201 |
Conjugated polymers having spiro centers and their use as
electroluminescence materials |
US541237 |
1995-10-12 |
US5621131A |
1997-04-15 |
Willi Kreuder; Donald Lupo; Josef Salbeck; Hermann Schenk; Thomas Stehlin |
Conjugated polymers comprising recurring units of the formula (I), ##STR1## A, B, C, D are identical or different and are each from one to fifteen identical or different arylene and/or heteroarylene and/or vinylene groups which, like the spirobifluorene skeleton itself, may be unsubstituted or substituted;S are identical or different substituents;m, n are 0 or 1.The polymers of the invention having the formula (I) are suitable as electroluminescence materials and have, in particular, a high color purity of the emission. |
202 |
Rigid rod and ladder polymers and process for making same |
US146266 |
1993-11-01 |
US5599899A |
1997-02-04 |
Samson A. Jenekhe; John A. Osaheni |
A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and ladder polymers are employed in light emitting diodes. |
203 |
Conjugated polymer exciplexes and applications thereof |
US187278 |
1994-01-26 |
US5597890A |
1997-01-28 |
Samson A. Jenekhe |
The present invention is directed to an exciplex formed from a .pi.-conjugated polymer and an electron donor or acceptor component. The present invention also relates to assemblies comprising said exciplex, their use in optoelectrical devices and method of enhancing optoelectrical properties of .pi.-conjugated polymers by forming said exciplex. |
204 |
Rigid-rod polymers |
US289174 |
1994-08-11 |
US5565543A |
1996-10-15 |
Matthew L. Marrocco, III; Robert R. Gagne; Mark S. Trimmer |
High-performance polymers having a rigid-rod backbone comprising a chain length of at least 25 organic monomer units joined together by covalent bonds wherein at least about 95% of the bonds are substantially parallel; and solubilizing organic groups attached to at least 1% of the monomer units. The polymers are prepared in a solvent system which is a solvent for both the monomer starting materials and the rigid-rod polymer product. |
205 |
Polymeric fluorescent substance and organic electroluminescence devices
using the same |
US490609 |
1995-06-07 |
US5543079A |
1996-08-06 |
Toshihiro Ohnishi; Takanobu Noguchi; Shuji Doi |
A polymeric fluorescent substance which is soluble in solvents, has a number average molecular weight of 10.sup.3 to 10.sup.7 and contains, as main constituents, three different repeating units A, B and C selected from various repeating units in specified ratios according to their optical absorption edge wavelengths. |
206 |
Preparation of polycarbynes and diamond-like carbon materials made
therefrom |
US208262 |
1994-03-09 |
US5516884A |
1996-05-14 |
Patricia A. Bianconi |
Synthesis and characterization of polycarbynes, a new class of carbon-based random network polymers. The network backbones of the polymers are composed of tetrahedrally hybridized carbon atoms, each bearing one substituent and linked via three carbon-carbon single bonds into a three-dimensional continuous random network backbone. Silicon, germanium, tin, lead, Group 13 through Group 16 elements, lanthanides, and Group 4 metals can be incorporated into the polymer backbone. The atomic-level carbon network backbone confers unusual properties on the polymers, including thermal decomposition to form diamond or diamond-like carbon. |
207 |
Polymers for electroluminescent devices |
US210327 |
1994-03-18 |
US5514878A |
1996-05-07 |
Andrew B. Holmes; Richard H. Friend; Stephen C. Moratti; Derek R. Baigent; Donald C. Bradley; Raoul Cervini; Neil C. Greenham; Peter J. Hamer |
This invention provides semiconductive conjugated polymers incorporating electron-withdrawing groups for use in electroluminescent devices, methods for their manufacture, and electroluminescent devices incorporating the polymers. The electron-withdrawing group is conjugatively linked to the polymer chain and is selected so that the polymer exhibits electroluminesence upon application of an electric field to a layer thereof. |
208 |
Macromonomers having reactive side groups |
US459366 |
1995-06-02 |
US5496893A |
1996-03-05 |
Robert R. Gagne/ ; Matthew L. Marrocco, III; Mark S. Trimmer; Neil H. Hendricks |
Rigid-rod macromonomers, and methods for preparing such macromonomers, having a polyaromatic backbone, solubilizing side groups, and reactive side groups are provided. The macromonomers are chemically incorporated into polymer systems to provide stronger, stiflened polymers. |
209 |
Optical device incorporating semiconductive conjugated polymer |
US199036 |
1994-02-18 |
US5425125A |
1995-06-13 |
Andrew B. Holmes; Donal D. Bradley; Richard H. Friend; Paul L. Burn; Arno Kraft; Adam R. Brown |
