lengths was developed. Copolymers with methyl methacrylate and cholesteric monomers were prepared; the latter showed liquid crystalline properties. The rate constant of the photocyclization to the bis(β-lactame) structure of various spin-coated polymeric films was determined by irradiation with a HeCd laser (442 nm), whereby two different parameters controlling the rate constant could be found. It was shown
开发了一种新的合成具有不同间隔长度的
甲基丙烯酸甲酯的方法。制备了与
甲基丙烯酸甲酯和胆甾型单体的共聚物。后者显示液晶性质。通过用HeCd激光(442 nm)辐照确定各种旋涂聚合物薄膜的光环化对双(β-内酰胺)结构的速率常数,从而可以找到控制速率常数的两个不同参数。结果表明,可以通过与
甲基丙烯酸甲酯或液晶
甲基丙烯酸酯共聚来控制
嘧啶鎓
油酸酯的5位上的烷基侧链的长度和中性离子发色团的嵌入,从而引起速率常数的显着变化。此外,