Cyanamide- and oxa-bridged [3.n](3,9)carbazolophanes 1n and 2n (n = 4 and 5) were synthesized. X-ray analysis of 14 and 25 revealed that carbazole rings are taken to be partially overlapped geometry. Electronic spectra of 1n and 2n (n = 4 and 5) showed the existence of transannular π–π electronic interaction between two carbazole rings, whereas fluorescence of these carbazolophanes indicated monomer-like emission.
合成了
氰酰胺和氧杂桥式 [3.n](3,9)
咔唑烷 1n 和 2n(n = 4 和 5)。14 和 25 的 X 射线分析表明,
咔唑环具有部分重叠的几何形状。1n 和 2n(n = 4 和 5)的电子能谱显示两个
咔唑环之间存在跨annular π-π 电子相互作用,而这些
咔唑烷的荧光则显示出类似单体的发射。