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US 12,740,315 B2Granted
Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsNicholas J. Thompson, Hsiao-Fan Chen, Peter Wolohan, Zhiqiang Ji, Chun Lin
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Abstract
Provided are compounds useful in OLED application that have a structure of Formula I where: GD is a donor group and GA is an acceptor group; L1 and L2 are each independently an organic linker or a direct bond; G1 is a non-conjugated moiety; m is an integer of at least 1; n is an integer of at least 1; and when m, n are more than 1, each GD, GA, L1, L2 can be same or different.
Claims19
A compound having a structure of Formula I
- wherein:
- GD is a donor group and GA is an acceptor group, wherein at least one GA does not comprise pyridine;
- L1 and L2 are each independently an organic linker or a direct bond;
- G1 is a non-conjugating moiety selected from the group consisting of
- m is an integer of at least 1;
- n is an integer of at least 1;
- when m or n is more than 1, each GD, GA, L1, L2 can be same or different;
- wherein each GA independently comprises at least one of the chemical moieties selected from the group consisting of nitrile, isonitrile, borane, fluoride, pyridine, pyrimidine, pyrazine, triazine, aza-carbazole, aza-dibenzothiophene, aza-dibenzofuran, aza-dibenzoselenophene, aza-triphenylene, imidazole, pyrazole, oxazole, thiazole, isoxazole, isothiazole, triazole, thiadiazole, and oxadiazole;
- wherein, when G1 is
- then at least one phenyl of G1 is directly bonded to at least two GA, wherein each of the at least two GA is independently nitrile or comprises at least one of the chemical moieties selected from the group consisting of isonitrile, borane, pyridine, pyrimidine, pyrazine, triazine, aza-carbazole, aza-dibenzothiophene, aza-dibenzofuran, aza-dibenzoselenophene, aza-triphenylene, pyrazole, oxazole, thiazole, isoxazole, isothiazole, thiadiazole, and oxadiazole;
- and
- at least one GD comprises at least one of the chemical moieties selected from the group consisting of indole, carbazole, benzothiophene, benzofuran, benzoselenophene, dibenzothiophene, dibenzofuran, dibenzoselenophene,
- wherein each R can be same or different and is an organic linker L1 bonded to G1, or a terminal group selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, and combinations thereof.
10 more elements
An organic light emitting device (OLED) comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a compound having a structure of Formula I
- wherein:
- GD is a donor group and GA is an acceptor group, wherein at least one GA does not comprise pyridine;
- L1 and L2 are each independently an organic linker or a direct bond;
- G1 is a non-conjugating moiety selected from the group consisting of
- m is an integer of at least 1;
- n is an integer of at least 1;
- when m or n is more than 1, each GD, GA, L1, L2 can be same or different;
- wherein each GA independently comprises at least one of the chemical moieties selected from the group consisting of nitrile, isonitrile, borane, fluoride, pyridine, pyrimidine, pyrazine, triazine, aza-carbazole, aza-dibenzothiophene, aza-dibenzofuran, aza-dibenzoselenophene, aza-triphenylene, imidazole, pyrazole, oxazole, thiazole, isoxazole, isothiazole, triazole, thiadiazole, and oxadiazole;
- wherein, when G1 is
- then at least one phenyl of G1 is directly bonded to at least two GA, wherein each of the at least two GA is independently nitrile or comprises at least one of the chemical moieties selected from the group consisting of isonitrile, borane, pyridine, pyrimidine, pyrazine, triazine, aza-carbazole, aza-dibenzothiophene, aza-dibenzofuran, aza-dibenzoselenophene, aza-triphenylene, pyrazole, oxazole, thiazole, isoxazole, isothiazole, thiadiazole, and oxadiazole;
- and
- at least one GD comprises at least one of the chemical moieties selected from the group consisting of indole, carbazole, benzothiophene, benzofuran, benzoselenophene, dibenzothiophene, dibenzofuran, dibenzoselenophene,
- wherein each R can be same or different and is an organic linker L1 bonded to G1, or a terminal group selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, and combinations thereof.
14 more elements
Dependencies are inferred from the claim text.