Facile Synthesis of Carbazole-Containing Semiladder Polyphenylenes for Pure-Blue Electroluminescence

摘要: A type of soluble and thermally stable semiladder polyphenylenes containing carbazole moieties (SLPFCs) have been prepared with a facile short synthetic route. The full characterizations structures properties as well the performances electroluminescence devices new polymers are presented. conjugated backbone SLPFCs contained three kinds constituents:  fluorene, ladder-type tetraphenylene, hexaphenylene. exhibit pure-blue fluorescence (λmax = 445 nm) high efficiency up to 90% in solution. Electrochemical studies indicate that introduction raises HOMO energy levels. Furthermore, single-layer light-emitting using active layer show emission 447 nm, CIE coordinates:  0.15, 0.05) maximum luminescence 5500 cd/m2 luminance 0.556 cd/A. attractive exhibited by establish them good candidates ...