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Highly efficient non-doped blue electroluminescent materials for organic light-emitting devices
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jayabharathi, Jayaraman Prabhakaran, Anndurai Thanikachalam, Venugopal Sundharesan, Munusamy |
| Copyright Year | 2016 |
| Abstract | We have synthesized the new blue-light-emitting materials 4,4′-bis(1-(naphthalen-1-yl)-1H-phenanthro[9,10]imidazole-2-yl)-1,1′-biphenyl (NPIP), 4,4′-bis(4-methylnaphthalen-1-yl)-1H-phenanthro[9,10]imidazole-2-yl)-1,1′-biphenyl(MeNPIP) and 4,4′-bis(4-methoxynaphthalen-1-yl)-1H-phenanthro[9,10]imidazole-2-yl-1,1′-biphenyl(MeONPIP) through a two-step procedure using inexpensive catalysts. These compounds showed excellent thermal properties with a very high glass-transition temperature of 195–201 °C due to their rigid molecular backbones and they emit intense blue light in both solution and film. A device fabricated with MeONPIP shows maximum efficiencies (ηex 6.92%; ηc −7.80 cd A−1; ηp 6.10 lm W−1) with a low turn-on voltage and the performances of the device suggest that the phenanthroimidazole unit is an excellent building block for tuning carrier injection properties as well as for blue emission. |
| Starting Page | 62208 |
| Ending Page | 62217 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C6RA11439C |
| Volume Number | 6 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c6/ra/c6ra11439c/c6ra11439c1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C6RA11439C |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
