Citation: Qing Guo He, Jian Gong Cheng, Feng Lian Bai. Synthesis and properties of a star-shaped organic material with triphenylamine and N-vinyl carbazole units[J]. Chinese Chemical Letters, ;2007, 18(8): 920-922. doi: 10.1016/j.cclet.2007.05.055 shu

Synthesis and properties of a star-shaped organic material with triphenylamine and N-vinyl carbazole units

a Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
b Key Laboratory of Organic Solids, Centre for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China

Received Date: 19 March 2007

Fund Project: This study was supported by NNSFC (No. 50503024), 973 (No. 2002CB613401), "863 program" (No. 2006AA03Z312), and STCSM (No. 05JC14077, 05PJ14108, 04DZ11901).

A starburst triphenylamine cored N-vinyl carbazole (V-Cz) branched compound was designed and synthesized via optimized Heck reaction in a yield of 40-60%. Moderate yield came from decomposition of V-Cz and self-coupling of triiodo-triphenylamine.TCz-TPA adopts a highly twisted propeller conformation by molecular mechanical optimization. It is readily soluble for its highly twisted conformation. Transparent and pinhole free films could be easily fabricated by spin-coating for its starburst structure. It emits blue-greenish light in CH₂Cl₂ peaked at 460 nm with a narrow full-width at half-maximum (FWHM) of 65 nm. As compared, the absorption peaks of the spin-coated film blue shifted and emission peak red shifted to 510 nm with a FWHM of 96 nm.
- Starburst,
- Triphenylamine,
- Carbazole,
- Heck reaction,
- Photoluminescence
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