Picosecond time-resolved photon antibunching measures nanoscale exciton motion and the true number of chromophores

Abstract

Photon antibunching typically measures the time-averaged photophysics of multichromophoric nanoparticles. Here, the authors report on time-resolving photon antibunching, allowing the true number of chromophores and exciton diffusion to be measured in DNA origami and conjugated polymer aggregates.