Photophysical Behavior of Self‐Organizing Derivatives of 10‐ and 12‐Vertex p‐Carboranes, and their Bicyclooctane and Benzene Analogues

Four series of isostructural derivatives of 3‐ring liquid crystalline derivatives containing p‐carboranes (12‐vertex A, and 10‐vertex B), bicyclo[2.2.2]octane (C), or benzene (D) as the variable structural element were investigated for their mesogenic behavior and electronic interactions. Comparative studies demonstrated that the effectiveness of elements A–D in stabilization of the mesophase typically increases in the order: B