Abstract

Circularly polarized luminescence (C.P.L.) spectroscopy has been recently accepted as a unique technique which detects a difference in intensities between left- and right-circularly polarized emission and thereby elucidates chirality of optical active molecules in the emitting state[1]. This spectroscopic means is complementary to circular dichroism(CD) spectroscopy in which information in the ground state is obtained. We have been interested in studying vicinal effects of chiral rare earth cmoplexes by CPL spectroscopy[2]. In order to investigate conformational and configurational effects, we have extended our work to tris chelate chromium (III) complexes of D₃ symmetry. Since chiral fluorescent molecules are easily damaged by photolysis, we have also constructed a very sensitive and stable digital instrument based on an Apple II microcomputer for the measurements of CPL spectra.

© 1984 Optical Society of America