Solvent-controlled sign inversion of circularly polarized luminescent binaphthylacetic acid derivative

For the selective emission of positive- and negative-sign circularly polarized luminescence (CPL), two chiral organic luminophores with opposing chirality are generally needed. In this study, the solution state CPL sign of an axially chiral binaphthylacetic acid organicluminophore was successfully controlled by changing the solvent from chloroform (or methanol) to dimethylformamide (or acetonitrile). (C) 2016 Elsevier B.V. All rights reserved.