Abstract:
Polyfluorene polymers and copolymers having substantial amounts (10-100%) of fluorenes coupled at the 2 and 5 positions of fluorene are useful as active layers in OLED devices where triplet energies > 2.10 eV are required.
Abstract:
In one aspect, the invention provides a polyarylether having pendant carbazolyl groups. The polymers of the invention are made by the bromination of a polyarylether, which is then reacted with a carbazole moiety. The polymers may have some amount of unsubstituted aromatic groups and some brominated aromatic groups also. These polymers find use in optoelectronic device. Thus, in another aspect, the invention provides optoelectronic device comprising a polyarylether having pendant carbazolyl groups.
Abstract:
The present invention provides compositions comprising at least one novel organic iridium compound which comprises at least one cyclometallated ligand and at least one ketopyrrole ligand. The organic iridium compositions of the present invention are referred to as Type (1) organic iridium compositions and are constituted such that no 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 (1) organic iridium compositions are referred to herein as comprising "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.
Abstract:
Optoelectronic devices include a polymer composition derived from reaction between a hydrosiloxane and a polyfluorene comprising structural units of formula (I) wherein R 1 and R 2 are independently alkyl, substituted alkyl, alkenyl, alkynyl, substituted alkenyl, substituted alkynyl, alkyloxy, substituted alkoxy, alkenoxy, alkynoxy, substituted alkenoxy, substituted alkynoxy, or a combination thereof; Ar 1 and Ar 2 are independently aryl or substituted aryl; m and n are independently 0 or 1 ; and at least one of R 1 and R 2 is alkenyl, alkynyl, substituted alkenyl, or substituted alkynyl.
Abstract:
A new silicone condensation reaction, the condensation between an alkoxy silane or siloxane and an organo- hydrosilane or siloxane and catalysts therefore is described and claimed.
Abstract:
Polycarbonates containing low or undetectable levels of Fries rearrangement products and comprising repeat units derived from one or more of resorcinol, hydroquinone, methylhydroquinone, bisphenol A, and 4,4’-biphenol have been prepared by the melt reacti on of one or more of the aforementioned dihydroxy aromatic compounds with an ester-substituted diaryl carbonate such as bis-methyl salicyl carbonate. Low, or in many instances undetectable, levels of Fries rearrangement products are found in the product polycarbonates obtained as the combined result of a highly effective catalyst system which suppresses the Fries reaction and the use of lower melt polymerization temperatures relative to temperatures required for the analogous polymerization reactions using diphenyl carbonate.
Abstract:
An optoelectronic device comprises a cathode; an electron-transporting layer comprising a compound of formula I; formula I a light emitting-layer, and an anode; wherein R1 and R2 are independently at each occurrence, hydrogen, a C rC2U aliphatic radical a CyC2U aromatic radical or a d~ C-JO cycloaliphatic radical; R3 is H or alky]; a and b are, independently at each occurrence 0, or an integer ranging from 1 to 3; n is 2 or 3; and Ar is an aryl.
Abstract:
The invention relates to polymers useful in optoelectronic devices and comprising structural unit of formula (I), wherein R 1 and R 2 are independently at each occurrence, hydrogen, a C 1 -C 20 aliphatic radical, a C 3 -C 20 aromatic radical, or a C 3 -C 20 cycloaliphatic radical; R 3 is H or alkyl; a and b are, independently at each occurrence 0, or an integer ranging from 1 to 3; and Ar is a direct bond or aryl.
Abstract:
The invention relates to compounds of formula I wherein R 1 , R 2 , and R 4 are independently at each occurrence a C 1 -C 20 aliphatic radical, a C 3 - C 20 aromatic radical, or a C 3 -C 20 cycloaliphatic radical; R 3 and R 5 are independently at each occurrence hydrogen, a C 1 -C 20 aliphatic radical, a C 3 -C 20 aromatic radical, or a C 3 -C 20 cycloaliphatic radical; and a, b and d are independently 0 or an integer ranging from 1 to 3. The invention further relates to polymers derived from compounds of formula I. The polymers may be polyesters, polyethers, polycarbonates, polyestercarbonates, polyetherketones, or polyethersulfones. Compounds and polymers of the invention find use in light emitting devices.
Abstract translation:本发明涉及式I化合物,其中R 1,R 2,R 4和R 4各自独立地为C 1 C 20 -C 20脂肪族基团,C 3 -C 20芳族基团或C 3 H 3 -C 20脂环族基团; R 3和R 5在每次出现时独立地为氢,C 1 -C 20脂族基团, C 3 -C 20芳族基团或C 3 -C 20脂环族基团; C 3 -C 20芳族基团或C 3 -C 20 -C 20脂环族基团; 并且a,b和d独立地为0或1至3的整数。本发明还涉及衍生自式I化合物的聚合物。聚合物可以是聚酯,聚醚,聚碳酸酯,聚酯碳酸酯,聚醚酮或聚醚砜。 本发明的化合物和聚合物可用于发光器件中。
Abstract:
Optoelectronic devices include a polymer composition derived from reaction between a hydrosiloxane and a polyfluorene comprising structural units of formula (I) wherein R 1 and R 2 are independently alkyl, substituted alkyl, alkenyl, alkynyl, substituted alkenyl, substituted alkynyl, alkyloxy, substituted alkoxy, alkenoxy, alkynoxy, substituted alkenoxy, substituted alkynoxy, or a combination thereof; Ar 1 and Ar 2 are independently aryl or substituted aryl; m and n are independently 0 or 1 ; and at least one of R 1 and R 2 is alkenyl, alkynyl, substituted alkenyl, or substituted alkynyl.