Tetracationic phosphonium-bridged ladder stilbenes: redox states and electronic properties of highly charged P-heteropolycyclic materials

Abstract

This work describes the development of an air-stable tetracationic P-heteropolycyclic material in which four phosphorus atoms are incorporated into an extended π-conjugated framework. The system, which may be viewed as a doubly phosphonium-bridged ladder stilbene, was found to display a rich redox chemistry and charge-dependent interaction with DNA.