A polymer comprising units α, β, γ and δ wherein: unit α is present at 30 mole % to 60 mole % and is an optionally substituted arylene; unit β is present at 1 mole % to 30 mole % and is a unit comprising an optionally substituted fluorene; unit γ is present at 1 mole % to 40 mole % and comprises aryl substituted nitrogen, or an optionally substituted triazine; unit δ is present at 0.5 mole % to 15 mole % and comprises an iridium complex; and optionally up to 20 mole % of other units if the total of α, β, γ and δ is less than 100 mole %.

This invention relates to the field of energy storage devices, and especially electrochemical energy storage devices where an electroactive moiety is chemically attached to a conductive polymer In particular, the invention relates to the design and fabrication of electrodes for the use in electrochemical storage devices having an electrochemically active conjugate. The electrochemically active conjugate preferably has an electroactive moiety selected from electroactive metal center, an electroactive organic species, or an electroactive non-metal species. Depending on the selected electroactive moiety, it can be attached either directly or through an appropriate linker to the conductive polymer.

A light emitting device contains an anode, cathode, and two organic layers provided therebetween. One organic layer contains a phosphorescent compound, the second organic layer contains a block copolymer containing an end group, a block that binds to the end group and/or a block that does not bind to the end group, and a crosslinked product of the block copolymer. The non-terminal block contains a non-crosslinkable unit represented by the formula (X) and/or a non-crosslinkable unit represented by the formula (Z). At least one of X.sub.I>X.sub.II; Z.sub.I>Z.sub.II; X.sub.I+Z.sub.I>X.sub.II+Z.sub.II is satisfied when the total number of units having formula (X) and the total number of units having formula (Z) in the non-terminal block are X.sub.I and Z.sub.I, respectively, and the total number of units having formula (X) and the total number of units having formula (Z) in the terminal block are X.sub.II and Z.sub.II, respectively.

A block copolymer includes an end group, a block that binds to the end group, and a block that does not bind to the end group. The block that does not bind to the end group contains at least one non-crosslinkable constitutional unit represented by the formula (X) and/or at least one non-crosslinkable constitutional unit represented by the formula (Z). At least one of formulas (i) X.sub.I>X.sub.II, (ii) Z.sub.I>Z.sub.II and (iii) X.sub.I+Z.sub.I>X.sub.II+Z.sub.II is satisfied when the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that does not bind to the end group are represented by X.sub.I and Z.sub.I, respectively, and the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that binds to the end group are represented by X.sub.II and Z.sub.II, respectively.

A curable composition comprises an addition polymerizable cycloolefin comprising a ring containing a single car-bon-carbon double bond; an addition polymerization catalyst; and at least one of hollow glass microspheres, expanded polymeric mi-crospheres, or expandable polymeric microspheres. The curable composition may be 1-part or 2-part. Methods of curing the curable composition are disclosed. Cured compositions, and articles including the same are also disclosed.

The present disclosure provides a semiconductor compound, which includes a metal complex unit and a conjugate unit. The metal complex unit includes a coordination center and a plurality of ligands. The coordination center is a metal ion or a metal atom, and the ligands are linked with the coordination center. The conjugate unit is linked with the metal complex unit by covalent bond.

A block copolymer includes an end group, a block that binds to the end group, and a block that does not bind to the end group. The block that does not bind to the end group contains at least one non-crosslinkable constitutional unit represented by the formula (X) and/or at least one non-crosslinkable constitutional unit represented by the formula (Z). At least one of formulas (i) X.sub.I>X.sub.II, (ii) Z.sub.I>Z.sub.II and (iii) X.sub.I+Z.sub.I>X.sub.II+Z.sub.II is satisfied when the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that does not bind to the end group are represented by X.sub.I and Z.sub.I, respectively, and the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that binds to the end group are represented by X.sub.II and Z.sub.II, respectively.

Four conjugated copolymers with a donor/acceptor architecture including 4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b]dithiophene as the donor structural unit and benzo[2,1,3]thiodiazole fragments with varying degrees of fluorination have been synthesized and characterized. It has been shown that the HOMO levels were decreased after the fluorine substitution. The field-effect charge carrier mobility was similar for all polymers with less than an order of magnitude difference between different acceptor units.

A polymeric light emitting substance having a polystyrene reduced number-average molecular weight of from 10.sup.3 to 10.sup.8 wherein this light emitting substance has in the main chain or side chain a metal complex structure showing light emission from the triplet excited state, and the substance can form a light emitting layer by industrially simple application methods such as a spin coat method, inkjet method, printing method and the like.

Four conjugated copolymers with a donor/acceptor architecture comprising 4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b]dithiophene as the donor structural unit and benzo[2,1,3]thiodiazole fragments with varying degrees of fluorination have been synthesized and characterized. It has been shown that the HOMO levels were decreased after the fluorine substitution. The field-effect charge carrier mobility was similar for all polymers with less than an order of magnitude difference between different acceptor units. Methods of increasing yield of the copolymers, controlling molecular weight of the copolymers, and endcapping the copolymers are also described.