Quadruply Bridging Strategy Intensifies Circularly Polarized Luminescence of Azapyrenophanes
Abstract
Multibridged azapyrenophanes were synthesized as organic circularly polarized luminescence (CPL) emitters. The g lum reached +0.12 and the B CPL amounted to 2,600 M –1 cm –1 at −95 °C. The xylylene-bridging to the binaphthyl-bridged pyrenophane produced a quadruply bridged structure that prompted the pyrene excimer to adopt a D 2 -symmetric rigid conformation. This strategy maximized the latent CPL performance. Furthermore, these emitters functioned as temperature- and acid/base-triggered (+)/(−)- or on/off-CPL switches in which enantiospecific responses toward chiral solvents were also observed.
Fields of Study & Subjects
Synthesis and Properties of Aromatic Compounds
Luminescence and Fluorescent Materials
Supramolecular Chemistry and Complexes
Publication details
- Journal / source
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Volume
- 148
- Issue
- 6
- Pages
- 5923–5929
- Publication date
- 3 February 2026
- Language
- EN