电子给体化合物对聚乙烯醇-甲基紫精光色互变材料光色行为的研究

A STUDY ON THE INFLUENCE OF ELECTRON DONOR ON THE PHOTOCHROMIC BEHAVIOUR OF METHYLVIOLOGEN IN POLYVINYALCOHOL FILM

研究了电子给体化合物对甲基紫精在聚乙烯醇膜中光色互变行为的影响。发现在甲基紫精光还原反应中,加入添加剂的给电子能力和吸湿性是影响反应的两个重要因素。给电子能力的增强有利于光照生色速率常数(k)的提高,而吸湿性的增强则加速其逆反应,不利于光还原反应的进行。

In this work,the influence of electron donor on the photochromism of methylviologen inpol-yvinylalcohol film -was researched. The donating elnctron ability and hydroscopicity of donating electron additives are two important factors in photoreduced reaction of methylviologen. The coloration rate (k) of methylviologen increases as the donating electron ability increases, the hydroscopicity of donor accelerate the reversed reaction, so the photoreduced reaction of methylviologen decreases.