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Organic electroluminescent materials and devices

  • US 9,397,302 B2
  • Filed: 10/08/2014
  • Issued: 07/19/2016
  • Est. Priority Date: 10/08/2014
  • Status: Active Grant
First Claim
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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(L1)x(L2)y(L3)z;

    wherein L1, L2, and L3 can be the same or different;

    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 L1, L2, and L3 are each independently selected from the group consisting of;

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