A compound represented by formula (1):
wherein Ar is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted nitrogen-comprising heteroaryl group having 5 to 30 ring atoms; each of L1 and L2 is independently a single bond, a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroarylene group having 5 to 30 ring atoms, or a substituted or unsubstituted divalent linking group wherein 2 to 4 groups selected from an arylene group having 6 to 30 ring carbon atoms and a heteroarylene group having 5 to 30 ring atoms are bonded to each other via a single bond; A is a monovalent group represented by formula (2); and B is a monovalent group represented by formula (5):
wherein R1 to R10 and R21 to R30 are as defined in the description, enables the emission of light of a purer blue (shorter wavelength), a narrower half width (higher color purity), and a single peak with no second peak.
式 (1) 所代表的化合物:
其中 Ar 是具有 1 至 20 个碳原子的取代或未取代的烷基、具有 6 至 30 个环状碳原子的取代或未取代的芳基、或具有 5 至 30 个环状原子的取代或未取代的含氮杂芳基;L1 和
L2 各自独立地为单键、具有 6 至 30 个环碳原子的取代或未取代芳基、具有 5 至 30 个环原子的取代或未取代杂芳基或取代或未取代二价连接基团,其中 2 至 4 个选自具有 6 至 30 个环碳原子的芳基和具有 5 至 30 个环原子的杂芳基的基团通过单键相互键合;A 是式 (2) 所代表的单价基团;以及 B 是式 (5) 所代表的单价基团:
其中 R1 至 R10 和 R21 至 R30 如说明中所定义,可发出更纯净的蓝色光(波长更短)、更窄的半宽(颜色纯度更高)以及没有第二波峰的单波峰。