Structure and optical properties of new spirobisilole: 2,3,3′,4,4′5-hexaphenyl-1,1′-siprobisilole

Spiro-linked orthogonal bisilole, 2,3,3′4,4′5-hexaphenyl-1,1′-spirobisilole, has been synthesized and characterized. Its crystal structure and optical properties were also investigated. This compound shows high thermal stability and strong bluish-green emission(λmax = 509 nm) with high PL efficiency (55 ± 5%).