【摘要】 本文根据糠酸阳离子交换树脂的红外吸收光谱和ESR,讨论了它的化学结构。认为在特定的反应条件下,糠酸呋喃环经过开环,失羧和交联反应,生成了共轭的不饱和C=C键。由ESR发现这种树脂有未成对电子,其g因子为2.0088,树脂中未成对电子是高度共轭的非定域化的,从而确定了它具有半导体性。由树脂的电阻率与温度的关系,发现这种树脂是一种本征半导体;它在不同的外加电压下,可见光和紫外光辐照时,有明显的光电效应。更多还原

【Abstract】 The chemical structure of cation exchange resin of furoic acid was discussed on the infrared absorption spectra and ESR. The structure is regarded as a conjugating unsaturated C=C linkage formed by the acidic cleavage of furan ring of furoic acaid nd condensation reaction of the cleavage compounds under certain conditions. Unpaired electrons of appreciable concentration have been found in the resin of furoic acid by means of ESR spectroscopy. The g factor of the spectra of resin of furoic acid was 2.0088. Hence, the electrons in resin would be expected to be unlocalized electrons which are stabilized via resonance in high conjugation. Therefore, the resin is semiconductive. According to the resistance-temperature characteristic of resin measured at various temperature, the resin is found to be an intrinsic semiconductor.The photoconductivity of the resin was measured under visible light and ultraviolet light at various voltage.更多还原