Synthetic procedures providing access to mesyl and triflyl functionalized derivatives of 1,3-bis(2,6-diisopropylphenyl)-imidazolidin-2-ylidene (SIPr) have been provided in detail. New luminescent carbene-metal-amide (CMA) Cu(I) complexes based on acceptor group functionalized SIPr have been prepared. The effect of the LUMO energy in the sulfonyl functionalized N-heterocyclic carbene (NHC) series on the emissive properties of the CMAs has been investigated.
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