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:
In various embodiments the present invention comprises 2,4,6-trisubstituted-1,3,5-triazine capping agents comprising one, two, or three leaving groups as substituents with any remaining substituents being essentially inert to reaction with a nucleophilic group on a polymer or monomer, or reactive with a nucleophilic group on a polymer or monomer at a slower rate than any leaving group. The invention also comprises polymers or monomers with nucleophilic groups capped with a triazine moiety. Still other embodiments of the invention comprise processes for capping nucleophilic groups in a polymer or monomer which comprises combining and reacting the polymer or monomer with a triazine-comprising capping agent.
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:
A process for the production of polycarbonate be melt-polycondensing an aromatic dihydroxy compound and diphenylcarbonate, the process comprising adding to the polycarbonate under melt conditions a compound of the formula (I) wherein R1 and R3 may be the same or different and are selected from the group consisting of alkoxy, phenoxy, benzoxy, aryloxy, phenyl and aryl groups, R2 is selected from the group consisting of alkyl, phenyl, aryl, or aralkyl groups.
Abstract:
Described herein is an organic opto-electronic device comprising a cathode comprising at least one zero-valent metal; an anode; an opto-electronically active organic material; wherein said cathode is in contact with at least one organic ammonium salt. In certain embodiments, the organic ammonium salt has structure (I), wherein R 1 -R 4 are independently at each occurrence a C 1 -C 20 aliphatic radical, a C 3- C 20 cycloaliphatic radical, or a C 3 -C 2O aromatic radical is disclosed and wherein X - is selected from the group consisting of monovalent inorganic anions, monovalent organic anions, polyvalent inorganic anions, polyvalent organic anions, and mixtures thereof.
Abstract:
Crosslinkable polymeric materials are disclosed useful for the temporal stabilization of a poling- induced noncentrosymmetric host lattice containing guest nonlinear optical chromophores . The materials are also suitable as, crosslinkable coatings in the absence of chromophores. Also disclosed is a method of srosslinking such polymeric material comprising reacting i)a crosslinkable polymeric material comprising olefin groups and ii) a crosslinking agent comprising electron deficient olefin groups, at a temperature at which crosslinking occurs.
Abstract:
A process for the production of polycarbonate having increased end-cap levels, the process comprising adding a terminal blocking agent of formula (I), wherein R1 is a propoxy or butoxy and R2 is selected from the group consisting of C1-C30 alkyl, C1-C30 alkoxy, C6-C30 aryl, C7-C30 aralkyl, and C6-C30 aryloxy.
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:
Described herein is a transparent electrode comprising at least one optically transparent electrically conductive layer; and at least one optically transparent intermediate layer, wherein said optically transparent conductive layer is in contact with said optically intermediate layer, and wherein said optically transparent conductive layer and said optically transparent intermediate layer together transmit at least 50 percent of incident light having a wavelength in a range between about 200 and about 1200 nanometers, said optically transparent conductive layer having a bulk conductivity at least 100 Siemens per centimeter (S/cm), said optically transparent intermediate layer being comprised of a material having a bulk electrical conductivity at room temperature less than 10 -12 Siemens per centimeter and a band gap of 3.5 eV. Described herein are also methods for forming a transparent electrode, and transparent electronic devices comprising at least one transparent electrode.
Abstract:
Optoelectronic devices are derived from polymers that include structural units of formula (I) wherein R la and R 2a are independently C 10-20 alkenyl, C 3-20 alkynyl, C 3-20 substituted alkenyl, C 3-20 substituted alkynyl, or a combination thereof; and R lb is alkyl, substituted alkyl, or a combination thereof.