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维生素A(V_A)与一系列胺类化合物反应,生成各种视黄基席夫碱及其金属络合物。通过IR、ESR、NMR和Mossbauer谱图的表征,确证其基本结构。其物性、电性、磁性和吸波性能的测定表明,视黄基席夫碱是一种半导体物质,其铁络合物是一种半导体顺磁性物质。这类材料的密度约为1.1g/cm~3,当吸收衰减大于10dB时,用波导法测得试样1的频宽为8.8～11.2GHz、12.2～14.0GHz,试样2的频宽为14.6～18.0GHz。
Vitamin A (V_A) reacts with a series of amine compounds to form various retinyl Schiff bases and their metal complexes. The basic structures were confirmed by IR, ESR, NMR and Mossbauer spectra. The physical, electrical, magnetic and microwave absorption properties of the determination shows that retinyl Schiff base is a semiconductor material, the iron complex is a semiconductor paramagnetic material. The density of this kind of material is about 1.1g / cm ~ 3. When the absorption attenuation is more than 10dB, the bandwidth of sample 1 measured by the waveguide method is 8.8 ~ 11.2GHz and 12.2 ~ 14.0GHz, the bandwidth of sample 2 is 14.6 ~ 18.0GHz.