Abstract
Chiral transition metal complexes have attracted significant attention for the development of optoelectrical materials, such as circularly polarized phosphorescence (CPP)-emitting devices. In this paper, we report the helicity induction of d-π-conjugated platinum(II) complexes by the point chirality on 1,2-diaminocyclohexane and their CPP properties. The obtained C2-helical complexes exhibited excellent chiroptical properties with high dissymmetry factors (circular dichroism: gabs = 1.2 × 10–2, CPP: gphos = 3.2 × 10–3). Moreover, we conducted a theoretical investigation of the dissymmetry factor of CPP, gphos,calc, using a kinetic model of triplet state sublevels. The ab initio calculations represented the experimental gphos values, as well as the impact of helical chirality on the CPP.
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