Three di-substituted acetylenes in the tolane structure, 4-(trans-4-pentylcyclohexyl)-3′,4′-difluorotolane (1M), 4-(trans-4-heptylcyclohexyl)-4′-fluorotolane (2M), and 4-(4-pentylphenyl)-4′-fluorotolane (3M), were polymerized in the presence of TaCl5-based catalyst. The weight-average molecular weights Mw̄ of the polymers were high than 4 × 105. Photoluminescence (PL) and electroluminescence (EL) of the three polymers made as single-layer device on indium-tin oxide glass (ITO), ITO/polymer/Al, have been comprehensively studied. By changing the structural conditions of polymer, such as introducing the fluorine atom or a long carbon chain to the end group of polymer side chains, the luminescence is clearly enhanced.
|Number of pages||4|
|Journal||Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers|
|Issue number||9 A|
|State||Published - 1 Sep 2001|
- Organic LED