A novel bifunctional blue-light material, 9-（pyren-l-yl）-9H-carbazole （CzPy）, has been synthesized and its structure is identified by electron ionization mass spectrometry, 1H NMR, and element analysis. The absorp...A novel bifunctional blue-light material, 9-（pyren-l-yl）-9H-carbazole （CzPy）, has been synthesized and its structure is identified by electron ionization mass spectrometry, 1H NMR, and element analysis. The absorption, photoluminescence spectra and thermal properties were studied, results showedthat CzPy was stable under ambient conditions with a blue-light emission （461 nm）. Additionally, its electroluminescence properties were characterized with four different devices. Results indicated a maximum luminous efficiency reached 1.56 cd/A and maximum luminance up to 3526 cd/m2 at 10 V with commission international De L＇ Eclairage coordinates of （0.20, 0.24） when it was used as emitter. Furthermore, CzPy also indicated hole-transporting ability.展开更多
基金This work was supported by the National Natural Science Foundation of China （No.20671036）, the Natural Science Foundation of Guangdong Province （No.2007A010500008 and No.2008B010800030）, and the Scientific Research Foundation of Nanchang Hangkong University.
文摘A novel bifunctional blue-light material, 9-（pyren-l-yl）-9H-carbazole （CzPy）, has been synthesized and its structure is identified by electron ionization mass spectrometry, 1H NMR, and element analysis. The absorption, photoluminescence spectra and thermal properties were studied, results showedthat CzPy was stable under ambient conditions with a blue-light emission （461 nm）. Additionally, its electroluminescence properties were characterized with four different devices. Results indicated a maximum luminous efficiency reached 1.56 cd/A and maximum luminance up to 3526 cd/m2 at 10 V with commission international De L＇ Eclairage coordinates of （0.20, 0.24） when it was used as emitter. Furthermore, CzPy also indicated hole-transporting ability.
