Supplemental Information (SI) A lists the sources and purities of all the samples tested in this study. Most were purchased from commercial vendors while some were custom-synthesized. The details of synthesis are described in for PN, LMA, and THSB; for DHSB, DHCR, and THCR; and for DMCO. POSF10325 is a conventional petroleum-derived Jet-A fuel with average/nominal values of flash point, viscosity, and aromatics content .