Synthesis, Crystal Structures, and Photophysical Properties of Electron-Accepting Diethynylindenofluorenediones
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- 作者：Bradley D. Rose ; Daniel T. Chase ; Christopher D. Weber ; Lev N. Zakharov ; Mark C. Lonergan ; Michael M. Haley
- 刊名：Organic Letters
- 出版年：2011
- 出版时间：April 15, 2011
- 年：2011
- 卷：13
- 期：8
- 页码：2106-2109
- 全文大小：799K
- 年卷期：v.13,no.8(April 15, 2011)
- ISSN：1523-7052
文摘
A series of 6,12-bis[(trialkylsilyl)ethynyl]indeno[1,2-b]fluorene-5,11-diones has been synthesized. X-ray crystallographic analysis of these compounds reveals that triisopropylsilyl (TIPS) substitution on the alkyne terminus affords the largest number of intermolecular 蟺鈭捪€ interactions in the solid state. Conversely, use of trialkylsilyl groups smaller or larger than TIPS furnishes a variety of crystal-packing motifs that contain fewer 蟺鈭捪€ interactions. Electrochemical and photophysical data suggest that these molecules are excellent electron-accepting materials.