A composition including a first compound is disclosed, wherein the first compound is capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature; wherein the first compound has at least one aromatic ring and at least one substituent R; wherein each of the at least one R is an organic group having at least one X—F bond; wherein each X is independently selected from the group consisting of Si, and Ge; and wherein each of the at least one R is directly bonded to one of the aromatic rings.
揭示了一种包括第一化合物的组合物,其中第一化合物能够在室温下作为有机发光器件中的
磷光发射体起作用;其中第一化合物具有至少一个芳香环和至少一个取代基R;其中至少一个R是具有至少一个X—F键的有机基团;其中每个X独立地选自Si和Ge组成的群;且其中至少一个R直接与芳香环之一结合。