FCM Institute, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China.
J Fluoresc. 2011 Jan;21(1):433-41. doi: 10.1007/s10895-010-0732-z. Epub 2010 Oct 30.
New aggregation-induced emission materials derived from diphenylcarbazole triphenylethylene were prepared. The thermal, photophysical, electrochemical and aggregation-induced emissive properties were investigated. All the compounds had strong blue light emission capability and excellent thermal stability. Their maximum fluorescence emission wavelengths were between 450 to 460 nm in TLC plates, while their glass transition temperatures ranged from 162.2 to 182.4 °C. The decomposition temperatures of the synthesized compounds were all well over 500 °C. The synthesized compounds possessed aggregation-induced emission (AIE) properties, which exhibited enhanced fluorescence emissions in aggregation states or in solid states. The HOMO energy levels estimated from the oxidation potentials were found in the range from 5.49 to5.52 eV. The lowest unoccupied molecular orbital/highest occupied molecular orbital (LUMO/HOMO) energy gaps (ΔEg) for the compounds were estimated from the onset absorption wavelengths of UV absorption spectra and ranged from 3.04 to 3.20 eV.
合成了一系列基于二苯并咔唑三苯乙烯的聚集诱导发光材料。研究了它们的热性能、光物理性能、电化学性能和聚集诱导发光性能。所有化合物均具有较强的蓝光发射能力和良好的热稳定性。在 TLC 板上，它们的最大荧光发射波长在 450 到 460nm 之间，而玻璃化转变温度范围在 162.2 到 182.4°C 之间。合成化合物的分解温度均高于 500°C。这些化合物具有聚集诱导发光（AIE）性质，在聚集态或固态下表现出增强的荧光发射。从氧化电位估算出的 HOMO 能级在 5.49 到 5.52eV 范围内。根据紫外吸收光谱的起始吸收波长估算出化合物的最低未占据分子轨道/最高占据分子轨道（LUMO/HOMO）能隙（ΔEg）在 3.04 到 3.20eV 之间。
