摘要:
Compounds of formula I may be used in optoelectronic devices wherein R1, R2 and R4 are, independently at each occurrence, H, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R3 is H or a is, independently at each occurrence, 1 or 2; b is, independently at each occurrence, an integer ranging from 0-3; c is, independently at each occurrence, an integer ranging from 0-4; Ar is independently at each occurrence, H, or heteroaryl; and at least two of Ar are heteroaryl.
摘要:
Organic compounds of formula I may be used in optoelectronic devices wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R2 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; b is, independently at each occurrence, an integer ranging from 0-3; Ar1 is a direct bond or heteroaryl, aryl, or alkyl or cycloalkyl; Ar2 is heteroaryl, aryl, or alkyl or cycloalkyl; c is 0, 1 or 2; and n is an integer ranging from 2-4.
摘要:
Organic compounds of formula I may be used in optoelectronic devices wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R2 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; b is, independently at each occurrence, an integer ranging from 0-3; Ar1 is a direct bond or heteroaryl, aryl, or alkyl or cycloalkyl; Ar2 is heteroaryl, aryl, or alkyl or cycloalkyl; c is 0, 1 or 2; and n is an integer ranging from 2-4.
摘要:
Compounds of formula I may be used in optoelectronic devices wherein R1, R2 and R4 are, independently at each occurrence, H, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R3 is H or a is, independently at each occurrence, 1 or 2; b is, independently at each occurrence, an integer ranging from 0-3; c is, independently at each occurrence, an integer ranging from 0-4; Ar is independently at each occurrence, H, or heteroaryl; and at least two of Ar are heteroaryl.
摘要:
Organic compounds of formula I may be used in optoelectronic devices wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R2 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; b is, independently at each occurrence, an integer ranging from 0-3; Ar1 is a direct bond or heteroaryl, aryl, or alkyl or cycloalkyl; Ar2 is heteroaryl, aryl, or alkyl or cycloalkyl; c is 0, 1 or 2; and n is an integer ranging from 2-4.
摘要:
A polymer useful in an optoelectronic device comprises structural unit of formula I: wherein Ar is heteroaryl or aryl, other than formula I; R1, R2, R3 and R4 are, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a, c and d are, independently at each occurrence, an integer ranging from 0-4; b is an integer ranging from 0-3; and n is an integer greater than 3.
摘要:
A method for forming multi-emissive phosphorescent layers for a phosphorescent OLED comprises coating a first phosphorescent material from a first solvent onto a first electrode and removing the first solvent to form a first emissive layer; and coating a second phosphorescent material from a second solvent onto the first emissive layer and removing the second solvent to form a second emissive layer, wherein the first and second emissive layers are not cured after coating, and wherein the first emissive layer has negligible solubility in the second solvent.
摘要:
Organic compounds of formula I may be used in optoelectronic devices wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R2 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; b is, independently at each occurrence, an integer ranging from 0-3; Ar1 is a direct bond or heteroaryl, aryl, or alkyl or cycloalkyl; Ar2 is heteroaryl, aryl, or alkyl or cycloalkyl; c is 0, 1 or 2; and n is an integer ranging from 2-4.
摘要:
The present invention provides compositions comprising at least one novel polymeric organic iridium compound which comprises at least one cyclometallated ligand and at least one ketopyrrole ligand. The polymeric organic iridium compositions of the present invention are referred to as Type (2) organic iridium compositions and are constituted such that at least one ligand of the novel organic iridium compound has a number average molecular weight of 2,000 grams per mole or greater (as measured by gel permeation chromatography). Type (2) organic iridium compositions are referred to herein as comprising “polymeric organic iridium complexes”. The novel organic iridium compositions are useful in optoelectronic electronic devices such as OLED devices and photovoltaic devices. In one aspect, the invention provides novel organic iridium compositions useful in the preparation of OLED devices exhibiting enhanced color properties and light output efficiencies.
摘要:
Compounds of formula I may be used in optoelectronic devices wherein R1 and R2 are, independently at each occurrence, H, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is an integer ranging from 0-2; b is 1 or 2; c is an integer ranging from 0-4; and Ar1 and Ar2 are independently heteroaryl.