New pyrene cored small organic molecule with a flexible alkyl spacer: a potential solution processable blue emitter with bright photoluminescence
| Title | New pyrene cored small organic molecule with a flexible alkyl spacer: a potential solution processable blue emitter with bright photoluminescence |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Valsange, NG, Wong, FL, Shinde, D, Lee, CS, Roy, VAL, Manzhos, S, Feron, K, Chang, S, Katoh, R, Sonar, P, Wadgaonkar, PP |
| Journal | New Journal of Chemistry |
| Volume | 41 |
| Issue | 19 |
| Pagination | 11383-11390 |
| Date Published | OCT |
| Type of Article | Article |
| Abstract | A new pyrene cored small organic molecule viz. 1,3,6,8-tetrakis(4-((5-(9H-carbazol-9-yl) pentyl)oxy) phenyl)pyrene (PY-II) was designed and synthesized. The carbazole moiety with an alkyl spacer was introduced at 1, 3, 6 and 8 positions of the pyrene core to improve the charge transport properties and solution processability. PY-II exhibited excellent solubility in common organic solvents and high thermal stability up to 345 degrees C. The photoluminescence quantum yield (PLQY) of PY-II in solution was found to be 0.9 with bright blue emission near 450 nm which is just appropriate for the human eye. The solution processed non-doped OLED device fabricated using PY-II as an emissive layer afforded a pure blue emission with CIE coordinates of 0.16 and 0.16, a power efficiency of 0.17 lm W-1, a maximum current efficiency of 0.41 cd A(-1) and a maximum brightness of 202 cd m(-2). |
| DOI | 10.1039/c7nj01921a |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 3.277 |
Divison category:
Polymer Science & Engineering
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