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Determination of the molar mass of the carboxylic acid Krytox used in all experiments. (A) ESI-MS spectrum of Krytox. (B) [1H] NMR of a solution of 1:1 (wt/wt) of Krytox and Novec7500. To obtain the molar mass, the integrals of the triplet and the quartet from the ethoxy groups are related to the integral of the singlet from the carboxylic end group.
