Supramolecular Hydrogels and High-Aspect-Ratio Nanofibers through Charge-Transfer-Induced Alternate Coassembly


  • We thank Prof. C. N. R. Rao for his valuable suggestions, and support throughout this work. We thank JNCASR and Department of Science and Technology, Government of India for financial support. We thank Prof. G. U. Kulkarni for Veeco-lab and FE-SEM facilities. We acknowledge Selvi (FE-SEM), Basavaraj (AFM), and Usha (TEM) for microscopic measurements. K.V.R. and K.J. thank the CSIR for research fellowships.


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Gelling together: The alternate coassembly of a noncovalent donor–acceptor (D–A) amphiphilic pair in water results in very long nanofibers that form hydrogels (see scheme). Microscopic and single-crystal studies have provided an insight into the hierarchical self-assembly of the charge-transfer (CT) amphiphile, which consists of coronene and a viologen derivative, into cylindrical micelles and gels as the concentration of the D–A pair is increased.