Examples of hula-twist in photochemical cis- trans isomerization.
ALiu and Hammond recently reasoned that the hula-twist (HT), a volume-conserving cis-trans isomerization mechanism, is involved in reactions of confined systems. We now show that HT can be applied to various reported photochemical isomerization of chromophores (small organic systems as well as photoactive bio-pigments). The results, when taken as a whole, argue powerfully that HT is a common supramolecular photoisomerization reaction mechanism.
Liu
R S
RS
Department of Chemistry, University of Hawaii, Honolulu 96822, USA. rliu@gold.chem.hawaii.edu
Hammond
G S
GS
D001426:Bacterial Proteins / Q000737:chemistry; D005030:Ethylenes / Q000737:chemistry; D007536:Isomerism; D008968:Molecular Conformation; D010777:Photochemistry; D020283:Photoreceptors, Microbial; D012177:Retinol-Binding Proteins / Q000737:chemistry
D001426:Bacterial Proteins; D005030:Ethylenes; D020283:Photoreceptors, Microbial; D012177:Retinol-Binding Proteins; C050162:photoactive yellow protein, Bacteria