Chemistry–A European Journal

Towards Photocontrol over the Helix–Coil Transition in Foldamers: Synthesis and Photoresponsive Behavior of Azobenzene??Core Amphiphilic Oligo (meta?? …

A Khan, S Hecht

Index: Khan, Anzar; Hecht, Stefan Chemistry - A European Journal, 2006 , vol. 12, # 18 p. 4764 - 4774

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Citation Number: 78

Abstract

Abstract Introduction of photochromic azobenzene units into amphiphilic oligo (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 with varying connectivities to the central ...