Mechanisms and applications of cyclometalated Pt(ii) complexes in photoredox catalytic trifluoromethylation† †Electronic supplementary information (ESI) available: Experimental details and the syntheses of the Pt(ii) catalysts; Fig. S1–S55, showing the phosphorescence spectra, femto- and nanosecond laser flash photolysis results, cyclic and differential pulse voltammograms, phosphorescence quenching experiment results, photoinduced ESR spectrum, spectroelectrochemical UV-vis-NIR absorption spectrum, dark-state reaction results, and 1H, 13C, and 19F NMR spectra; Scheme S1, presenting the synthetic routes to the Pt(ii) complexes; Tables S1–S6, listing optimization results for the trifluoromethylation of 1-dodecene, 3-methylindole and N-methylpyrrole, and the Cartesian coordinates for the optimized geometries of one-electron oxidized species of the Pt complexes. See DOI: 10.1039/c4sc02537g Click here for additional data file.

Development of a cyclometalated iridium complex with specific intramolecular hydrogen-bonding that acts as a fluorescent marker for the endoplasmic reticulum and causes photoinduced cell death† †Electronic supplementary information (ESI) available: Detailed synthesis; photophysical data (Table S1); pH dependent phosphorescence lifetime of complex C2 (Table S2); crystallographic parameters of C2; selected bond distances and angles of C2 (Table S3); cyclic voltammetric data of complexes C1–C11 (Table S4); 1H NMR spectra of ligands and complexes (Fig. S1 and S3); ESI-MS spectra of ligands and complexes (Fig. S2 and S4); fluorescence spectra of the complexes in acetonitrile and at pH 4, 7 and 9, exponential decay curve of C2 (Fig. S5); pH dependent fluorescence spectrum of complexes C1–C11 (Fig. S6); DIC and confocal fluorescence images of live MCF7 cells not treated with C2 but exposed to photoirradiation at 405 nm for 30 min; the cells were treated with DCFDA and fluorescence images were obtained at 529 nm after excitation at 495 nm (Fig. S7). ESI videos 1 and 2. CCDC 967841. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4dt00845f Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file.

Cyclometalated iridium complexes have important applications as phosphorescent probes for cellular imaging due to their photophysical properties. Moreover, these properties also make them potential candidates as photosensitizers for photodynamic therapy (PDT) of tumors and skin diseases. Treatment of MCF7 breast carcinoma cells with a heteroleptic phosphorescent cyclometalated iridium(III) comp...

Optical and electronic properties of air-stable organoboron compounds with strongly electron-accepting bis(fluoromesityl)boryl groups† †Electronic supplementary information (ESI) available: Experimental details. Additional views of the molecular structures from X-ray diffraction. Cyclic voltammograms of 2 and 3. Plots of calculated lowest energy transitions versus UV-visible absorption spectra. Variable-temperature emission and excitation spectra. Copies of all NMR spectra. Cartesian coordinates of all optimised geometries. CCDC 1010408–1010412. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4sc02410a Click here for additional data file. Click here for additional data file.

Institut für Anorganische Chemie, Julius Hubland, 97074 Würzburg, Germany. E-ma School of Medicine, Pharmacy and Health, Stockton-on-Tees, TS17 6BH, UK Department of Chemistry, University of Tor M5S 3H6, Canada Institut für Organische Chemie, JuliusHubland, 97074 Würzburg, Germany † Electronic supplementary information Additional views of the molecular stru voltammograms of 2 and 3. Plots of ca...

Acid/base-regulated reversible electron transfer disproportionation of N–N linked bicarbazole and biacridine derivatives† †Electronic supplementary information (ESI) available: Experimental information, synthesis and characterization data, NMR spectra, solid state NMR data, X-ray data, ESR spectra, UV-Vis-NIR spectra, fluorescence spectra, kinetic experiments, theoretical calculations, Tables S1–S8, Scheme S1, Fig. S1–12, References. CCDC 1025063, 1038914, 1049677 and 1040722. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc00946d

Biophysical and Molecular Docking Studies of Human Serum Albumin Interactions with a Potential Anticancer Pt(II) Complex

The interaction between [Pt(phen)(pyrr-dtc)]NO3 (where phen = 1,10-phenanthroline and pyrr-dtc =pyrrolidinedithiocarbamat) with human serum albumin (HSA) was studied by fluorescence, UV–vis absorption, circular dichroism (CD) spectroscopy and molecular docking technique under like physiological condition in Tris–HCl buffer solution at pH 7.4. UV-Vis absorption spectroscopy indicates that the pro...

Platinum-oxygen Bond Formation: Kinetic and Mechanistic Studies

Reaction of [PtMe(C^N)(SMe2)] (C^N = 2-phenylpyridinate (ppy); 1a, C^N = benzo[h]quinolate, (bhq); 1b) with hydrogen peroxide gives the platinum(IV) complexes trans-[PtMe(OH)2(C^N)(H2O)] (C^N = ppy; 3a, C^N = bhq, 3b) bearing platinum-oxygen bonds. The Pt(II) complexes 1a and 1b have 5dπ(Pt)→π*(C^N) MLCT band in the visible region which is used to easily follow the kinetic of its reaction with ...