Novel nonplanar triphenylamine-centered oligofluorenes: Synthesis, thermal, photophysical and electrochemical properties

作者：Zhang Yu Jian; Ouyang Mi; Yu Chun Hui; Hu Bin; Lou Qian Ping; Zhang Cheng^*

来源：Journal of Luminescence, 2011, 131(8): 1758-1764.

DOI：10.1016/j.jlumin.2011.04.025

• Nonplanar oligofluorenes
• Charge transfer
• Hole-injection
• Thermal stability
• Friedel-Crafts reaction

A series of fluorene derivatives containing a triphenylamine (TPA) derivative core and two oligofluorene peripheries was effectively synthesized. These compounds are fluorescent and emission color ranges from blue to red. The spiro-skeleton molecular structure leads to excellent glass transition temperatures and weak intermolecular interactions. Simultaneously, novel nonplanar triphenylamine-centered oligofluorenes solve the spectral stability problem and hole-injection issue for fluorene-based materials. The photophysical properties of 6 and 7 are investigated in solvents with different polarities, which reveal the existence of the Charge Transfer (CT) excited-state in these molecules.

• 出版日期2011-8
• 单位浙江工业大学