“…A similar stabilization was seen by Gord et al 363 for N 2 O 5 to Br 2 conversion and by Faust et al 364 for Cl 2 to Br 2 conversion, both on tetrahexylammonium-coated glycerol, and to a lesser extent for Cl 2 to Br 2 conversion on glycerol coated with the zwitterionic phospholipid dihexanoylphosphotidylcholine (DHPC). 363 Chen et al 365 also saw that tetrabutylammonium ions enhanced the reactivity of gas-phase ozone with bromide ions in aqueous solutions, not only because the surfactant draws more Br À to the surface, but also because the surfactant stabilizes the bromide ozonide intermediate, increasing its lifetime by an order of magnitude. In these cases, the quaternary ammonium surfactants brought gas-phase and solution-phase reactants together in close proximity and thereby promoted the multiphase reactions.…”