A method is provided for forming in a semiconductive conjugated polymer at least first and second legions having different optical properties. The method comprises: forming a layer of a precursor polymer and permitting the first region to come into contact with a reactant, such as an acid, and heat while permitting the second region to come into contact with a lower concentration of the reactant. The reactant affects the conversion conditions of the precursor polymer in such a way as to control the optical properties of at least the first region so that the optical properties of the first region are different from those of the second region. The precursor polymer may comprise a poly(arylene-1, 2-ethanediyl) polymer, at least some of the ethane groups of which include a modifier group whose susceptibility to elimination is increased in the presence of the reactant. |
210 |
Semiconductive copolymers for use in luminescent devices |
US748777 |
1991-08-22 |
US5401827A |
1995-03-28 |
Andrew Holmes; Donal D. Bradley; Richard H. Friend; Arno Kraft; Paul Burn; Adam Brown |
A semiconductive conjugated copolymer comprises at least two chemically different monomer units which, when existing in their individual homopolymer forms, have different semiconductor bandgaps. The proportion of said at least two chemically different monomer units in the copolymer is selected to control the semiconductor bandgap of the copolymer so as to control the optical properties of the copolymer. The copolymer is formed in a manner enabling it to be laid down as a film without substantially affecting the luminescent characteristics of the copolymer and is stable at operational temperature.The semiconductor bandgap may be spatially modulated so as to increase the quantum efficiency of the copolymer when excited to luminesce, to select the wavelength of radiation omitted during luminescence or to select the refractive index of the copolymer. |
211 |
Resins with high surface areas and porosities |
US614492 |
1990-11-16 |
US5308877A |
1994-05-03 |
Bruce E. Smart; Owen W. Webster |
Organic resins with high surface areas and porosities, which are insoluble in organic solvents and contain few or no flexible groups in the resin structure, are disclosed. Also disclosed is a process for making such resins from polyfunctional aryl alkali metal compounds and a second polyfunctional monomer. Such resins are useful as absorbants. |
212 |
Dialkylidenecyclobutane/bisimide/bisbenzocyclobutene composition |
US889866 |
1992-05-28 |
US5237043A |
1993-08-17 |
Larry S. Corley |
A composition comprising a 1,2-dialkylidenecyclobutane such as 1,2-dimethylenecyclobutane, a bisbenzocyclobutene and a polyimide such as a bismaleimide can be thermally cured to a tough copolymer having a high glass transition temperature. |
213 |
Bis-sulfonium salts of 2,5-dimethylstilbene |
US914684 |
1992-07-14 |
US5210219A |
1993-05-11 |
John Stenger-Smith |
Novel conjugated stilbenylene polymers are disclosed having non-linear optical properties, and which can be converted to electrically conductive polymers. Such polymers are produced by reacting a novel bis-cycloalkylene sulfonium salt of 2,5-dimethyl stilbene, e.g. 2,5-(4'-methoxy)-stilbene dimethylene bis-(tetramethylene sulfonium bromide), with alkali metal hydroxide to form a cycloalkylene sulfonium salt precursor polymer, and then heating the precursor polymer under conditions to produce the stilbenylene vinylene polymer, e.q. poly(2,5-(4'-methoxy) stilbenylene vinylene). |
214 |
Soybean peroxidase treatment of contaminated substances |
US876509 |
1992-04-29 |
US5178762A |
1993-01-12 |
Alexander R. Pokora; Mark A. Johnson |
A method for oxidizing organic and/or heavy metal contaminants in wastewaters, sludges, or soils containing such contaminants by contacting the wastewaters, sludges, or soils with soybean peroxidase and a peroxide. |
215 |
Semi-permeable membranes derived from reactive oligomers |
US759295 |
1991-09-13 |
US5156656A |
1992-10-20 |
Theodore L. Parker; Edgar S. Sanders, Jr. |
The invention releates to semi-permeable gas separation membranes derived from oligomers containing reactive end groups. |
216 |
Dialkylidenecyclobutane/bisimide compositions |
US733947 |
1991-07-22 |
US5147953A |
1992-09-15 |
Larry Steven Corley |
A composition comprising a 1,2-dialkylidenecyclobutane such as 1,2-dimethylenecyclobutane and a polyimide such as a bismaleimide can be thermally cured to a tough copolymer having a high glass transition temperature and low water absorbance. |
217 |
Reaction product of olefinically unsaturated compounds with compounds
containing active hydrogen, processes for their preparation and
2-component lacquers based thereon |
