The Unusual Electrochemical and Photophysical Behavior of 2,2‘-Bis(1,3,4-oxadiazol-2-yl)biphenyls, Effective Electron Transport Hosts for Phosphorescent Organic Light Emitting Diodes | Zendy

Mankit Leung | Zendy; Chih-Chiang Yang | Zendy; JiunHaw Lee | Zendy; Hsin-Hung Tsai | Zendy; ChiFeng Lin | Zendy; ChihYen Huang | Zendy; Yuhlong Oliver Su | Zendy; Chi-Feng Chiu | Zendy

Open Access

The Unusual Electrochemical and Photophysical Behavior of 2,2‘-Bis(1,3,4-oxadiazol-2-yl)biphenyls, Effective Electron Transport Hosts for Phosphorescent Organic Light Emitting Diodes

Author(s) -

Mankit Leung,

Chih-Chiang Yang,

JiunHaw Lee,

Hsin-Hung Tsai,

ChiFeng Lin,

ChihYen Huang,

Yuhlong Oliver Su,

Chi-Feng Chiu

Publication year - 2006

Publication title -

organic letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.94

H-Index - 239

eISSN - 1523-7060

pISSN - 1523-7052

DOI - 10.1021/ol062668+

Subject(s) - phosphorescence , phosphorescent organic light emitting diode , chemistry , oled , photochemistry , intramolecular force , fluorescence , electrochemistry , absorption spectroscopy , absorption (acoustics) , stereochemistry , materials science , organic chemistry , optics , physics , electrode , layer (electronics) , composite material

The fluorescence and phosphorescence of 2,2'-bis(5-phenyl-1,3,4-oxadiazol-2-yl)biphenyl shows good spectral matching with the absorption spectra of the MLCT1 and MLCT3 transitions of Ir(ppy)3. The red-shift of the 0-0 band in the phosphorescence at 77 K is due to the intramolecular pi-pi interactions between the oxadiazole side chains. Maximum brightness of 43,000 cd/m2 with an efficiency of 26 cd/A at 200 cd/m2 was achieved when BOBP was used as the host material for Ir(ppy)3 in the PHOLED study. [structure: see text].

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