Synthesis and Crystal Structure of Highly Strained [4]Cyclofluorene: Green-Emitting Fluorophore
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- 作者：Yu-Yu Liu ; Jin-Yi Lin ; Yi-Fan Bo ; Ling-Hai Xie ; Ming-Dong Yi ; Xin-Wen Zhang ; Hong-Mei Zhang ; Teck-Peng Loh ; Wei Huang
- 刊名：Organic Letters
- 出版年：2016
- 出版时间：January 15, 2016
- 年：2016
- 卷：18
- 期：2
- 页码：172-175
- 全文大小：343K
- ISSN：1523-7052
文摘
[4]Cyclo-9,9-dipropyl-2,7-fluorene ([4]CF) with the strain energy of 79.8 kcal/mol is synthesized in high quantum yield. Impressively, hoop-shaped [4]CF exhibits a green fluorescence emission around 512 nm offering a new explanation for the green band (g-band) in polyfluorenes. The solution-processed [4]CF-based organic light emitting diode (OLED) has also been fabricated with the a stronger green band emission. Strained semiconductors offer a promising approach to fabricating multifunctional optoelectronic materials in organic electronics and biomedicine.