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在粉状白钨酸制备偏钨酸铵的工作中,曾注意到当控制溶液的酸度较小时,反应产物见光即转变为蓝色;随后在制备各种有机胺多钨酸盐时,发现了六氢吡啶、乙醇胺和异丙胺偏钨酸盐晶体或水溶液,经紫外光辐照都会转变成蓝色;放在暗处,蓝色逐渐退去,并可反复循环变化,这现象显然对能源利用、显示器件材料开发等方面具有很大的吸引力。本文对六氢吡啶偏钨酸盐(PiPDMT)
In the work of powdery tungstic acid to prepare ammonium metatungstate, it has been noticed that when the acidity of the control solution is small, the reaction product turns blue when it sees light; subsequently, in the preparation of various organic amine polytungstates, it was found The hexahydropyridine, ethanolamine and isopropylamine metatungstate crystal or aqueous solution, will be transformed into blue by UV irradiation; placed in the dark, the blue gradually receded, and the cycle can be repeated changes, which apparently on energy use , Display device material development has great appeal. In this paper, hexahydropyrazine metatungstate (PiPDMT)