Control over unfolding pathways by localizing photoisomerization events within heterosequence oligoazobenzene foldamers
From the inside out or from the outside in? Two photoswitchable foldamers that incorporate azobenzene moieties as the energy-acceptor units have been designed. The pathway of helix unfolding can be controlled by localizing these photoinduced triggers (sho
(Figure Presented) Know where to fold 'em: A foldamer exhibiting a light-induced helix-coil transition (see scheme) can be constructed by introducing a photochromic azobenzene moiety (red) into the center of an amphiphilic phenylene ethynylene backbone (blue). This system gives insight into folding and unfolding mechanisms and promises applications in photoresponsive (bio)materials and "smart" delivery devices based on photoresponsive dynamic receptors.
Khan, Anzar,Kaiser, Christian,Hecht, Stefan
p. 1878 - 1881
(2007/10/03)
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