A kind of preparation method of second-order nonlinear optical crystal material
A second-order nonlinear and optical crystal technology, which is applied in the growth of polycrystalline materials, chemical instruments and methods, crystal growth, etc., can solve the problems of non-fluorescent and magnetic properties, and unsatisfactory second-order nonlinear optical properties. , to achieve good thermal stability
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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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