The structure–redox chemistry relationship of a new type of azaferrocenophane-based chemosensors, 3 and 4, in the presence of protons and several kinds of metal ions, has been studied. Electrochemical studies, carried out in CH2Cl2, in the presence of increasing amounts of Mg2+, Ca2+, Zn2+ and Ni2+ showed that the wave corresponding to the Fc/Fc+ couple of the uncomplexed ligands is gradually replaced by a new reversible wave at more positive potentials corresponding to the Fc/Fc+ couple of the complexed ligands. The maximum shift of the ferrocene oxidation wave was found for 4b in the presence of Mg2+, whereas for 3f a selective sensing response for Mg2+ in the presence of hydrated Ca2+ cations was observed, with a concomitant highly visual output response consisting of a deep purple colour.
                                    新型氮桥亚
铁心烷类
化学传感器3和4在质子和多种
金属离子存在下的结构-氧化还原
化学关系已被研究。在
CH2Cl2中进行的电
化学研究表明,随着Mg2+、Ca2+、Zn2+和Ni2+含量的增加,未络合
配体的Fc/Fc+电对的波逐渐被一个在更正电位处的新可逆波所取代,该波对应于络合
配体的Fc/Fc+电对。在Mg2+存在下,4b的
二茂铁氧化波的最大偏移被发现,而在
水合Ca2+阳离子存在下,3f对Mg2+具有选择性感应响应,并伴随有深紫色的高度视觉输出响应。