Narasimha Moorthy, Jarugu ; Venkatakrishnan, Parthasarathy ; Natarajan, Palani ; Lin, Zhenghuan ; Chow, Tahsin J. (2010) Nondoped pure-blue OLEDs based on amorphous phenylenevinylene-functionalized twisted bimesitylenes Journal of Organic Chemistry, 75 (8). pp. 2599-2609. ISSN 0022-3263
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jo1001565
Related URL: http://dx.doi.org/10.1021/jo1001565
Abstract
The twisted bimesitylene scaffold hinders crystallization and imparts amorphous nature to the oligophenylenevinylenes (OPVs) generated by 2-and/or 4-fold functionalization. The resultant phenylenevinylenes 1-5 with unique molecular topology exhibit excellent thermal and solid-state luminescence properties. The amorphous nature permits their application as pure-blue emissive materials in OLEDs. Under nondoped conditions, the device performances observed surpass those for analogous and simple oligophenylenevinylenes known so far; for example, the device based on OPV 2 as an emitting material and structurally analogous Bim-DPAB as a hole-transporting material yields pure-blue electroluminescence with an external quantum efficiency of ca. 4.70% at 20 mA/cm2, which is higher than those reported for nondoped pure-blue OPV emitters.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 60750 |
| Deposited On: | 10 Sep 2011 11:41 |
| Last Modified: | 10 Sep 2011 11:41 |
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