Phosphorescent Platinum(II) Complexes with C^C* Cyclometalated NHC Dibenzofuranyl Ligands: Impact of Different Binding Modes on the Decay Time of the Excited State
作者： Alexander Tronnier , Gerhard Wagenblast , Ingo Münster , Thomas Strassner
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摘要: Two C^C* cyclometalated platinum(II) N-heterocyclic carbene (NHC) complexes with the general formula [(C^C*)Pt(O^O)] (C^C*=1-dibenzofuranyl-3-methylbenzimidazolylidene; O^O=dimesitoylmethane) have been synthesized and extensively characterized, including solid-state structure determination, (195) Pt NMR spectroscopy, 2D NMR (COSY, HSQC, HMBC, NOESY) spectroscopy to elucidate impact of their structural differences. The two regioisomers differ in way dibenzofuranyl (DBF) moiety NHC ligand is bound metal center, which induces significant changes physicochemical properties, especially on decay time excited state. Quantum yields over 80 % blue emission colors were measured.
sci-hub.se 参考文章(44)
Mario Tenne, Yvonne Unger, Thomas Strassner, (Acetylacetonato-κ2O,O')[1-(4-bromophenyl-κC2)-3-methylimidazol-2-ylidene-κC2]platinum(II). Acta Crystallographica Section C-crystal Structure Communications. ,vol. 68, ,(2012) , 10.1107/S0108270112027783
M. A. Baldo, D. F. O'Brien, Y. You, A. Shoustikov, S. Sibley, M. E. Thompson, S. R. Forrest, Highly efficient phosphorescent emission from organic electroluminescent devices Nature. ,vol. 395, pp. 151- 154 ,(1998) , 10.1038/25954
Alexander Tronnier, Nicole Nischan, Stefan Metz, Gerhard Wagenblast, Ingo Münster, Thomas Strassner, Phosphorescent C∧C* Cyclometalated PtII Dibenzofuranyl-NHC Complexes – An Auxiliary Ligand Study European Journal of Inorganic Chemistry. ,vol. 2014, pp. 256- 264 ,(2014) , 10.1002/EJIC.201301398
Biwu Ma, Jian Li, Peter I. Djurovich, Muhammed Yousufuddin, Robert Bau, Mark E. Thompson, Synthetic control of Pt...Pt separation and photophysics of binuclear platinum complexes. Journal of the American Chemical Society. ,vol. 127, pp. 28- 29 ,(2005) , 10.1021/JA044313W
Pi-Tai Chou, Yun Chi, Min-Wen Chung, Chao-Chen Lin, Harvesting luminescence via harnessing the photophysical properties of transition metal complexes Coordination Chemistry Reviews. ,vol. 255, pp. 2653- 2665 ,(2011) , 10.1016/J.CCR.2010.12.013
J. A. Gareth Williams, Andrew Beeby, E. Stephen Davies, Julia A. Weinstein, Claire Wilson, An Alternative Route to Highly Luminescent Platinum(II) Complexes: Cyclometalation with N∧C∧N-Coordinating Dipyridylbenzene Ligands Inorganic Chemistry. ,vol. 42, pp. 8609- 8611 ,(2003) , 10.1021/IC035083+
Ester Rossi, Alessia Colombo, Claudia Dragonetti, Dominique Roberto, Renato Ugo, Adriana Valore, Luigi Falciola, Pierpaolo Brulatti, Massimo Cocchi, J. A. Gareth Williams, Novel N^C^N-cyclometallated platinum complexes with acetylide co-ligands as efficient phosphors for OLEDs Journal of Materials Chemistry. ,vol. 22, pp. 10650- 10655 ,(2012) , 10.1039/C2JM16592A
Alexander Tronnier, David Schleicher, Thomas Strassner, (C∧C*)-cyclometalated platinum(II) imidazo[1,5-a]pyridine NHC complexes – Synthesis and characterization Journal of Organometallic Chemistry. ,vol. 775, pp. 155- 163 ,(2015) , 10.1016/J.JORGANCHEM.2014.04.021
Kyoung Soo Yook, Jun Yeob Lee, Organic Materials for Deep Blue Phosphorescent Organic Light-Emitting Diodes Advanced Materials. ,vol. 24, pp. 3169- 3190 ,(2012) , 10.1002/ADMA.201200627
Tissa Sajoto, Peter I. Djurovich, Arnold B. Tamayo, Jonas Oxgaard, William A. Goddard, Mark E. Thompson, Temperature Dependence of Blue Phosphorescent Cyclometalated Ir(III) Complexes Journal of the American Chemical Society. ,vol. 131, pp. 9813- 9822 ,(2009) , 10.1021/JA903317W