Fig. 6: Photoisomerization of vinyl groups in model compounds.
From: Molecular insights of exceptionally photostable electron acceptors for organic photovoltaics
a Photoisomerization and photooxidation of TFICH and TFIC. The photoisomerism of both b, TFICH and c, TFIC after 10 h illumination (from ZS to the co-mixture ZS + ES) that are reversible process upon heat treatment (recovered ZS), and further decomposition of TFICH after 220 h illumination (after oxidation). d Temperature-dependent NMR of TFICH in d4-C6D4Cl2 (heated from 25 to 120 °C, and then cooled down to 25 °C) e, the changes of ZS/ES isomer ratio for TFICH and TFIC upon heating treatment.
