Lattice Period 300 350 400 TiO 2 pendence on the Rabi splitting as shown in panel b(ii). This work utilized plasmonic nanoantennae (panel (i)) to produce a strong cavity field that couples to the dye molecules and generates a large Rabi splitting between the polariton states. These polariton states are able to decay the excited population to the ground state more quickly before the excited population can transfer to the triplet state and undergo photobleaching, which reduces the photobleaching rate inside the cavity (panel (ii)) thus increasing the stability of the dye inside the cavity. This effect of this mechanism is enhanced for larger Rabi splittings.