Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 23, Issue 57, Pages 14173-14176Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201703908
Keywords
cyclometalated C<^>C*; NHC; OLED; photophysics; platinum
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The synthesis and characterization of cyclometalated C<^>C* platinum(II) complexes with unique photophysical properties, aggregation induced enhancement of the quantum yields with a simultaneous decrease of phosphorescence lifetimes, is reported. Additionally, a change of emission color is induced by variation of the excitation wavelength. The aggregation behavior of these complexes is controlled by the steric demand of the substituents. The photophysical properties of these complexes are investigated through emission-excitation matrix analysis(EEM). The monomeric complexes are excellent room temperature phosphorescent blue emitters with emission maxima below 470 nm and quantum yields of up to 93%.
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