US371517 |
1989-06-26 |
US5084536A |
1992-01-28 |
Gerhard Brindopke; Gerd Walz; Karl Waldmann; Manfred Schon; Hans-Jerg Kleiner |
A 3-component lacquer composed of A) compounds containing at least two R.sup.1 R.sup.2 C.dbd.CR.sup.3 --X groups (I) wherein R.sup.1 denotes hydrogen or a hydrocarbon radical having 1 to 10 carbon atoms, R.sup.2 and R.sup.3 are individually hydrogen, a hydrocarbon radical having 1 to 10 carbon atoms, an ester group containing the radical R.sup.4 of a monohydric alcohol having up to 12 carbon atoms, --CN, --NO.sub.2 or a --CO--NHR.sup.1 or --CO--R.sup.1 group, X is --CO-- which is attached to a further R.sup.1 R.sup.2 C.dbd.CR.sup.3 -- group either directly or via the radical of a polyhydric alcohol or of an amine and B) compounds containing:(a) at least two active H atoms or(b) at least two groups having active H atoms of the type --AH (II) or(c) at least one active H atom and at least one group of the type (II)and A is --CH-- or --NH-- or --S-- and optionally with customary additives and C) at least one catalyst selected from the group consisting of diazabicyclooctane (DABCO), fluorides of quaternary ammonium compounds on their own or as a mixture with alkyl silicates, amidines, tertiary phosphanes of the formula P(CH.sub.2 --Y).sub.3 in which the Ys are identical or different and are --OH, --CH.sub.2 CN or --N(Z).sub.2 in which Z is an alkyl having 1 to 5 carbon atoms, tertiary phosphanes of the formula P(R.sup.4,R.sup.5,R.sup.6) in which R.sup.4, R.sup.5 and R.sup.6 are alkyl of 1 to 12 carbon atoms or a phenyl which is unsubstituted or substituted by at least one alkyl, alkoxy or dialkylamino, each of which has 1 to 4 carbon atoms in the alkyl, and R.sup.4, R.sup.5 and R.sup.6 are identical or different, but at least one of them is phenyl, and aminophosphoranes of the formula (R.sup.7,R.sup.8,R.sup.9) P.dbd.N--C (R.sup.10, R.sup.11,R.sup.12) in which R.sup.7, R.sup.8 and R.sup.9 are identical or different and denote an alkyl having 1 to 12 carbon atoms or a alkoxy or dialkylamino group, each of which has 1 to 4 carbon atoms in the alkyl, and R.sup.10, R.sup.11 and R.sup.12 are identical or different and each represents an alkyl having 1 to 5 carbon atoms or a phenyl. |
218 |
Diamondoid polymeric compositions |
US472530 |
1990-01-30 |
US5019660A |
1991-05-28 |
Orville L. Chapman; D. Duayne Whitehurst |
Polymeric compositions of matter and methods of making the same are disclosed, said polymeric compositions comprising at least one monomer having the structure of one selected from the group consisting of diamantane, triamantane and the higher adamantalogs, said monomer being bonded through at least one double bond extending through a methylene position of said monomer. |
219 |
Condensed polycyclic, polynuclear aromatic thermosetting resin having
good moldability and heat resistance; and preparation thereof |
US398485 |
1989-08-25 |
US5017683A |
1991-05-21 |
Sugio Otani; Michio Tsuyuguchi; Haruyuki Kano; Yoshihisa Sone; Kenji Kageyama; Toshiaki Mabuchi |
A condensed polycyclic, polynuclear aromatic thermosetting resin with improved moldability which is prevented from forming a cloud on a mold during molding is disclosed. The resin is a prepolymer derived by condensation polymerization of a condensed polycyclic aromatic compound or a mixture thereof with a monocyclic aromatic compounds and an aromatic compound having at least two hydroxymethyl groups as a crosslinking agent in the presence of an acid catalyst. The resin has a flow temperature of not higher than 150.degree. C. The acid catalyst is water-insoluble or when it is water-soluble the resin has an insolubilized acid ratio of at least 50%. The resin is useful in the manufacture of thermoset molded articles having good heat resistance and good mechanical and electrical properties. It can be blended with a filler and/or reinforcing agent to form a molding compound. |
220 |
Molecules with enhanced electronic polarizabilities based on
"defect"-like states in conjugated polymers |
US418611 |
1989-10-10 |
US5011907A |
1991-04-30 |
David N. Beratan |
Highly conjugated organic polymers typically have large non-resonant electronic susceptibilities, which give the molecules unusual optical properties. To enhance these properties, "defects" are introduced into the polymer chain. Examples include light doping of the conjugated polymer and synthesis, conjugated polymers which incorporate either electron donating or accepting groups, and conjugated polymers which contains a photoexcitable species capable of reversibly transferring its electron to an acceptor. Such defects in the chain permit enhancement of the second hyperpolarizability by at least an order of magnitude. |