3: Preparation of Cd(pydc)(22bpy)

[0014] 86mg cadmium nitrate Cd(NO 3 ) 2 ·6H 2 O (0.25mmol), 42mg 3,4-pyridinedicarboxylic acid H 2 pydc (0.25mmol), 39mg 2,2'-bipyridine 2,2'-bpy (0.25mmol) and 10ml water were stirred and mixed, adjusted to pH = 5 with hydrochloric acid HCl solution, then sealed in a 25ml reaction kettle, at 3 Heating to 150□ within one hour, constant temperature reaction for 5 days, and then cooling down to room temperature at a rate of 5□ / hour. Open the reaction kettle to get a large number of colorless block crystals (size up to 2 × 1 × 1mm 3 ), which was filtered, washed with water, and dried to obtain colorless crystals of Cd(pydc)(22bpy). Using the Kurtz powder frequency doubling test method, it does not have the NLO optical effect. Single crystal X-ray diffraction analysis shows that it belongs to the monoclinic crystal system with no center space group P2 1 / n, unit cell parameters: a=7.0363(6), b=17.762(2), c=12.403(1) Ȧ, β=97...

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Abstract

This invention discloses a coordination polymer of dinicotinic acid as nonlinear optic crystalline material. The general chemical formula of the coordination polymer is M(pydc)n(L)m, wherein M is transition metal ion (such as Zn2+ and Cd2+); H2pydc is dinicotinic acid (such as 3,4-dinicotinic acid and 3,5-dinicotinic acid); L is a second ligand (such as 2,2-dipyridyl and o-phenanthroline); m and n are atomic numbers. The coordination polymer is transparent in the range of visible light, and has good nonlinear optic effects and good physicochemical properties. The coordination polymer can be used as a nonlinear optic crystalline material.

Description

technical field [0001] The invention relates to a kind of nonlinear optical material of a pyridinedicarboxylic acid coordination polymer and a preparation method thereof, belonging to the field of optical materials and the field of complex chemistry. Background technique [0002] When the laser propagates in a nonlinear optical (NLO) crystal with non-zero second-order polarizability, nonlinear optical effects such as frequency doubling, sum frequency, difference frequency, and parametric amplification will occur. Therefore, NLO crystals can be used to prepare optical devices such as second harmonic generators, frequency converters, and optical parametric oscillators. [0003] Common NLO crystal materials include inorganic crystals and organic crystals. Common inorganic NLO crystals include phosphate, borate, niobate, titanate, etc. Important inorganic NLO crystals include potassium dihydrogen phosphate (KDP), barium metaborate (BBO), lithium niobate (LiNbO 3 ), potassium ...

Claims

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Application Information

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IPC IPC(8): C07D213/55C08G73/00G02B1/02
Inventor 周有福洪茂椿
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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