A series of square-planar Pt(II) complexes [Pt(C^N)(O^O)] (1-5) (C^N ¼ 2-phenylpyridine, O^O denotes a series of b-diketonate ligands) is reported. Detailed studies of theoretical calculations, electrochemical and photophysical properties have shown that their excited states can be attributed to the mixing of 3 MLCT, 3 LLCT and 3 LC/ 3 ILCT transitions. For 1, the excited state is dominated by the C^N ligand. The excited states of complexes 2-5, however, are dominated by O^O ligands. Through variation of the b-diketonate ligands, the emission colors of 1-5 can be tuned from blue-green to yellow. Further investigations have revealed that the emission of 4 in the solid state can be attributed to the 3 MLCT and 3 LLL'CT transitions, which has been confirmed by X-ray diffraction studies as well as theoretical calculations. Moreover, exclusive staining of cytoplasm and low cytotoxicity have been observed for 1-4, which makes them promising candidates as phosphorescent probes for bioimaging.
A highly selective fluorescent probe BBDPB for F À was realized on the basis of the boron-dipyrromethene (BODIPY) dye containing two dimesitylboryl (Mes 2 B) moieties. The fluorophore displays highly efficient orange-red fluorescence with an emission peak of 602 nm and quantum efficiency (Φ) of 0.65 in dichloromethane solution. Signaling changes were observed through UV/vis absorption and photoluminescence spectra. Obvious spectral changes in absorption and fluorescent emission bands were detected after adding F À in company with an obvious solution color change from pink to deep blue. The effects of F À on the electronic structure of BBDPB were studied in detail by performing theoretical calculations using the Gaussian 03 package. According to the theoretical calculation and contrast experiments, the binding of Mes 2 B moieties with F À would give rise to nonradiative photoinduced-electron-transfer (PeT) deactivation from Mes 2 B moieties to BODIPY core and then quench the fluorescence. To implement this approach, an excellent solid-film sensing device was designed by doping BBDPB in polymethylmethacrylate (PMMA).' ASSOCIATED CONTENT b S Supporting Information. Characterization data of compounds, normalized UVÀvis and PL spectroscopic of BBDPB in different solvents, and UVÀvis and PL spectroscopic titrations of BBDPB (2 Â 10 À6 M) with different anions. This material is available free of charge via the Internet at http://pubs.acs.org.
A 12.3 inch FHD flexible AMOLED display with high brightness, fast response time, wide color gamut and small bending radius for automotive application was demonstrated. In order to improve the display quality, de‐mura, IR‐drop and burn‐in compensation algorithms were implemented and got very positive compensation effects. We investigated the shape of the cover glass, the flexible 3D assembly equipment, the configuration of driving circuit board and materials. Combining these technologies, we fabricated an “S” type curved automotive display with the bending radius of 100 mm.
A 12.3 inch FHD flexible AMOLED display module for vehicle application was produced and the heat dissipation was studied. Passive thermal management technology was investigated and a simplified steady heat transfer model was established to analysis the thermal properties of the vehicle AMOLED display module. The simulation results were good consistent with the measured data. By optimizing the structure and materials of heat dissipation, the surface temperature of the AMOLED display module with the luminance of 800 cd/m2 at full white pattern can be decreased to 42.5 °C which was 4.1 °C lower than that of without any dissipation films.
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