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- W2891628318 abstract "We report the synthesis of two isomeric Pt(II) complexes ligated by doubly deprotonated 1,1′-bis(o-carborane) (bc). The κ2-C,C-bound isomer (3a) is generated through salt metathesis of K2[bc] and Pt(dtb-bpy)Cl2 (dtb-bpy = 4,4′-di-tert-butyl-2,2′-bipyridine), whereas the κ2-B,C-bound isomer (3b) forms after the addition of K[H-bc] to a reaction mixture containing the Pt(II) starting material and an alkyl lithium reagent. The structures of both isomers were confirmed with 1H NMR spectroscopy and single crystal X-ray crystallography. A cathodic shift is observed for both oxidation (>260 mV) and reduction (∼130 mV) potentials of 3b versus those of 3a, which is corroborated by DFT calculations of both complexes. While photophysical studies reveal similar quantum yields and excited state lifetimes for both isomers, emission spectra for 3b in a PMMA film, frozen solution at 77 K, and as a neat solid are slightly blue-shifted relative to the corresponding emission spectra for 3a. Ultimately, this work provides a potential route to fine-tune the electronic properties of luminescent metal complexes by virtue of vertex-differentiated coordination chemistry of carborane-based ligands." @default.
- W2891628318 created "2018-09-27" @default.
- W2891628318 creator A5015806434 @default.
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- W2891628318 creator A5065187288 @default.
- W2891628318 creator A5078697351 @default.
- W2891628318 creator A5084906314 @default.
- W2891628318 date "2018-09-04" @default.
- W2891628318 modified "2023-09-25" @default.
- W2891628318 title "Fine-Tuning Electronic Properties of Luminescent Pt(II) Complexes via Vertex-Differentiated Coordination of Sterically Invariant Carborane-Based Ligands" @default.
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