Abstract
An inversion in the sign of circularly polarized luminescence (CPL) was achieved by strategically varying the substitution positions of phenylethynyl (PE) groups on the binaphthyl backbone while maintaining consistent axial chirality. Theoretical investigations indicated that the substitution position of PE groups on binaphthyl significantly influence the orientation of the transition dipole moments in the excited state, resulting in the sign inversion of CPL in 7-PEn compared with other substrates.
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