Switchable polarity solvent (SPS) systems: probing solvatoswitching with a spiropyran (SP)-merocyanine (MC) photoswitch.

@article{Boyd2013SwitchablePS,
  title={Switchable polarity solvent (SPS) systems: probing solvatoswitching with a spiropyran (SP)-merocyanine (MC) photoswitch.},
  author={Alaina R. Boyd and Philip G Jessop and Julian M. Dust and Erwin Buncel},
  journal={Organic & biomolecular chemistry},
  year={2013},
  volume={11 36},
  pages={
          6047-55
        }
}
The switchable polarity solvent (SPS) of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and an alcohol (e.g. 1-propanol) reversibly switches to a higher polarity ionic liquid, [DBUH(+)][RCO3(-)], when treated with CO2. A long-lived species with unique properties was detected in an investigation into the use of SPS to control the lifetime of the merocyanine (MC) form in a spiropyran (SP)-MC molecular photoswitch. Irradiation of SP in 1-propanol (PrOH) in the presence of DBU generates a new species… CONTINUE READING