An at least partly implantable system for injecting a substance into a patient's body. The system comprises at least one flexibly bendable infusion needle with a tip end of each of said at least one infusion needle arranged in at least one first housing for penetrating the first housing's outer wall in at least one penetration area and having the respective other end arranged in at least one second housing, the first and second housings being adapted for implantation inside the patient's body, wherein the at least one second housing is provided for implantation inside the patient's body remote from the at least one first housing and wherein the injection needle is sufficiently long to bridge the distance from the at least one second housing for remote implantation to the at least one first housing and further through the first housing up to the outer wall of the first housing. The system further comprises at least one drive unit adapted for being coupled to the at least one infusion needle and arranged at least for advancing the tip end of the at least one infusion needle so that the at least one infusion needle penetrates with the tip end or ends thereof said at least one first housing's outer wall in said at least one penetration area.

Disclosed is an OLED configuration that although comprises an exciplex that has an emission spectrum that is redder than the emission spectrum of the emitter, the emission from the exciplex is suppressed so that the overall OLED emission spectrum is still dominated by the emission of the emitter.

Triazabutadiene molecules as cleavable cross-linkers adapted to cross-link components with click chemistry, e.g., clickable triazabutadienes. For example, in some embodiments, the triazabutadienes feature alkyne handles attached to the imidazole portion or the aryl portion of the triazabutadienes, wherein the alkyne handles can link to azide handles (e.g., azide handles disposed on other components) via click chemistry. Also described are methods of producing said clickable triazabutadienes and methods of use of said clickable triazabutadienes. The present invention also features methods of cleaving said clickable triazabutadienes, e.g., for liberating the diazonium species for further chemical reactions.

The present subject matter relates to a fluorescent compound having aggregation-induced emission (AIE) characteristics. The compound can undergo spontaneous hierarchical self-assembly from a vesicle to a helical fiber in the aggregate state. A composition capable of providing circularly polarized luminescence can include the fluorescent compound and at least one additional compound selected from the group consisting of an aggregation-caused quenching luminogen and an aggregation-induced emission luminogen.

A compound of formula Ir(L.sub.A).sub.m(L.sub.B).sub.n is provided, where m and n are 1 or 2, and m + n = 3; where ligand L.sub.A has a structure of Formula I,

##STR00001##

; ligand L.sub.B has a structure of Formula II,

##STR00002##

and L.sub.A and L.sub.B are different. In Formulae I and II, moiety E is a ring or polycyclic fused ring system; each of X.sup.1 to X.sup.10 is C or N; Y is a linking group that forms a 5-membered ring; each R*, R′, R″, R.sup.A, R.sup.B, R.sup.C, R.sup.D, and R.sup.F is hydrogen or a General Substituent; R.sup.E is hydrogen or a General Substituent other than silyl; and R.sup.E and at least one of R.sup.A or R.sup.B comprise aliphatic carbon atoms. Formulations, OLEDs, and consumer products containing the compound are also provide.

A compound comprising a ligand L.sub.A coordinated to a metal M ##STR00001## wherein ring A, ring T, and ring W are independently selected from a 5-membered or 6-membered heterocyclic or carbocyclic ring, and the ring W is fused to the ring T. The metal compounds having a ligand L.sub.A can be found in an OLED that includes an organic layer positioned between an anode and a cathode where the organic layer comprises a metal compound above having a ligand L.sub.A disclosed herein. We also describe a consumer product comprising the OLED.

An organometallic compound represented by Formula 1:

M(L.sub.1).sub.n1(L.sub.2).sub.n2  Formula 1

In Formula 1, M is a transition metal; L.sub.1 is a ligand represented by Formula 2 as disclosed herein; L.sub.2 is a monodentate ligand, a bidentate ligand, a tridentate ligand, or a tetradentate ligand; n1 is 1, 2, or 3, wherein, when n1 is 2 or greater, ligands L.sub.1 are identical to or different from each other; and n2 is 0, 1, 2, 3, or 4, wherein, when n2 is 2 or greater, ligands L.sub.2 are identical to or different from each other.

A dual host system for OLEDs that contains hole-transporting indolocarbazole and electron-transporting indolocarbazole exhibiting superior performance in the OLEDs is disclosed.

A heteroleptic compound of formula Ir(L.sub.A).sub.m(L.sub.B).sub.n(L.sub.C).sub.p is provided wherein L.sub.A has a structure of Formula IA,

##STR00001##

or Formula IB,

##STR00002##

L.sub.B has a structure of Formula II,

##STR00003##

and L.sub.C is a bidentate ligand; and wherein m is 1 or 2; n is 1 or 2; and p is 0 or 1; and m+n+p=3In Formulae I and II, moieties A and D are heterocyclic ring or a polycyclic ring system; each of X.sup.1 to X.sup.12 is C or N; Ring B is connected to moiety A by a C; at least one of X.sup.9 to X.sup.12 is N; Y is a linking group that forms a 5-membered ring; each R, R′, R″, R.sup.A, R.sup.B, R.sup.C, R.sup.D, and R.sup.E is hydrogen or a General Substituent as defined herein; L.sub.A forms a 5-membered chelate ring with Ir. Formulations, OLEDs, and consumer products containing the compound are also provided.

A compound of Ir(L.sub.A).sub.m(L.sub.B).sub.3-m, having a structure of Formula I,

##STR00001##

useful as emitters in OLEDs is provided. The variables in Formula I are defined in the present disclosure.