Patent ID: 9397302
Filing Date: 2016-07-19
CPC Classification: C07F,C09K,H01L

Claim Text:
1. A composition comprising a first compound; 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 independently selected from the group consisting of partially fluorinated alkyl, partially fluorinated cycloalkyl, and combinations thereof; wherein each of the at least one R is directly bonded to one of the aromatic rings; wherein in each of the at least one R, C having an F attached thereto is separated by at least one carbon atom from the aromatic ring; wherein the first compound has the formula of M(L wherein L wherein x is 1, 2, or 3; wherein y is 0, 1, or 2; wherein z is 0, 1, or 2; wherein x+y+z is the oxidation state of the metal M; wherein L wherein R wherein R wherein two adjacent substituents of R wherein at least one of the R