Citation:
GUO Hong-Cang, FU Zheng-Sheng, LIAO Le-Xing, YUAN Li. Synthesis and Thermochromic Properties of Two Azo Shiff's[J]. Chinese Journal of Applied Chemistry,
;2009, 26(5): 530-533.
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Two amido azobenzene compounds were synthesized by diazo coupling reaction,which were purified and dried and reacted with salicylaldehyde at 60 ℃ for 4 hours to yield,two azo schiff bases respectively.All the compounds were characterized by elemental analysis,1H NMR and IR.The UV-Vis spectroscopy testing of the compounds showed that compounds A and B have good thermochromism behavior at a heating rate of 1.5 ℃/min;at 45 ℃ compound A's absorptions at 450 nm and 348 nm exhibited linear relationship with time,and compound B's absorptions at 425 nm and 356 nm exhibited linear relationship with time,respectively.The results showed they are good thermochromism materials.
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Keywords:
- thermochromism,
- azo Schiff bases,
- linear relationship
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