With the replacement of only one hydrogen atom by fluorine, 4-fluorobenzyl-diphenylalanine was able to form a transparent hydrogel, while benzyl-diphenylalanine did not under similar conditions, indicating the remarkable effect of fluorine on supramolecular hydrogelation.
F. Wu, S. Hsu, H. Cheng, L. Hsu and H. Lin, New J. Chem., 2015, 39, 4240 DOI: 10.1039/C5NJ00786K
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