Disclosed herein are metal complexes that exhibit multiple radiative decay mechanisms, together with methods for the preparation and use thereof.

Disclosed herein are metal complexes that exhibit multiple radiative decay mechanisms, together with methods for the preparation and use thereof.

A highly rigid tetradentate ligand is combined with a gold(III) ion as a thermally stable tetradentate gold(III) complex. The tetradentate gold(III) complex is a tetradentate gold(III) compound that can be used as a light-emitting material which can be used for fabricated of light-emitting devices such as an organic light-emitting diode (OLED). The tetradentate gold(III) compound can be deposited as a layer or a component of a layer using a solution-process or a vacuum deposition process. The luminescent tetradentate gold(III) compounds are robust and can provide electroluminescence (EL) with a high efficiency and brightness.

A highly rigid tetradentate ligand is combined with a gold(III) ion as a thermally stable tetradentate gold(III) complex. The tetradentate gold(III) complex is a tetradentate gold(III) compound that can be used as a light-emitting material which can be used for fabricated of light-emitting devices such as an organic light-emitting diode (OLED). The tetradentate gold(III) compound can be deposited as a layer or a component of a layer using a solution-process or a vacuum deposition process. The luminescent tetradentate gold(III) compounds are robust and can provide electroluminescence (EL) with a high efficiency and brightness.

The phosphine transition metal complex of the present invention is represented by formula (1).

##STR00001##

Preferably, R.sup.1 and R.sup.6 are identical groups, R.sup.2 and R.sup.7 are identical groups, R.sup.3 and R.sup.8 are identical groups, R.sup.4 and R.sup.9 are identical groups, R.sup.5 and R.sup.10 are identical groups, and n and y are identical numbers. The phosphine transition metal complex is suitably obtained by reacting a phosphine derivative represented by formula (2) and a phosphine derivative represented by formula (3) with a salt of a transition metal of gold, copper or silver.

##STR00002##

See the description for the meanings of the symbols in each formula.

A gold(III) complex, a conjugate of the gold(iII) complex, a pharmaceutical composition comprising the gold(III) complex and uses and a process for preparing the gold(III) complex. The complex comprises a group of (ŜC)-cyclometallated gold(III) complexes containing a 1,1-dithio ligand, which exhibit antibacterial activity against multiresistant microorganisms or against biofilm activity or biofilm disruption. The gold(III) complex has efficacy against a variety of microorganisms and low toxicity.

Metal complexes that exhibit multiple radiative decay mechanisms, together with methods for the preparation and use thereof.

Metal complexes that exhibit multiple radiative decay mechanisms, together with methods for the preparation and use thereof.

Platinum, palladium, and gold complexes suitable for use as phosphorescent emitters or as delayed fluorescent and phosphorescent emitters having one of the following structures:

##STR00001## ##STR00002## ##STR00003##

Platinum, palladium, and gold complexes suitable for use as phosphorescent emitters or as delayed fluorescent and phosphorescent emitters having one of the following structures:

##STR00001## ##STR00002## ##STR00003##