摘要:
This invention is related to a method for making diether dianhydrides by the reaction of halophthalic anhydride and a metal salt of an aromatic dihydroxy compound in the presence of a solvent and a phase transfer catalyst. Typical phase transfer catalyst include guanidium salts, aminopyridinium salts, or phosphazenium salts.
摘要:
An optoelectronic device comprises a cathode; an electron-transporting layer comprising a compound of formula I; a light emitting-layer; and an anode; wherein R1 and R2 are independently at each occurrence, hydrogen, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R3 is H or alkyl; 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.
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:
The invention relates to compounds of formula I wherein R1, R2, and R4 are independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; R3 and R5 are independently at each occurrence hydrogen, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 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.
摘要翻译: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。
摘要:
The present invention provides electronic devices comprising novel polymeric organic iridium compositions which provide for enhanced device performance. The polymeric organic iridium compositions employed comprise a polymeric organic iridium compound comprising at least one cyclometallated ligand and at least one ketopyrrole ligand. The polymeric organic iridium compositions employed are referred to as Type (2) organic iridium compositions and are constituted such that at least one ligand of the polymeric 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”. In one aspect, the present invention provides optoelectronic devices, such as OLED devices and photovoltaic devices. In another aspect, the invention provides OLED devices exhibiting enhanced color properties and light output efficiencies.
摘要:
The present invention provides electronic devices comprising novel organic iridium compositions which provide for enhanced device performance. The novel iridium compositions employed comprise at least one novel organic iridium compound which comprises at least one cyclometallated ligand and at least one ketopyrrole ligand. The organic iridium compositions employed 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”. In one aspect, the present invention provides optoelectronic devices, such as OLED devices and photovoltaic devices. In another aspect, the invention provides OLED devices exhibiting enhanced color properties and light output efficiencies.
摘要:
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.
摘要:
Oxydiphthalic anhydrides such as 4-oxydiphthalic anhydride are prepared by the reaction of a halophthalic anhydride with an alkali metal carbonate such as potassium carbonate. The reaction proceeds in the presence of a hexaalkylguaninium halide or &agr;,&ohgr;-bis(pentaalkylguanidinium)alkane halide as a phase transfer catalyst.
摘要:
Copolyetherimides compositions having high glass transition temperatures and outstanding ductility are presented. The copolyetherimides having Mw of at least 40,000 comprising isomeric bis(phthalimide) structural units within a relatively narrow range of isomer proportions exhibited Tgs of at least 240° C. and outstanding Notched Izod values. The copolyetherimides comprise oxydianiline residues and structural units of the formulas (I) and (II) (III). The copolyetherimides are characterized by a mole percentage of structural units derived from 4,4′-biphenol in a range from about 55% to about 85% of all bisphenol-derived structural units present in the copolyetherimide composition; a mole percentage of structural units derived from bisphenol A in a range from about 45% to about 15% of all bisphenol-derived structural units present in the copolyetherimide composition; and a total mole percentage of structural units derived from bisphenol A or 4,4′-biphenol of at least 95% of all bisphenol-derived structural units present in the copolyetherimide composition.
摘要:
Oxydiphthalic anhydrides such as 4-oxydiphthalic anhydride are prepared by the reaction of a halophthalic anhydride with an alkali metal carbonate such as potassium carbonate in the presence of a catalyst system comprising an alkali metal bicarbonate such as potassium bicarbonate and a phase transfer catalyst, preferably a tetraarylphosphonium halide.