| 摘要 |
An organometallic luminescent material comprising the compound of formula (I) of the present invention can emit pure blue light and have high thermal stability:wherein,M<1 >is a monovalent or tetravalent metal selected from the group consisting of Li, Na, K, Zr, Si, Ti, Sn, Cs, Fr, Rb, Hf, Pr, Pa, Ge, Pb, Tm and Md;R is hydrogen or C1-10 alkyl;B is O, S, Se or Te;D is O or S; andn is an integer ranging from 1 to 4.
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