Stereo- and oligo-controlled synthesis of oligo[p-phenylene-(E)-vinylene]-p-benzoic acid derivatives: basic building blocks for oligo[p-phenylene-(E)-vinylene]s
作者:Tze-Lock Chan、Hak-Fun Chow、Sun Fong、Man-Kit Leung、Jingren Tu
DOI:10.1039/c39940001919
日期:——
Oligo[p-phenylene-(E)-vinylene]benzoic acids of up to four aromatic units are synthesized in complete oligo- and excellent (E)-stereo-control via an iterative modified Ramberg–Bäcklund reaction; these extended π-systems can be used to construct oligo [p-phenylene(E)-vinylene]s in good yields.
The reductive charging–discharging behaviour of several newly synthesized soluble oligo-p-phenylene-vinylenes was studied by cyclic voltammetry; the results show that both the number of redox states and the magnitude of their energetic interaction depend on the chain length of the corresponding oligomer.