Flexible π-conjugated skeletons have been the focus of considerable interest because their dynamic molecular motions can be the basis of interesting molecule-based functions. Representative examples of dynamic π systems include the corannulenes [1] and the sumanenes,[2] which exhibit a bowl-to-bowl inversion behavior, helicene derivatives that undergo flipping,[3] twisted bay-substituted perylene bisimides,[4] and expanded ...
[Strotman, Neil A.; Chobanian, Harry R.; He, Jiafang; Guo, Yan; Dormer, Peter G.; Jones, Christina M.; Steves, Janelle E. Journal of Organic Chemistry, 2010 , vol. 75, # 5 p. 1733 - 1739]
