Controlling Charge Carrier Dynamics in Porphyrin Nanorings by Optically Active Templates.

ABSTRACT: Understanding the dynamics of photogenerated charge carriers is essential for enhancing the performance of solar and optoelectronic devices. Using atomistic quantum dynamics simulations, we demonstrate that a short π-conjugated optically active template can be used to control hot carrier relaxation, charge carrier separation, and carrier recombination in light-harvesting porphyrin nanorings. Relaxation of hot holes is slowed by 60% with an optically active template compared to that with an analogous optically inactive template. Both systems exhibit subpicosecond electron transfer from the photoactive core to the templates. Notably, charge recombination is suppressed 6-fold by the optically active template. The atomistic time-domain simulations rationalize these effects by the extent of ele

SUBMITTER: Mondal S 

PROVIDER: S-EPMC10749466 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature