Baram Jonathan, Shirman Elijah, Ben-Shitrit Netanel, Ustinov Alona, Weissman Haim, Pinkas Iddo, Wolf Sharon G, Rybtchinski Boris
Departments of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
J Am Chem Soc. 2008 Nov 12;130(45):14966-7. doi: 10.1021/ja807027w. Epub 2008 Oct 17.
Self-assembling systems, whose structure and function can be reversibly controlled in situ are of primary importance for creating multifunctional supramolecular arrays and mimicking the complexity of natural systems. Herein we report on photofunctional fibers self-assembled from perylene diimide cromophores, in which interactions between aromatic monomers can be attenuated through their reduction to anionic species that causes fiber fission. Oxidation with air restores the fibers. The sequence represents reversible supramolecular depolymerization-polymerization in situ and is accompanied by a reversible switching of photofunction.
自组装系统的结构和功能可以在原位进行可逆控制，这对于创建多功能超分子阵列和模拟自然系统的复杂性至关重要。在此，我们报道了由苝二酰亚胺发色团自组装而成的光功能纤维，其中芳香族单体之间的相互作用可以通过将它们还原为导致纤维分裂的阴离子物种而减弱。用空气氧化可使纤维恢复原状。该过程代表了原位可逆的超分子解聚-聚合，并伴随着光功能的可逆切换。
