N-1- and N-2-Anthryl Succinimide Derivatives: C–N Bond Rotational Behaviors and Fluorescence Energy Transfer
摘要:
New rigid bicyclic N-anthrylsuccinimide 1a, 1b, 2a, and 2b were prepared. The C-aryl-N-imide bond rotational barriers, intra/intermolecular arene-arene interactions, and photophysical properties were investigated. The rotational behaviors are more significantly controlled by the position of C-aryl-N-imide connection than the sidewall framework. The fluorescence energy transfer (Phi(ET)) in 1a and 1b was estimated to be 61% and 53%, respectively. The difference is attributed to the position of C-aryl-N-imide connection, which directly influences the relative orientation of donor (naphthalene) and acceptor (anthracene).