An amine derivative represented by the following General Formula (1) is provided. ##STR00001##
In the above General Formula (1), Ar1, Ar2 and Ar3 are independently a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group, at least one of Ar1, Ar2 and Ar3 is substituted with a substituted or unsubstituted silyl group, and L is a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group.

Novel branched oligoarylsilanes of general formula (I) ##STR00001##
A method of preparation of branched oligoarylsilanes is that a compound of general formula (III)
Y-Q.sub.k-SiAr.sub.n—R).sub.3  (III),
where Y stands for a residue of boronic acid or its ester or Br or I, reacts under Suzuki conditions with a reagent of general formula (IV)
A-X.sub.m-A  (IV),
where A stands for: Br or I, provided that Y stands for a residue of boronic acid or its ester; or a residue of boronic acid or its ester, provided that Y stands for Br or I. A technical result is preparation of novel compounds, featured by a high luminescence efficiency, efficient intramolecular energy transfer from some molecular fragments to others, and an increased thermal stability.

A compound having the structure of Formula I ##STR00001##
is disclosed, where G.sup.a has the structure ##STR00002##
and G.sup.b has the structure ##STR00003##
In the structure of Formula I, Z is selected from Si and Ge; X.sup.a and X.sup.b are independently selected from the group consisting of O, S, and Se; the Y and Z atoms forming the six-membered rings in Formula I, G.sup.a, and G.sup.b are each independently selected from C or N; each R.sup.1, R.sup.2, R.sup.a1, R.sup.a2, R.sup.b1, and R.sup.b2 is independently selected from a variety of substituents; at least one R.sup.a1 is L.sup.a-A.sup.a; at least one R.sup.b1 is L.sup.b-A.sup.b; A.sup.a and A.sup.b are each independently selected from carbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, triphenylene, and nitrogen-substituted variants thereof, which are optionally further substituted; and L.sup.a and L.sup.b are each independently an organic linker. Formulations and devices, such as an OLEDs, that include the compound of Formula I are also described.

The present invention is directed to compositions for silylating organic substrates containing C—H or O—H bonds, especially heteroaromatic substrates. The compositions are derived from the preconditioning of mixtures of hydrosilanes or organodisilanes with bases, including metal hydroxide and metal alkoxide bases. In some embodiments, the preconditioning results in the formation of reactive silicon hydride species.

The present disclosure relates to the field of organic electroluminescence materials and particularly relates to a compound, an OLED display panel and a display device. The compound according to the present disclosure has a structure represented by a formula (I) or a formula (II): ##STR00001##

A silicon-based compound represented by Formula 1 below and an organic light-emitting device including the silicon-based compound are provided. According to one or more embodiments of the present invention, an organic light-emitting device includes: a substrate; a first electrode; a second electrode disposed opposite to the first electrode; and an organic layer disposed between the first electrode and the second electrode and including an emission layer, wherein the organic layer include at least one of the silicon compounds of Formula 1 ##STR00001##

The present invention describes carbazole derivatives formula (1), where the following applies to the symbols used: Y is on each occurrence, identically or differently, CR or N; X is selected from C(R1)2, O, S, PR1, P(═O)R1 or BR1; characterized in that at least one group R is present which stands, identically or differently on each occurrence, for a group of the following formula (2), and/or in that at least one group R1 is present which stands for a group of the following formula (3) or (4), in particular for use as triplet matrix materials in organic electroluminescent devices. The invention furthermore relates to a process for the preparation of the compounds according to the invention and to electronic devices comprising same.

Described herein are molecules for use in organic light emitting diodes. Example molecules comprise at least one moiety A and at least one moiety D. Values and preferred values of the moieties A and D are described herein. The molecules comprise at least one atom selected from Si, Se, Ge, Sn, P, or As.

A polycyclic compound according to an embodiment of the inventive concept is represented by the following Formula 1:

##STR00001##

In Formula 1, Ar.sub.1 and Ar.sub.2 are each independently substituted or unsubstituted aryl group having 6 to 30 carbon atoms for forming a ring, or substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms for forming a ring, where Ar.sub.1 and Ar.sub.2 may combine with each other to form a ring, and A is represented by the following Formula 2-1 or 2-2:

##STR00002##

Provided herein are camptothecin derivatives and pharmaceutical compositions thereof. In other embodiments, provided herein are methods of treatment, prevention, or amelioration of a variety of medical disorders such as, for example, cancer using the compounds and pharmaceutical compositions disclosed herein.