Abstract
In this paper, 5,5' -bis [ 4'- methyl- (2,2'- bipyridin- 4- yl)- ethyl ]- 2,2'- bipyridine (BMBPYBPY), a partially conjugated derivative of oligobipyridine, has been synthesized and found to show strong photoluminescence (PL). Compared with the pyridine-based conjugated polymers, the shortened conjugation length shifts the emission color from green to violet-blue. The effects of morphology on its PL properties have been studied. From its as-precipitated powder state, an emission peak at 418 nm can be observed. However the emission spectra from its diffused states such as doped in KBr, or dissolved in CHCl3, as well as from its amorphous film state fabricated by vacuum evaporation are more complex. Also carried out are preliminary electroluminescent studies. Single layer devices ITO/BMBPYBPY/Al do not emit although current can be observed prominently. Double layer devices ITO/TPD/BMBPYBPY/Al show emissions both from TPD and BMBPYBPY.
| Original language | English |
|---|---|
| Pages (from-to) | 359-364 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 665 |
| Publication status | Published - 2001 |
| Externally published | Yes |
| Event | Electronic, Optical and Optoelectronic Polymers and Oligomers - San Francisco, CA, United States Duration: Apr 17 2001 → Apr 20 2001 |
ASJC Scopus Subject Areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering