Abstract: A series of highly luminescent cyclometalated rhodium(III) complexes, with photoluminescence quantum yields up to 0.65 in thin films, have been designed and prepared. The strong luminescence property is realized by the judicious choice of a strong ?-donor cyclometalating ligand with lower-lying intraligand state and the ability to raise the d-d excited state. This is the first report to demonstrate the capability of rhodium(III) complexes as high efficient light-emitting materials for organic light-emitting devices. Compelling external quantum efficiencies of up to 12.2% and operational half-lifetime of over 3,000 hours have been achieved.

Abstract: Through the use of a rhodamine appended chelate, a versatile strategy has been demonstrated to generate mitochondria-targeting photosensitizers via the incorporation of variety of luminescent transition metal systems. The generation of triplet excited state of rhodamine moiety endows the complexes with mitochondria-targeting photosensitizing ability to form singlet oxygen (1O2) for use as photodynamic therapy (PDT) agent. The combination of rhodamine organic dye and luminescent transition metal centers in such hybrid systems exhibits the synergistic merits, including low dark cytotoxicity, selective tumor cell uptake, high molar absorptivity for low-energy excitation in the visible region, and high photostability.

Abstract: The synthesis and characterization of a platinum (II) terpyridine system tethered with a latent organic dye of rhodamine derivative as colorimetric and fluorescent sensory moiety has been reported to show selective Hg2+ ion sensing behavior. The interplay of aggregation/de-aggregation behavior of the alkynylplatinum(II) terpyridine complex and the ring-opening process of rhodamine derivative has been investigated. The spectral change of aggregation NIR emission at 800 nm and rhodamine fluorescence at 585 nm provides a possible ratiometric luminescence measurement. Morphological studies from TEM and SEM images showing nanospherical structures confirmed the aggregation in the absence of Hg2+ ion.

Abstract: Through the use of a rhodamine appended chelate, a versatile strategy has been demonstrated to generate mitochondria-targeting photosensitizers via the incorporation of variety of luminescent transition metal systems. The generation of triplet excited state of rhodamine moiety endows the complexes with mitochondria-targeting photosensitizing ability to form singlet oxygen (1O2) for use as photodynamic therapy (PDT) agent. The combination of rhodamine organic dye and luminescent transition metal centers in such hybrid systems exhibits the synergistic merits, including low dark cytotoxicity, selective tumor cell uptake, high molar absorptivity for low-energy excitation in the visible region, and high photostability.

Abstract: A novel class of saturated or conjugated dendrimers containing at least one strong ?-donating group coordinated to cyclometalated tridentate gold(III) compounds having the chemical structure depicted by generic formula: wherein: (a) [Au] is a cyclometalated tridentate gold(III) group; (b) Unit A is a ?-donating chemical group; (c) Unit B is a central part of the dendrons comprising a branch point of component dendrimers; (d) Unit C is optional surface groups or dendrons of the dendrimers; (e) n=0 or 1.

Abstract: In one embodiment, the present invention provides a class of luminescent gold(III) compounds containing a tridentate ligand with one strong ?-donating group. The present invention also provides methods for synthesizing these compounds, as well as uses of these compounds as electrophosphorescent materials in phosphorescent organic light-emitting devices (OLEDs) to provide electroluminescence (EL).

Abstract: A novel class of saturated or conjugated dendrimers containing at least one strong ?-donating group coordinated to cyclometalated tridentate gold(III) compounds having the chemical structure depicted by generic formula: wherein: (a) [Au] is a cyclometalated tridentate gold(III) group; (b) Unit A is a ?-donating chemical group; (c) Unit B is a central part of the dendrons comprising a branch point of component dendrimers; (d) Unit C is optional surface groups or dendrons of the dendrimers; (e) n=0 or 1.

Abstract: A class of luminescent gold(III) compounds containing a tridentate ligand with one strong ?-donating group having the chemical structure depicted by generic formula (I): wherein: (a) X is selected from nitrogen; (b) Y and Z selected from carbon; (c) A is cyclic structure derivative of pyridine group; (d) B and C are cyclic structure derivative of phenyl groups; (e) R1 is an optionally substituted carbon donor ligand attached to the gold atom; (f) n is zero, a positive integer or a negative integer.

