血红素的功能与其大环变形直接相关[1]，这些变形的主要作用是调节大环N4核的尺寸[2-4]，通过改变核尺寸进而调节中心金属的电子结构 [5-7].我们以新开发的代表性的非平面卟啉为模型化合物，以Mn到Zn金属为对象，研究了大环变形对它们电子状态的影响及规律，初步勾勒了血红素中超氧配体与超氧离子与大环变形之间的关系[4](Fig.1).为揭示血红素的载氧和催化氧化功能提供直接的实验支持.
过去几年里,我们发展了几种新型的三蝶烯衍生大环主体分子,并发现它们在分子识别与组装中显示广泛的用途.1,2最近,基于手性三蝶烯结构基元,我们3还设计合成了一种全新结构的具有螺旋手性空腔的大环芳烃分子,命名为螺芳烃(helixarene).研究发现,该种新型的大环主体分子不仅对于含有三甲铵盐的手性客体具有高对映选择性的分子识别作用,而且对于包括有机铵盐、各种含氮杂环盐以及四氰基取代苯醌等中性客体都表
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