| 摘要 |
<p>An organic EL device, comprising an anode and a cathode, and at least one electron injecting and transporting layer containing fluorescent materials; the fluorescent materials contains a compound of benzazoles of the formula: <CHEM> wherein: n is an integer of from 2 to 8; Z is -O-, -NR or -S-; and R and R' are individually hydrogen; saturated aliphatic of from 1 to 24 carbon atoms, for example, propyl, t-butyl, heptyl, and the like; aryl of from 6 to 20 carbon atoms, for example, phenyl and naphthyl, furyl, thienyl, pyridyl, quinolinyl and other heterocyclic systems; or halo such as chloro, fluoro, and the like; or R and R' individually comprise the atoms necessary to complete a fused aromatic ring; B is a linkage unit which is able to conjugately, or unconjugately connect multiple benzazoles. <IMAGE></p> |
