The paper focuses on exploiting aurophilic bonding to produce white light emitting materials. Inorganic Click (iClick) is employed to link two or four Au­(I) metal ions through a triazolate bridge. Depending on the choice of phosphine ligand (PEt3 or PPh3), dinuclear Au2-FO or tetranuclear Au4-FO complexes can be controllably synthesized (FO = 2-(9,9-dioctylfluoreneyl-)). The iClick products Au2-FO and Au4-FO are characterized by combustion analysis and multinuclear NMR, TOCSY 1D, 1H–13C gHMBC, and 1H–13C gHSQC. In addition, the photophysical properties of Au2-FO and Au4-FO were examined in THF solution. Transient absorption spectroscopy was employed to elucidate the excited state features of the gold compounds. Solution processed OLEDs were fabricated and characterized, which gave white light electroluminescence with CIE coordinates (0.34, 0.36), as seen referenced to CIE standard illuminant D65 (0.31, 0.32). TDDFT computational analysis of Au2-FO and Au4-FO reveals the origin of light emission. In the case of Au4-FO, direct excitation leads to increased aurophilic bonding in the excited state, and as a result the emission profile is broadened to cover a larger region of the visible spectrum, thus giving white light emission. Designing molecules that can access or increase aurophilic bonding in the excited state provides another tool for fine-tuning the emission profiles of gold complexes.

This report describes the iClick synthesis and characterization of a metallopolymer that contains contiguous conjugation across the polymer repeat units and Pt(II) ions. A bifunctional A−Pt-B monomer, where A = azido and B = acetylide, was synthesized. Using a Cu(I) source, the A−Pt-B monomer was polymerized via azide−alkyne cycloaddition to give a low-molecular-weight metallopolymer. Photophysical interrogation and computation modeling of the metallopolymer indicates limited conjugation and the spectra are dominated by ligand-centered transitions and emission.

a b s t r a c tThe iClick (inorganic click) reactions between gold-acetylides and group 9 transition metal-azide complexes are presented. Complexes [Rh(CO)(PPh 3 ) 2 ][PPh 3 Au](3 (5). Complexes 3, 4, and 6 have been characterized by a combination of NMR spectroscopies, crystallography and combustion analysis.Published by Elsevier Ltd.

The first example of an in-chain metallo-poly(triazolate) synthesized by CuAAC is reported. Azido-platinum-acetylide (A-M-B) monomers are catalytically polymerized with copper(i) acetate to yield 1,2,3-triazolate linked Pt(ii) units. The metallopolymers are characterized by multinuclear NMR, IR, UV/Vis, GPC, and MS.

Concepts from organometallic chemistry are used to define possibilities of cyanide as a docking unit for bioassembly processes.

This report focuses on Cu­(I) catalyzed cycloaddition reactions between organic azides and the platinum diacetylide complexes trans-(PR3)2Pt­(CCR′)2 (where PR3 = P­(OEt)3, PEt3, P n Bu3, PPhMe2, PPh3, and PBn3; and R′ = H, Ph, and p-PhNO2). Pt­(II)-Diacetylides supported by P­(OEt)3, PEt3, P n Bu3, and PPhMe2 react with benzyl azide to provide syn/anti isomers of double cycloaddition products. In contrast, Pt­(II)-diacetylide complexes supported by PPh3 and PBn3 afford single cycloaddition products, exclusively. Steric congestion enforced by the larger phosphines PPh3 and PBn3 prevent the second cycloaddition. Ground state DFT computations provide some insight into the divergent reactivity and indicate that the π-acidity of the phosphine ligands is a variable in the single vs double cycloaddition outcome.