School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, China.
J Fluoresc. 2012 Mar;22(2):631-8. doi: 10.1007/s10895-011-0999-8. Epub 2011 Oct 19.
Two coumarin derivatives containing electron-transporting benzoxazolyl moiety, 7-(diethylamino)-3-(benzoxazol-2-yl)coumarin (DABOC) and 3-(benzoxazol-2-yl)benzo[5,6]coumarin (BOBC), were synthesized and characterized. The photoluminescence and electroluminescence of the compounds were investigated detailedly. The compounds exhibited strong blue-green emissions in both solution and solid states, but the devices with DABOC as the emitting layer exhibited orange emission and maximum luminous efficiency of 2.8 cd/A and maximum luminance of 8,800 cd/m(2), and the devices with BOBC displayed orange-white emission and maximum luminous efficiency of 0.13 cd/A and maximum luminance of 540 cd/m(2).
两种含电子传输苯并恶唑基的香豆素衍生物，7-(二乙氨基)-3-(苯并恶唑-2-基)香豆素（DABOC）和 3-(苯并恶唑-2-基)苯并[5,6]香豆素（BOBC），被合成并进行了表征。详细研究了化合物的光致发光和电致发光。这些化合物在溶液和固态中都表现出强烈的蓝绿光发射，但以 DABOC 为发射层的器件表现出橙色发射，最大发光效率为 2.8 cd/A，最大亮度为 8800 cd/m(2)，而以 BOBC 为发射层的器件则表现出橙白色发射，最大发光效率为 0.13 cd/A，最大亮度为 540 cd/m(2)。
