1. A compound of formula (I) for an organic electroluminescent device:
wherein X and Y are each independently selected for the group consisting of an alkyl substituted, aryl substituted or unsubstituted carbazole, indolocarbazole, triphenylsilyl, and diphenylphosphine oxide represented by formula (A), (B), (C), (D) or (E),
in which R1, R2, and R3 are each independently selected from the group consisting of a hydrogen, an alkyl having 1 to 15 carbons atoms, an aryl group having 6 to 15 carbons atoms, an alkyl substituted, aryl substituted or unsubstituted triphenylsilyl and diphenylphosphine oxide represented by the formula (D) or (E); m and n are each independently 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.
2. The compound of claim 1, being one of compounds represented by formulae (II) to (XIII):
wherein R1, R2 and R3 are each independently selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 10 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 15 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 15 carbon atoms, an alkyl substituted, an aryl substituted or unsubstituted triphenylsilyl, and a diphenylphosphine oxide represented by the formula (D) or (E); m and n each independently represent 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.
3. A light emitting layer for an organic electroluminescent device, comprising:
a phosphorescent dopant; and
a compound of formula (I)
wherein X and Y are each independently selected for the group consisting of an alkyl substituted, aryl substituted or unsubstituted carbazole, indolocarbazole, triphenylsilyl, and diphenylphosphine oxide represented by formula (A), (B), (C), (D) or (E),
in which R1, R2, and R3 are each independently selected from the group consisting of a hydrogen, an alkyl having 1 to 15 carbons atoms, an aryl group having 6 to 15 carbons atoms, an alkyl substituted, aryl substituted or unsubstituted triphenylsilyl, and diphenylphosphine oxide represented by the formula (D) or (E); m and n are each independently 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.
4. The light emitting layer of claim 3, wherein the compound is one of compounds represented by formulae (II) to (XIII):
wherein R1, R2 and R3 are each independently selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 10 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 15 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 15 carbon atoms, an alkyl substituted, an aryl substituted or unsubstituted triphenylsilyl, and a diphenylphosphine oxide represented by the formula (D) or (E); m and n each independently represent 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.
5. The light emitting layer of claim 3, wherein the phosphorescent dopant is an organic metal complex comprising at least one metal selected from the group consisting of ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum, and gold.
6. The light emitting layer of claim 3, wherein the phosphorescent dopant is one of Ir(ppy)3, Ir(bt)2(acac), FIrpic, and PtOEt3.
7. The light emitting layer of claim 3, wherein the phosphorescent dopant is in a range from 3 wt % to 10 wt % based on total weight of the light emitting layer.
8. An organic electroluminescent device, comprising:
a light emitting layer having a compound of a formula selected from formulae (II) to (XIII) and a phosphorescent dopant
wherein R1, R2, and R3 are each independently selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 10 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 15 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 15 carbon atoms, an alkyl substituted, an aryl substituted or unsubstituted triphenylsilyl, and a diphenylphosphine oxide represented by the formula (D) or (E); m and n each independently represent 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.
9. The organic electroluminescent device of claim 8, wherein the phosphorescent dopant is an organic metal complex comprising at least one metal selected from the group consisting of ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum, and gold.
10. The organic electroluminescent device of claim 8, wherein the phosphorescent dopant is one of Ir(ppy)3, Ir(bt)2(acac), FIrpic, and PtOEt3.
11. The organic electroluminescent device of claim 8, wherein the phosphorescent dopant is in a range from 3 wt % to 10 wt % based on the total weight of the light emitting layer.
12. An organic electroluminescent device, comprising:
an electron transport layer;
a hole block layer; and
an electron block layer,
wherein one of the electron transport layer, the hole block layer and the electron block layer comprises a compound of a formula selected from formulae (II) to (XIII)
wherein R1, R2, and R3 are each independently selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 10 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 15 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 15 carbon atoms, an alkyl substituted, an aryl substituted or unsubstituted triphenylsilyl and a diphenylphosphine oxide represented by the formula (D) or (E); m and n each independently represent 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.
13. A method for forming an organic electroluminescent device, comprising the steps of:
providing a substrate;
forming a hole injection layer on the substrate;
forming a hole transport layer on the hole injecting layer; and
forming a light emitting layer on the hole transport layer having a phosphorescent dopant and a compound of a formula selected from formulae (II) to (XIII)
wherein R1, R2, and R3 are each independently selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 10 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 15 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 15 carbon atoms, an alkyl substituted, an aryl substituted or unsubstituted triphenylsilyl and a diphenylphosphine oxide represented by the formula (D) or (E); m and n each independently represent 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.
14. The method of claim 13, wherein the phosphorescent dopant is an organic metal complex comprising at least one metal selected from the group consisting of ruthenium, rhodium, palladium, silver, rhenium, osmium, iridium, platinum and gold.
15. The method of claim 14, wherein the phosphorescent dopant is one of Ir(ppy)3, Ir(bt)2(acac), FIrpic, and PtOEt3.
16. The method of claim 13, wherein the phosphorescent dopant is in a range from 3 wt % to 10 wt % of the light emitting layer.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A paper holder comprising: an open ended flexible polymer tube encircling first and second telescopic hollow cylinder members; said polymer tube is adhered to said first cylinder member; said second cylinder member being telescopically slidable through the bore of said polymer tube and into the bore of said first cylindrical member; said first cylinder member is open on the inside end and supports a pintle on the outside end; said second cylinder member is partially closed on the inside end and supports a pintle on the outside end; a helical compression spring inside said first cylinder member urges both said first and second cylinder members to extend axially; to prevent said cylinder members from coming apart said first cylinder member is provide with an internal annular ridge and said second cylinder member is provided with and external annular ridge.
2. The telescopic paper holder of claim 1 wherein support pintles are provided on the outside ends of said first and second cylinder members; the circumferential surface of said pintles are encircled with felt strips and felt disks are attached to the ends of such pintles.
3. The telescopic paper holder of claim 1 wherein said foamed polymer tube encompasses said first and second cylinder members; said polymer tube is shorter than a standard width of a roll toilet paper so that the fingers of ones hand can be inserted at either end of said holder in the empty space between said cylinder members and said polymer tube, and if necessary said cylinder members can be slightly tilted, so that insertion or removal of a roll of toilet paper may be accomplished with equal ease and quickness.