Abstract:
The present invention relates to novel compounds of the formula (I) wherein R1 and R1' independently of each other are H or a substituent, halogen or SiR6R4R5; R2 and R2, may be the same or different and are selected from C1-C25alkyl, C3-C12cycloalkyl, C2-C25alkenyl, C2-C25alkynyl, C4-C25aryl, C5-C25alkylaryl or C5-C25aralkyl, each of which is unsubstituted or substituted, and under conditions as defined in claim 1, R2 and/or R2' may also be halogen or hydrogen; X is a divalent linking group selected from formula (Ia) and formula (Ib); Y and Y' independently are selected from formula (Ic), formula (Id), formula (Ie), formula (If), formula (Ig); n and p independently range from 0 to 6; where further symbols are as defined in claim 1, and to corresponding oligomers and (co)polymers. The compounds according to the invention are useful as semiconductors and have excellent solubility in organic solvents and excellent film-forming properties. In addition, high efficiency of energy conversion, excellent field-effect mobility, good on/off current ratios and/or excellent stability can be observed, when the polymers according to the invention are used in organic field effect transistors, organic photovoltaics (solar cells) and photodiodes.
Abstract:
The present invention relates to polymers comprising one or more (repeating) unit(s) of the formula (I), or a polymer of formula (II), or (III), and their use as organic semiconductor in organic devices, especially in organic photovoltaics (solar cells) and photodiodes, or in a device containing a diode and/or an organic field effect transistor. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high efficiency of energy conversion, excellent field-effect mobility, good on/off current ratios and/or excellent stability can be observed, when the polymers according to the invention are used in organic field effect transistors, organic photovoltaics (solar cells) and photodiodes.
Abstract:
The present invention relates to novel compounds of the formula (I) wherein R1 and R1' independently of each other are H or a substituent, halogen or SiR6R4R5; R2 and R2, may be the same or different and are selected from C1-C25alkyl, C3-C12cycloalkyl, C2-C25alkenyl, C2-C25alkynyl, C4-C25aryl, C5-C25alkylaryl or C5-C25aralkyl, each of which is unsubstituted or substituted, and under conditions as defined in claim 1, R2 and/or R2' may also be halogen or hydrogen; X is a divalent linking group selected from formula (Ia) and formula (Ib); Y and Y' independently are selected from formula (Ic), formula (Id), formula (Ie), formula (If), formula (Ig); n and p independently range from 0 to 6; where further symbols are as defined in claim 1, and to corresponding oligomers and (co)polymers. The compounds according to the invention are useful as semiconductors and have excellent solubility in organic solvents and excellent film-forming properties. In addition, high efficiency of energy conversion, excellent field-effect mobility, good on/off current ratios and/or excellent stability can be observed, when the polymers according to the invention are used in organic field effect transistors, organic photovoltaics (solar cells) and photodiodes.
Abstract:
Novel electrophosphorescent copolymers of the composition [A1]x1, [A2]x2, [A3]x3, [A4]x4, [A5]x5 wherein the structural units A1, A2, A3, A4 and/or A5 are in blocks or at random, and the copolymer is linear or crosslinked, and A1 is an organic radical of a phosphorescent light emitting moiety; A2 is an organic radical providing host functionality; A3 is an organic radical providing electron transport functionality; A4 is an organic radical providing hole transport functionality; A5 is a radical derived from aliphatic or aromatic organic monomers; x1 is a number from 1 to about 1000; x2, x3, x4 and x5 independently are numbers from 0 to about 100 000, with the proviso that the sum (x1 + x2 + x3 + x4 + x5) is at least 5, especially greater than 9; are characterized in that A1 contains a metal benzotriazole complex moiety or A2 is selected from repeating unit(s) of the formulae (III), (IV), where the symbols are as defined in claim 1. The novel copolymers are useful as active materials e.g. in electroluminescent devices.
Abstract:
The present invention relates to novel polymers comprising a repeating unit of the formula (I) and their use in electronic devices. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high charge carrier mobilities and high stability of the emission color can be observed, if the polymers according to the invention are used in organic light emitting diodes (OLEDs).