Methods for deposition of elemental metal films on surfaces using metal coordination complexes comprising nitrogen-containing ligands are provided. Also provided are nitrogen-containing ligands useful in the methods of the invention and metal coordination complexes comprising these ligands.

Metal coordination complexes comprising an iridium atom coordinated to at least one diazabutadiene based ligand having a structure represented by: ##STR00001##
where R1 and R4 are independently selected from the group consisting of C1-C4 alkyl and amino groups, and each of R2 and R3 are independently selected from the group consisting of H, C1-C3 alkyl, or amino groups are described. Processing methods using the metal coordination complexes are also described.

A formic acid decomposition catalyst system includes organometallic complexes having formula 1: ##STR00001## wherein: M is a transition metal; E is P, N, or C (as in imidazolium carbene); R.sub.1, R.sub.2 are independently C.sub.1-6 alkyl groups; o is 1, 2, 3, or 4; R.sub.3 are independently hydrogen, C.sub.1-6 alkyl groups, OR.sub.14, NO.sub.2, halogen; R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11, R.sub.12, R.sub.13, R.sub.15, R.sub.16 are independently hydrogen or C.sub.1-6 alkyl groups; R.sub.14 is a C.sub.1-6 alkyl group; and X.sup. is a negatively charge counter ion.

A condensed cyclic compound represented by Formula 1:

Ar.sub.1-L.sub.1-Ar.sub.2Formula 1 wherein, in Formula 1, Ar.sub.1, Ar.sub.2, and L are the same as described in the specification.

A 1, 4 bidentate ligand comprising first and second ligand centres, wherein the first ligand centre is an sp.sup.2-hybridised carbon or a nitrogen atom; wherein the second ligand centre is a nitrogen atom in a five- or six-membered aromatic or hetero-aromatic ring, said ring having a substantially linear substituent T.sup.1 meta or para to the nitrogen atom; wherein T.sup.1 has the formula 1:

Ar.sup.1.sub.aY.sup.1.sub.bAr.sup.2[Y.sup.2.sub.cAr.sup.2].sub.dSB(1) and wherein T.sup.1 is attached to the ring by X.sup.1, wherein X.sup.1 is a bond, a methylene group, a substituted methylene group, an oxygen atom or a sulphur atom, wherein each Ar.sup.1 and Ar.sup.2 are independently selected from the group of C.sub.6 to C.sub.20 aromatic and C.sub.4 to C.sub.20 heteroaromatic groups, wherein Y.sup.1 and each Y.sup.2 is independently an optionally substituted C.sub.2 or acetonitrile trans double-bond linking moiety, wherein a is 0, 1, 2 or 3, wherein b is 0, 1 or 2, wherein each c is independently 0, 1 or 2, wherein d is 0, 1, 2, 3 or 4, S is a flexible spacer, and B represents a moiety having one or more cross-linkable functionalities. Network polymers, complexes, compositions, and devices based on this ligand. Method for forming devices based on this ligand.

Provided are an organometallic compound, an organic light-emitting device including the organometallic compound, and an organic light-emitting apparatus including the organic light-emitting device. The organometallic compound has the structure M(L.sub.1).sub.n1(L.sub.2).sub.n2, wherein M is a transition metal, L1 is a ligand represented by the following structure:

##STR00001##

wherein n1 is 1, 2, or 3, and when n1 is two or more, two or more L.sub.1(s) are identical to or different from each other, L.sub.2 is an organic ligand, and n2 is 0, 1, or 2, and when n2 is two or more, two or more L.sub.2(s) are identical to or different from each other. The sum of n1 and n2 is 2 or 3. More details about Formula 2 is provided in the disclosure.

Methods for deposition of elemental metal films on surfaces using metal coordination complexes comprising nitrogen-containing ligands are provided. Also provided are nitrogen-containing ligands useful in the methods of the invention and metal coordination complexes comprising these ligands.

The present invention provides biologically active compounds and methods to obtain biologically active compounds that can be used as photosensitizers for diagnostic and therapeutic applications, particularly for PDT of cancer, infections and other hyperproliferative diseases, fluorescence diagnosis and PDT treatment of non-tumorous indications such as arthritis, inflammatory diseases, viral or bacterial infections, dermatological, ophthalmological or urological disorders. As the compounds exhibit also toxicity against targets (tumor cells, bacteria, inflammation-related cells) without light these biologically active compounds may also be used for the light-independent treatment of such indications. Preferred embodiments of the present invention consist of methods to synthesize metal or half-metal complex structures incorporating one or more substituted 2,3,5,6-tetrafluorophenyl-dipyrromethene (2,3,5,6-tetrafluorophenyldipyrrin) units. These dipyrromethenes (dipyrrins) can carry a variety of different substituents in the 4-position enabling a fine tuning of their biological or amphiphilic/hydrophilic properties. Another object of the present invention is to provide amphiphilic compounds with a higher membrane affinity and increased efficacy.

A formic acid decomposition catalyst system includes organometallic complexes having formula 1:

##STR00001## wherein: M is a transition metal; E is P, N, or C (as in imidazolium carbene); R.sub.1, R.sub.2 are independently C.sub.1-6 alkyl groups; o is 1, 2, 3, or 4; R.sub.3 are independently hydrogen, C.sub.1-6 alkyl groups, OR.sub.14, NO.sub.2, halogen; R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11, R.sub.12, R.sub.13, R.sub.15, R.sub.16 are independently hydrogen or C.sub.1-6 alkyl groups; R.sub.14 is a C.sub.1-6 alkyl group; and X.sup. is a negatively charge counter ion.

Provided is a method for producing a halogen-crosslinked iridium dimer, including reacting an iridium compound represented by the general formula (1) with an aromatic bidentate ligand in a solvent to produce a halogen-crosslinked iridium dimer, the solvent having a boiling point of 50 C. or higher and lower than 350 C., the reaction being carried out at a reaction temperature of 50 C. or higher and lower than 300 C., and the aromatic bidentate ligand being added in an amount of 0.5 times or more and less than 10 times the molar amount of the iridium compound. The halogen-crosslinked iridium dimer is usable as a precursor of a cyclometalated iridium complex useful as a phosphorescent material.

##STR00001##