Compounds and polymers which contain substituted indenofluorene derivatives as structural unit, process for the preparation thereof, and the use thereof as electronic devices and mixtures and solutions

摘要

The present invention relates to polymers which contain substituted indenofluorene derivatives as structural unit, to substituted indenofluorene derivatives, to a process for the preparation of the polymers according to the invention, to mixtures and solutions which comprise the polymers according to the invention, and to the use of the polymers according to the invention in electronic devices, in particular in organic electroluminescent devices, so-called OLEDs (OLED=organic light emitting diode).

主权项

1. A polymer for use as a matrix material in electroluminescent device which consists essentially of a structural unit of the formula (I): where the symbols and indices used have the following meanings: the dashed lines represent, independently of one another, a bond to a further structural unit of the polymer; L1 and L2 represent, independently of one another, or a unit selected from the group consisting of a C1-10-alkylene group, C2-10-alkenylene group, C2-10-alkynylene group and Si1-10-silylene group, where one or more CH2 units is optionally replaced by NR, O or S and one or more SiH2 units is optionally replaced by O; W represents a tetravalent unit selected from the group consisting of C, Si, Ge and a structural element of the following formulae (II) and (III): where D is, identically or differently on each occurrence, a unit selected from the group consisting of CR2, O, S and NR, E and J are each, independently of one another, units selected from the group consisting of CR and N, n is 1, 2 or 3, and m is 0, 1 or 2; where R is a radical selected from the group consisting of H, F and C1-6-alkyl; with the proviso that only one representative from E, D and J is different from CR or CR2; where, in the case where the tetravalent unit W is a unit of the formula (II) or (III), C1 and C3 are bonded to different atoms of the unit W; U, V and V′ represent, independently of one another, a single covalent bond or a divalent unit selected from the group consisting of CR1R2, C═O, NR1, O, SiR1R2, P═O, S and GeR1R2; where R1 and R2 are selected, independently of one another, from the group consisting of H, F, a C1-40-alkyl group, a C2-40-alkenyl group, a C2-40-alkynyl group, an optionally substituted C6-40-aryl group and an optionally substituted 5- to 25-membered heteroaryl group; C1 to C8 each represent a C atom; Ar1 and Ar2 each represent, independently of one another, a 5- to 25-membered, optionally substituted aromatic or heteroaromatic ring system; Ar3, Ar4 and Ar5 represent, independently of one another, an optionally substituted C6-40-aryl group or an optionally substituted 5- to 25-membered heteroaryl group, where C atoms C1 and C2 are part of Ar3, C atoms C3 to C6 are part of Ar4 and C atoms C7 and C8 are part of Ar5.