| 摘要 |
A high-efficiency blue light emitting electroluminescence device is provided to improve the light emitting characteristics, solubility and thin film characteristics, thereby imparting high efficiency, high color purity and low driving voltage to an organic electroluminescence device. A blue light emitting electroluminescence polymer is represented by the following formula 1, and comprises a naphthalene derivative, biphenyl derivative and stilbene derivative introduced into the backbone thereof. In formula 1, R is H or a C1-C12 alkyl group, alkoxy group or amine group; x is a number up to 4; and l+m+n=1, wherein each of l, m and n is a real number ranging from 0.01 to 0.99. The polymer has a weight average molecular weight of 10,000-200,000 and a polydispersity index of 1.5-5.
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