摘要:
A new silicone condensation reaction, the condensation between an alkoxy silane or siloxane or a dihydric phenol and an organo-hydrosilane or siloxane and catalysts therefore is described and claimed.
摘要:
Disclosed is a crosslinked polysiloxane network comprising both residual Si—H linkages and a Lewis acid catalyst, wherein the network is derived from a linear hydridosiloxane, a branched hydridosiloxane, a cyclic hydridosiloxane or a mixture of a linear hydridosiloxane or branched hydridosiloxane and a cyclic hydridosiloxane. Disclosed also is a method to produce the crosslinked polysiloxane network, alternatively accompanied by a silane with aliphatic, aromatic, or cycloaliphatic substituents by reacting in the presence of an effective amount of a Lewis acid catalyst a linear hydridosiloxane, a branched hydridosiloxane, a cyclic hydridosiloxane or a mixture of a linear hydridosiloxane or branched hydridosiloxane and a cyclic hydridosiloxane.
摘要:
Novel metal porphyrin compositions useful as organic phosphors are provided. The novel compositions are prepared from commercially available porphyrin-containing starting materials. In one instance a novel palladium-containing porphyrin composition having a number average molecular weight of greater than 12,000 grams per mole was prepared from 5,10,15,20-tetrakis(3′,5′-di(hydroxy)phenyl)-21H-23H-porphyrin by reaction first with palladium(II) acetylacetonate, followed by reaction with 2-bromo-2-methylpropionyl bromide, and subsequent group transfer reaction of the alpha-bromo ester groups with 9,9-dioctyl-2-vinylfluorene in the presence of CuBr as a radical initiator. The product polymer exhibited a number average molecular weight of 12,884 grams per mole, a weight average molecular weight of 14,338 grams per mole, and a robust red phosphorescent emission. Porphyrin containing copoylmers comprising structural units derived from 9,9-dioctyl-2-vinylfluorene and 9-anthracenylmethyl methacrylate were prepared in a similar fashion.
摘要:
Crosslinking between polymer chains having olefin groups occurs by heating the polymer chains in the presence of a catalyst. Mixtures of polymer and catalyst can be dried and cast into films at ambient temperatures and remain non-crosslinked and soluble for extended periods. However, upon heating of the polymer to temperatures of about 300° C. or greater in the presence of a catalyst, the polymer chains of the film are cured to produce an insoluble crosslinked matrix. The sudden and relatively complete nature of the crosslinking between the polymers under specific conditions is particularly useful to allow chromophores poled in a noncrosslinked polymer mixture to retain their uniform orientation after crosslinking has occurred.
摘要:
Optoelectronic devices include polysiloxanes derived from hydrosilation of an organometallic compound of formula L2MZ, wherein L and Z are independently bidentate ligands; at least one of L and Z comprises alkenyl, alkenylaryl, alkenyloxy, alkenyloxyaryl, alkynyl, alkynylaryl, alkynyloxy, alkynyloxyaryl, substituted alkenyl, substituted alkenylaryl, substituted alkenyloxy, substituted alkenyloxyaryl, substituted alkynyl, substituted alkynylaryl, substituted alkynyloxy, substituted alkynyloxyaryl, acrylate, methacrylate, or a combination thereof; and M is Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Ga, Ge, In, Sn, Sb, Tl, Pd, Bi, Po, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu.
摘要:
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 R1-R4 are independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 cycloaliphatic radical, or a C3-C20 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.
摘要:
A surface modified electrode comprising at least one conductive layer, and at least one reduced polymeric material, wherein the reduced polymeric material comprises at least one additional electron relative to a corresponding neutral polymeric precursor; and at least one cationic species is provided. Coating compositions and coated articles comprising the reduced polymeric materials are also provided. The coating compositions lower the work function of the electrode surface, thereby facilitating the production of more efficient electrooptic devices.
摘要:
In one embodiment the present invention discloses a method for making a first layer in an electroactive device comprising the steps of (i) preparing a composition by mixing at least one adhesion promoter material and at least one electroactive material; and (ii) depositing said composition onto a second electroactive layer of said electroactive device; and (iii) optionally further depositing a third electroactive layer onto the surface of said first layer opposite the second layer, wherein said composition enables adhesion between said first layer and said second layer or between said first layer and said third layer, or between said first layer and both said second layer and said third layer. In another embodiment the present invention discloses a method for improving adhesion between layers in an electroactive device comprising the steps of (i) depositing a surface treatment composition comprising at least one adhesion promoter material on at least one surface of a first electroactive layer, and (ii) depositing a second electroactive layer onto the surface of said first layer comprising said adhesion promoter; wherein said composition enables adhesion between said first layer and said second layer of said electroactive device. Electroactive layers and electroactive devices comprising said layers are also disclosed, as well as methods to make said electroactive devices. In another embodiment adhesion promoters comprising 9,9-disubstituted fluorenyl compounds are disclosed, as well as methods for making the same.
摘要:
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 phosphonium salt. In certain embodiments, the organic phosphonium salt has structure (I) wherein R1-R4 are independently at each occurrence a C1-C20 aliphatic radical, a C3-C20 cycloaliphatic radical, or a C3-C20 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.
摘要:
An electrooptic device and a surface modified electrode comprising a reduced organic material are provided. The reduced organic materials lower the work function of an electrode surface; they are also electro-active. These capabilities facilitate their use in production of more efficient electrooptic devices. The electrooptic device has at least a first conductive layer, a second conductive layer, and an electro-active layer comprising the reduced organic material disposed between the first and second conductive layers. The surface modified electrode comprises at least one conductive layer and at least one reduced organic material disposed upon a surface of said conductive layer. Methods for using the organic electro-active material for producing electrooptic devices, and operating the electrooptic devices are also disclosed. Coating compositions and coated articles comprising the reduced organic materials are also provided.