Luminescent tetraphenylethene-substituted silanes Conference

cited authors

  • Zhao, Z; Chen, S; Lam, JWY; Chan, CYK; Jim, CKW; Wang, Z; Wang, C; Lu, P; Kwok, HS; Ma, Y; Tang, BZ

fiu authors

abstract

  • Tetraphenylethene (TPE)-substitued silanes [(Ph4C=C) mSi(Ph)n, m = 3-1, n = 3-1] are designed and synthesized, and their optical, thermal, and electrochemical properties are studied. Whereas they are nonluminescent in solutions, they become highly emissive when aggregated in poor solvents (such as water) or fabricated into thin films, demonstrating a novel phenomenon of aggregation-induced emission (AIE). Their amorphous films exhibit high fluorescence quantum yields (54.6-63.7 %). They enjoy high thermal stability with 5 % weight loss occurring at 320-420 °C. Multilayer electroluminescence (EL) devices (ITO/NPB/emitter/TPBi/LiF/Al) utilizing the silanes as emitting layers are fabricated, which give deep blue EL with maximum luminance and external quantum efficiency of 5672 cd/m 2, and 1.6 %, respectively. © 2010 IUPAC.

publication date

  • May 10, 2010

Digital Object Identifier (DOI)

start page

  • 863

end page

  • 870

volume

  • 82

issue

  • 4