期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 18, 期 28, 页码 8622-8628出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201200898
关键词
charge-transfer interaction; nanostructures; n-type chromophores; supra-amphiphiles; supramolecular chemistry
资金
- National Basic Research Program [2007CB808000, 2011CB808200]
- NSFC [50973051, 20974059]
- NSFC-DFG [TRR 61]
- Beijing Municipal Commission of Education
- Tsinghua University Initiative Scientific Research Program [2009THZ02230]
With a rational design of the supra-amphiphiles, we have successfully demonstrated that not only the dimension of the self-assembled nanostructures, but also the packing fashion of the functional naphthalene diimide (a typical n-type chromophore), can be tuned in a noncovalent way in aqueous solution. Naphthalene diimide is incorporated into a bola-amphiphile as the rigid core, whereas viologen derivatives are used as the hydrophilic head. The bola-amphiphile self-assembles into two-dimensional nanosheets, in which naphthalene diimide adopts a J-type aggregation. Water-soluble supramolecular complexation between viologen derivatives and the 8-hydroxypyrene-1, 3, 6-trisulfonic acid trisodium salt is used as a driving force for the formation of the supra-amphiphiles. Upon formation of the supra-amphiphiles, the nanosheets transform into ultralong nanofibers with a close packing of naphthalene diimide. Notably, just by mixing the two building blocks of the supra-amphiphiles in aqueous solution, a dimension-controlled evolution of the nanostructures is formed that leads to a different packing fashion of the n-type functional chromophores, which is facile and environmental friendly.
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