The present invention relates to compounds of the formula (I) and to the use thereof in organic electronic devices, and to organic electronic devices which comprise compounds of the formula (I), preferably as hole-transport materials and/or as matrix materials, in particular in combination with a further matrix material.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts on basis of benzotriazoles, which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts of formula

##STR00001##

which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.

Described are a compound of formula (II) or (III):

##STR00001##

The compounds are effective in the treatment of disease, including a tauopathy condition or a disease of tau protein aggregation.

Described are a compound of formula (II) or (III): ##STR00001## The compounds are effective in the treatment of disease, including a tauopathy condition or a disease of tau protein aggregation.

The present invention describes indenocarbazole derivatives having electron- and hole-transporting properties, in particular for use in the emission and/or charge-transport layer of electroluminescent devices or as matrix material. The invention furthermore relates to a process for the preparation of the compounds according to the invention and to electronic devices comprising same. ##STR00001##

The present invention describes indenocarbazole derivatives having electron- and hole-transporting properties, in particular for use in the emission and/or charge-transport layer of electroluminescent devices or as matrix material. The invention furthermore relates to a process for the preparation of the compounds according to the invention and to electronic devices comprising same. ##STR00001##

This disclosure provides compositions of electrochromic dyes, functionalized electrochromic dyes and dye macromers which may be incorporated into electrochromic devices with tailored optical properties. The disclosure provides an electrochromic dye with an attached functionalization group wherein the said dye colors by at least one of oxidation and reduction and contains at least two moieties wherein a first moiety is electrochromic and a second moiety is an electrochromic moiety, an electron donating moiety, or an electron receiving moiety and wherein the functionalization group. This disclosure also provides EC compositions and devices for controlling color.

This disclosure provides compositions of electrochromic dyes, functionalized electrochromic dyes and dye macromers which may be incorporated into electrochromic devices with tailored optical properties. The disclosure provides an electrochromic dye with an attached functionalization group wherein the said dye colors by at least one of oxidation and reduction and contains at least two moieties wherein a first moiety is electrochromic and a second moiety is an electrochromic moiety, an electron donating moiety, or an electron receiving moiety and wherein the functionalization group. This disclosure also provides EC compositions and devices for controlling color.

The present invention relates to organic light emitting elements, comprising thermally activated delayed fluorescence (TADF) emitters and/or hosts of formula ##STR00001##
which have a sufficiently small energy gap between S.sub.1 and T.sub.1 (E.sub.ST) to enable up-conversion of the triplet exciton from T.sub.1 to S.sub.1. The organic light emitting elements show high electroluminescent efficiency.