Abstract: Embodiments of the invention are directed to luminescent gold(III) compounds contains a bidentate ligand with at least one strong ?-donating group, a method of preparation of these compounds and the use of these compounds in organic light emitting devices. The gold(III) compounds have the chemical structure: wherein: X is a nitrogen atom; Y is selected from a carbon or a nitrogen atom; A-B is a substituted or unsubstituted cyclometalating ligand (for Y?C) or diimine ligand (for Y?N); where A and B are cyclic structure derivatives; R1 and R2 are optionally substituted carbon donor ligands attached to the gold atom, with the proviso that R1 and R2 are not —CH3, —CH2SiMe3, mesityl, pentafluorophenyl, —CH2C(O)R?, —CH(R)SO2CH(R)—, —C6H4N?NC6H5, and wherein R1 and R2 can optionally be combined into a bidentate ligand; and n is greater or equal to zero.

Abstract: The present invention provides a composition for detecting and/or characterizing a multiple-charged biomolecule comprising a charged d8 or d10 metal complex, wherein the metal complex electrostatically binds to the multiple-charged biomolecule to induce aggregation and self-assembly of the metal complex through metal-metal interactions, ? . . . ? interactions, or a combination of both interactions. The present invention further provides assay methods and kits for label-free optical detection and/or characterization of biomolecules carrying multiple charges, e.g., single-stranded nucleic acids, using a composition comprising a charged d8 or d10 metal complex.

Abstract: The present invention provides a composition for detecting and/or characterizing a multiple-charged biomolecule comprising a charged d8 or d10 metal complex, wherein the metal complex electrostatically binds to the multiple-charged biomolecule to induce aggregation and self-assembly of the metal complex through metal . . . metal interactions, ? . . . ? interactions, or a combination of both interactions. The present invention further provides assay methods and kits for label-free optical detection and/or characterization of biomolecules carrying multiple charges, e.g., single-stranded nucleic acids, polyaspartate, polyglutamate, using a composition comprising a charged d8 or d10 metal complex.

Abstract: Embodiments of the invention are directed to luminescent gold(III) compounds contains a bidentate ligand with at least one strong ?-donating group, a method of preparation of these compounds and the use of these compounds in organic light emitting devices. The gold(III) compounds have the chemical structure: wherein: X is a nitrogen atom; Y is selected from a carbon or a nitrogen atom; A-B is a substituted or unsubstituted cyclometalating ligand (for Y?C) or diimine ligand (for Y?N); where A and B are cyclic structure derivatives; R1 and R2 are optionally substituted carbon donor ligands attached to the gold atom, with the proviso that R1 and R2 are not —CH3, —CH2SiMe3, mesityl, pentafluorophenyl, —CH2C(O)R?, —CH(R)SO2CH(R)—, —C6H4N?NC6H5, and wherein R1 and R2 can optionally be combined into a bidentate ligand; and n is greater or equal to zero.

Abstract: A class of luminescent gold(III) compounds containing a tridentate ligand with one strong ?-donating group having the chemical structure depicted by generic formula (I): wherein: (a) X is selected from nitrogen; (b) Y and Z selected from carbon; (c) A is cyclic structure derivative of pyridine group; (d) B and C are cyclic structure derivative of phenyl groups; (e) R1 is an optionally substituted carbon donor ligand attached to the gold atom; (f) n is zero, a positive integer or a negative integer.

Abstract: The present invention provides a composition for detecting and/or characterizing a multiple-charged biomolecule comprising a charged d8 or d10 metal complex, wherein the metal complex electrostatically binds to the multiple-charged biomolecule to induce aggregation and self-assembly of the metal complex through metal-metal interactions, ? . . . ? interactions, or a combination of both interactions. The present invention further provides assay methods and kits for label-free optical detection and/or characterization of biomolecules carrying multiple charges, e.g., single-stranded nucleic acids, using a composition comprising a charged d8 or d10 metal complex.