dihydrophenanthrene-type electron donor are interconvertible upon two-electron transfer. Redox-triggered C-C bond-formation/cleavage caused a drastic change in the torsion angle of the biphenyl unit. Thus, π-delocalization ON/OFF switching was observed as a change in the UV absorption upon electrolysis of the linearly extended analogue with two phenylethynyl groups. A further extended π-system with a molecular length
全氟联苯-2,2'-二基阳离子和其相应的二氢
菲型电子供体在两电子转移后可相互转化。氧化还原触发的CC键形成/断裂导致
联苯单元的扭转角发生急剧变化。因此,观察到π-离域开/关切换是在电解具有两个苯基
乙炔基的线性延伸类似物时UV吸收的变化。分子长度为ca的进一步扩展的π系统。合成了具有两个开关单元的3.5 nm。频谱图和伏安分析表明,这两个单元几乎同时起作用,因为在四阳离子状态下,单元间的静电排斥力很小。因此,本对作为“分子线”的开关单元是有前途的候选者