Position-dependent hexaarylbenzene AIEgens: synthesis, characterization and optical properties

• Published in: New journal of chemistry Vol. 48; no. 14; pp. 6161 - 6167
• Main Authors: Zhao, Wen-Xuan, Yang, Li-Feng, Yu, Dan, Chen, Fei-Yu, Liang, Ling, Cao, Jing-Yi, Yang, Guang, Chen, Shu-Hai, Yamato, Takehiko, Redshaw, Carl, Wang, Chuan-Zeng
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 02.04.2024
• Subjects: Controllability; Emission; Optical properties; Photoelectric materials; Photoelectricity; Photoluminescence
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/d3nj05914f

With the development and exploration of photoelectric materials, the design of tunable and high luminescence efficiency materials remains a challenge. As a promising candidate, aggregation-induced emission (AIE) luminogens have shown significant advantages. Herein, two tetraphenylethene-fused hexaarylbenzene derivatives with strong electron-withdrawing groups (-CN) were synthesized. Both compounds exhibit obvious AIE-active properties with reasonable α AIE = I f  water ( f  water=99%) / I THF (517 for p -TPE-HAB and 9 for o -TPE-HAB ). High photoluminescence quantum yields were recorded to be 63% for p -TPE-HAB and 35% for o -TPE-HAB in THF solution. The position-dependent emission behavior indicates that this hybridization strategy may be used for the design and fabrication of AIEgens with tunable and controllable photophysical properties. Two TPE-fused hexaarylbenzene compounds exhibit obvious AIE-active properties and high luminescence efficiency. The position-dependent emission behavior indicates that this strategy can be used for the design of AIEgens with tunable properties.