Synthesis and Electroluminescent Properties of Red Fluorescent 2-(6,8-di-tert-butyl-2-(4-((3,5-di-tert-butylphenyl)(4-(trimethylsilyl)phenyl)amino)styryl)-4H-chromen-4-ylidene)malononitrile (DCCTBPA) for Organic Light-Emitting Diodes (OLEDs)

摘要

We synthesize a red fluorescent material, 2-(6,8-di-tert-butyl-2-(4-((3,5-di-tert-buty- lphenyl)(4-(trimethylsilyl)phenyl)amino)styryl)-4H-chromen-4-ylidene)malononitrile (DCCTBPA) using Knoevenagel condensation. To explore the electroluminescent properties of materials multilayered OLEDs were fabricated by employing DCCTBPA as a dopant material. This device showed the luminous and power efficiencies of 0.73 cd/A and 0.31 lm/W at 20Â mA/cm2, respectively, with the CIE coordinates of (0.66, 0.34) at 7.0Â V. Compared to a device using DCCPA, this device using DCCTBPA showed the improved EL performances due to reducing the molecular aggregation and thus preventing concentration quenching.View full textDownload full textKeywordsChromene Derivatives, OLED, Red Fluorescence, t-Butyl groupRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/15421406.2012.706556