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    • 3. 发明申请
    • IMPROVED ELECTROLUMINESCENT STABILITY
    • 改进的电致发光稳定性
    • WO2005073339A2
    • 2005-08-11
    • PCT/US2005001720
    • 2005-01-19
    • UNIVERSAL DISPLAY CORPKNOWLES DAVID BKWONG RAYMOND
    • KNOWLES DAVID BKWONG RAYMOND
    • C07F15/00C09K11/06H01L51/00H01L51/30H01L51/50H05B33/14H01L51/20
    • H01L51/0085C07F15/0033H01L51/0059H01L51/0062H01L51/0081H01L51/5016Y10S428/917
    • An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further comprises an emissive material having the structure: Wherein M is a metal having an atomic weight greater than 40; R3' is a substituent selected from the group consisting of alkyl, heteroalkyl, aryl, heteroaryl, and aralkyl, wherein R'3 is optianally substituted by one or more substituents Z; R5 is a substituent selected from the group consisting of aryl and heteroaryl, wherein said aryl or heteroaryl is unsubstituted or optionally, substituted with one or more non-aromatic groups; ring A is an aromatic heterocyclic or a fused aromatic heterocyclic ring with at least one nitrogen atom that is coordinated to the metal M, wherein the ring A can be optionally substituted with one or more substituents Z; R3 is a substituent selected from the group consisting of H, alkyl, alkenyl, alkynyl, alkylaryl, CN, CF3, CnF2n+1, trifluorovinyl, CO2R, C(O)R, NR2, OR, halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl or heterocyclic group; R4 is a substituent selected from the group consisting of H, alkyl,alkenyl,alkynyl, alkylaryl, CN, CF3, CnF2n+1, triflorovinyl, CO2R, C(O)R, NR2, NO2, OR, halo, aryl, heteroaryl, substituent aryl, substituted heteroaryl or a heterocyclic group; additionally or alternatively, R3 and R4, together from independently a fused 4 to 7-member cyclic group, wherein said cyclic group is cycloalkyl, cycloheteroalkyl, aryl, or heteroaryl; and wherein said cyclic group is optionally substituted by one or more substitutents Z; R6 is a substitutent selected from the group consisting of H, alakyl, alkenyl, alkynyl, alkylaryl, CN, CF3, CnF2n+1, triflurovinyl, CO2R, C(O)R, NR2, NO2, OR, halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl or a heterocyclic group; alternatively, R3' and R6 may be bridged by a group selected from -CR2-CR2-, CR=CR-, -CR2. -O-, -NR-CR2, and -N=CR-; each R is independently H, alkyl, alkenyl, alkynyl, heteroalkyl, aryl, heteroaryl, or aralkyl; wherein R is optionally substituted by one or more substituents Z; each Z is independently a halogen , R', O-R', N(R)', SR', C(O)R', C(O)R', C(O)N(R')2, CN, NO2, SO2, SOR', SO2R', SO3R'; Each R' is independently H, alkyl, perhaloalkyl, alkenyl, alynyl, heteroalkyl, aryl, or eteroaryl; (X-Y) is an ancillary ligand; m is a value from 1 to the maximum number of ligands that may be attached to thte metal; and m+n is the maximum number of ligands that may be attached to the metal. The emissive material itself is also provided. The emissive material may have improved efficiency and stability when incorporated into a light emitting device. Additionally, the devices of the present invention are expected to exhibit improved quantum efficiency.
    • 提供了一种有机发光器件。 该器件具有阳极,阴极和设置在阳极和阴极之间的发射层。 发射层还包含具有以下结构的发射材料:其中M是原子量大于40的金属; R 3'是选自烷基,杂烷基,芳基,杂芳基和芳烷基的取代基,其中R'3被一个或多个取代基Z选择性地取代; R5是选自芳基和杂芳基的取代基,其中所述芳基或杂芳基是未取代的或任选地被一个或多个非芳族基团取代; 环A是具有至少一个与金属M配位的氮原子的芳族杂环或稠合芳族杂环,其中环A可以任选地被一个或多个取代基Z取代; R3是选自H,烷基,烯基,炔基,烷基芳基,CN,CF3,CnF2n + 1,三氟乙烯基,CO2R,C(O)R,NR2,OR,卤素,芳基,杂芳基,取代的芳基 ,取代的杂芳基或杂环基团; R4是选自H,烷基,烯基,炔基,烷芳基,CN,CF3,CnF2n + 1,三氟乙烯基,CO2R,C(O)R,NR2,NO2,OR,卤素,芳基,杂芳基, 取代基芳基,取代的杂芳基或杂环基; 另外或可选地,R 3和R 4一起独立地为稠合的4-7元环状基团,其中所述环状基团为环烷基,环杂烷基,芳基或杂芳基; 并且其中所述环状基团任选被一个或多个取代基Z取代; R6是选自H,烷基,烯基,炔基,烷基芳基,CN,CF3,CnF2n + 1,三氟乙烯基,CO2R,C(O)R,NR2,NO2,OR,卤素,芳基,杂芳基, 取代的芳基,取代的杂芳基或杂环基; 或者,R3'和R6可以被选自-CR2-CR2-,CR = CR-,-CR2的基团桥连。 -O - , - NR-CR 2和-N = CR-; 各R独立地为H,烷基,烯基,炔基,杂烷基,芳基,杂芳基或芳烷基; 其中R任选被一个或多个取代基Z取代; 每个Z独立地为卤素,R',O-R',N(R)',SR',C(O)R',C(O)R',C(O)N(R')2,CN ,NO2,SO2,SOR',SO2R',SO3R'; 每个R'独立地为H,烷基,全卤代烷基,烯基,芳基,杂烷基,芳基或杂芳基; (X-Y)是辅助配体; m是从1到可以连接到金属上的配体的最大数量的值; 并且m + n是可以连接到金属上的配体的最大数量。 发光材料本身也提供。 当掺入发光器件中时,发光材料可以具有提高的效率和稳定性。 此外,预期本发明的器件表现出改善的量子效率。