Selective charge transfer in donor/acceptor systems bridged by Tröger base derivatives

• DOI: 10.1016/j.orgel.2013.06.024
• Publication Date: 2013-07-10T16:30:50Z
• Authors: Cristina L. Ramírez; Raúl Procaccini; Carlos A. Chesta; Alejandro R. Parise; D. Mariano A. Vera
• Keywords: Acceptor; Linker; Bridge (graph theory); Base (topology)

Abstract Recently, unusual charge transfer properties of two triarylamines bridged through an aliphatic bridge (Troger base) have been reported. The donor/acceptor couple was shown to have an important electronic coupling between its centers for the hole transfer, although in the absence of a π linker. In contrast, we here show, by combining first principles calculations with experimental studies, that the bridge has a practically null role in coupling the electron transfer. This sharp contrast might present an interesting potential in the design of molecular devices.