[INORG-15]Heterochiral self-discrimination-driven supramolecular self-assembly of decanuclear gold(I)-sulfido complexes into 2D nanostructures with chiral anions-tuned

Heterochiral self-discrimination between two chiral decanuclear gold(I) enantiomers gives rise to self-assembled 2D nanostructures. The introduction of chiral anions has been shown to tune the morphology of these 2D NCs from rhombic NCs to bilayer strip and quasi-hexagonal nanosheets. The current finding provides an important alternative towards the easy fabrication of regular geometric 2D nanostructures based on polynuclear gold(I) complexes.

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[INORG-14]Concentration- and solvation-induced reversible structural transformation and assembly of polynuclear gold(I) sulfido complexes

Concentration-dependent reversible cluster-to-cluster transformation between a dodecanuclear gold(I) sulfido complex (LMe-Au12) and a hexanuclear gold(I) sulfido complex (LMe-Au6) has been observed. This represents the first example of the reversible transformation between two clusters simply by changing the concentration of the gold(I) sulfido complex under mild conditions. The occurrence of the interconversion has provided a system for the study and understanding of supramolecular transformations in polynuclear gold(I) systems under the application of external stimuli.

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[INORG-12]Supramolecular assembly of bent dinuclear amphiphilic alkynylplatinum(II) terpyridine complexes: diverse nanostructures through subtle tuning of the mode of

A new class of bent amphiphilic alkynylplatinum(II) terpyridine complexes was found to adopt different modes of molecular stacking to give diverse nanostructures. In chlorinated solvents, the complexes aggregate in the presence of water droplets and assist in the formation of porous networks, while in DMSO solutions, they self-assemble to give fibrous nanostructures. This class of complexes serve as versatile building blocks to construct orderly packed molecular materials and functional materials in a well-controlled manner.

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[INORG-11]Three-dimensional spirothienoquinoline-based small molecules for organic photovoltaic and organic resistive memory applications

A new spiro structure, namely spirothienoquinoline tBuSAF-Th, has been designed and utilized as a building block to construct functional materials for organic electronic applications. Both the photophysical and electrochemical properties of this class of spirothienoquinoline-based compounds can be fine-tuned by simple and judicious modifications on the molecular backbone. Further exploration of their applications in bulk heterojunction solar cells and organic resistive memory devices by employing this class of compounds as active materials have demonstrated their potentials in organic electronics.

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[INORG-10]Bismuth citrate as metal-organic framework for drug delivery

Anti-ulcer drug colloidal bismuth subcitrate (CBS) has a three-dimensional framework which shows diverse structures with different cations. In this study, CBS is proposed to be a drug carrying metal-organic framework (MOF). We elucidate the MOF concept by co-crystallization of CBS with cationic spermidine. Our crystallography data reveal the co-crystallization in two types of crystals with various pore sizes. It is found that spermidine acting as a guest molecule, can be diffused into the MOF structure and docked inside the channel via electrostatic interactions. We also demonstrate that CBS can carry small molecules such as metformin and isoniazid.

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[INORG-09]Photochromic barbiturate pendant-containing benzo[b]phosphole oxides with co-assembly property and photoinduced morphological changes

A series of novel barbiturate pendant-containing benzo[b]phosphole oxides has been demonstrated to exhibit photochromic and co-assembly properties. Both the open form and the photogenerated closed form of diarylethene-based benzo[b]phosphole oxides have displayed color changes upon addition of H-bonding ditopic receptor with formation of the supramolecular polymer. Moreover, both the unassembled and co-assembled states of the benzo[b]phosphole oxide have exhibited photoinduced coloration. Multiaddressable states of co-assembly mixture with multiple colors have been achieved via the combination of photochromism and thermochromism. More interestingly, photoinduced morphological changes from extensive porous network structures to ring-like aggregates have been observed for the co-assembly upon photoirradiation.

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[INORG-08]Solution-processable cyclometallated gold(III) complexes for high brightness phosphorescent white organic light-emitting devices

Two gold(III) complexes, Au-Y and Au-wY, have been tailor-made and utilized as emitters for solution-processed white organic light-emitting devices (WOLEDs). WOLEDs demonstrating high brightness of up to 10,000 cd m–2 and small efficiency roll-offs of less than 4% have been realized, which is anticipated to be due to the short-lived emission lifetime of <1 µs in both gold(III) complexes and a better carrier charge balance within the emitting layer.

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[INORG-07]Protamine-induced supramolecular self-assembly of red-emissive alkynylplatinum(II) 2,6-bis(benzimidazol-2′-yl)pyridine complex for selective label-free sensing of heparin and real-time monitoring of trypsin activity

A label-free detection assay for protamine is developed based on the supramolecular self-assembly of a new anionic alkynylplatinum(II) 2,6-bis(benzimidazol-2-yl)pyridine complex with the aid of electrostatic interaction and non-covalent metal–metal and π–π stacking interactions. This ensemble can also probe heparin by modulation of the self-assembly properties of platinum(II) complexes. In addition, the reported assay has been demonstrated to be a sensitive and selective detection method for trypsin as well as trypsin inhibitor screening, which is essential for drug discovery.

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