Towards Photocontrol over the Helix–Coil Transition in Foldamers: Synthesis and Photoresponsive Behavior of Azobenzene-Core Amphiphilic Oligo(meta-phenylene ethynylene)s
作者:Anzar Khan、Stefan Hecht
DOI:10.1002/chem.200501564
日期:2006.6.14
Introduction of photochromic azobenzene units into amphiphilicoligo(meta-phenylene ethynylene)s allowed photocontrol over the helix-coil transition in this important class of foldamers. Two design principles were followed in efforts to accommodate cis- and trans-azobenzene moieties within the helical structure to selectively turn the helical state on and off, respectively. Several oligomer series
Control over Unfolding Pathways by Localizing Photoisomerization Events within Heterosequence Oligoazobenzene Foldamers
作者:Zhilin Yu、Stefan Hecht
DOI:10.1002/anie.201307378
日期:2013.12.16
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 (shown in red) either at the core (left) or at the termini (right) of the helix.
Templated Hierarchical Self-Assembly of Poly(<i>p</i>-aryltriazole) Foldamers
作者:Rueben Pfukwa、Paul H. J. Kouwer、Alan E. Rowan、Bert Klumperman
DOI:10.1002/anie.201303135
日期:2013.10.11
biomimetic approach has been used for the templated self‐assembly of a helical poly(para‐aryltriazole) foldamer. The solvophobic folding process yields helices that further self‐assemble into long nanotubes (see picture; scale bar: 100 nm). Constructs of controlled length and chirality can be generated by applying a poly(γ‐benzyl‐l‐glutamate) scaffold at the appropriate assembly conditions, mimicking