Premium
Synthesis and Properties of a Diazopentacene Analogue
Author(s) -
Li Gang,
Abiyasa Agus Putu,
Gao Junkuo,
Divayana Yoga,
Chen Wangqiao,
Zhao Yang,
Sun Xiao Wei,
Zhang Qichun
Publication year - 2012
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.201200120
Subject(s) - oled , chemistry , phenazine , dichloromethane , excited state , absorption (acoustics) , photochemistry , common emitter , optoelectronics , analytical chemistry (journal) , organic chemistry , solvent , optics , atomic physics , materials science , physics , layer (electronics)
We report the synthesis, optical, and electrochemical properties, as well as the organic light‐emitting diode (OLED) performance of diazopentacene 2,7,11,16‐tetra‐ tert ‐butyldiphenanthro[4,5‐ abc :4′,5′‐ hij ]phenazine (BDPP , 1 ). BDPP has two absorption peaks centered at 350 nm and 460 nm with a shoulder peak at 434 nm and fluoresces bright green light with the emission peak at 481 nm when excited at 360 nm in dichloromethane solution. Interestingly, the UV absorption of BDPP is sensitive to different Lewis acids and organic acids. Calculations revealed that the theoretical band gap is 2.83 eV, which is close to experimental optical data (2.69 eV). Furthermore, OLEDs that use BDPP as the emitter were fabricated. The results indicate that BDPP derivatives might be a good candidate to enhance the efficiency of OLEDs.