| Abstract
| - Surface tension, 19F and 1H NMR spectroscopy, and cryotransmission electron microscopy are used to characterizethe state of association in aqueous solutions of a fluorosurfactant CF3(CF2)nSO2NH(CH2)3-4N(CH3)3+ I- (n = 8, 6)with and without lysozyme added. In the absence of lysozyme, we find monomers, small aggregates, and large vesiclesto coexist, with the individual fluorosurfactant molecules exchanging slowly (>1 ms) among those states. When bothlysozyme and fluorosurfactant are present in the solution, they have no measurable influence on the physical stateof the other. In contrast, a hydrogenated cationic surfactant with the same headgroup, hexadecyltrimethylammoniumbromide, is shown to associate to lysozyme.
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