K. Kimura et al., DESIGN OF PHOTOCHROMIC CROWN COMPOUNDS AND THEIR APPLICATIONS TO PHOTOSWITCHABLE ION-CONDUCTING MATERIALS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 246, 1994, pp. 173-176
Crowned spirobenzopyran and spironaphthoxazine have been designed whic
h are capable of modulating their cation-binding ability by photoisome
rization. They have been successfully applied as a key compound for ph
otoswitchable ion-conducting composite films.