A key role of orbital interaction in the main group element-containing π-electron systems

Various types of main group element-containing pi-electron Systems have been synthesized using silole, dibenzoborole, or bis-silicon-bridged stilbene as the key building units. In these pi-electron systems, the orbital interaction between the main group element moiety and the pi-conjugated framework, such as p(pi)-pi* and sigma*-pi* conjugation, plays a crucial role in determining their characteristic electronic structures and makes them promising materials for applications in organic electronics and optoelectronics.