Prolonged Charge Separated States in Twisted Stacks of All-Carbon Donor and Acceptor Chromophores

Philip, Abbey M. ; Mallia, Ajith R. ; Hariharan, Mahesh (2016) Prolonged Charge Separated States in Twisted Stacks of All-Carbon Donor and Acceptor Chromophores The Journal of Physical Chemistry Letters, 7 (22). pp. 4751-4756. ISSN 1948-7185

Full text not available from this repository.

Official URL: http://doi.org/10.1021/acs.jpclett.6b02310

Related URL: http://dx.doi.org/10.1021/acs.jpclett.6b02310

Abstract

Twisted donor-on-donor and acceptor-on-acceptor bicontinuous assembly in all-carbon pyren-1-ylaceanthrylene (PA) dyad extends the survival time of the photoinduced radical ion-pair intermediates. Aceanthrylene, a functional analog of C70, acts as a versatile electron acceptor owing to its high electron affinity and visible light absorption. Antithetical trajectories of the excitons in the nonparallel π-ways led to persistent radical ion-pair intermediates in aggregated (τcrA ∼ 1.28 ns) vs monomeric (τcrM ≤ 110 fs) PA dyad as observed using femtosecond transient absorption spectroscopy. Marcus theory of charge transfer rates predicts an ambipolar transport characteristic in crystalline PA, thereby endorsing PA as an all-carbon DA hybrid for nonfullerene photovoltaic applications.

Item Type:Article
Source:Copyright of this article belongs to ResearchGate GmbH.
ID Code:126917
Deposited On:17 Oct 2022 05:29
Last Modified:17 Oct 2022 05:29

Repository Staff Only: item control page