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Title: Microscopic theory of singlet exciton fission. III. Crystalline pentacene

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4892793· OSTI ID:22419807
;  [1];  [2]
  1. Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027 (United States)
  2. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

We extend our previous work on singlet exciton fission in isolated dimers to the case of crystalline materials, focusing on pentacene as a canonical and concrete example. We discuss the proper interpretation of the character of low-lying excited states of relevance to singlet fission. In particular, we consider a variety of metrics for measuring charge-transfer character, conclusively demonstrating significant charge-transfer character in the low-lying excited states. The impact of this electronic structure on the subsequent singlet fission dynamics is assessed by performing real-time master-equation calculations involving hundreds of quantum states. We make direct comparisons with experimental absorption spectra and singlet fission rates, finding good quantitative agreement in both cases, and we discuss the mechanistic distinctions that exist between small isolated aggregates and bulk systems.

OSTI ID:
22419807
Journal Information:
Journal of Chemical Physics, Vol. 141, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
Country of Publication:
United States
Language:
English

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Cited By (40)

Feinabstimmung von intramolekularem resonantem Förster-Energietransfer und Aktivierung intramolekularer Singulettspaltung journal October 2018
Tuning Intramolecular Förster Resonance Energy Transfer and Activating Intramolecular Singlet Fission journal October 2018
Theoretical Studies of Singlet Fission: Searching for Materials and Exploring Mechanisms journal February 2018
Open-Shell-Character-Based Molecular Design Principles: Applications to Nonlinear Optics and Singlet Fission journal August 2016
The effect of sulfur and nitrogen/sulfur co-doping in graphene surface on the adsorption of toxic heavy metals (Cd, Hg, Pb) journal July 2019
Real-time observation of multiexcitonic states in ultrafast singlet fission using coherent 2D electronic spectroscopy journal October 2015
Coherent singlet fission activated by symmetry breaking journal May 2017
Robust singlet fission in pentacene thin films with tuned charge transfer interactions journal March 2018
Identifying triplet pathways in dilute pentacene films journal October 2018
A molecular movie of ultrafast singlet fission journal September 2019
Nonadiabatic dynamics simulations of singlet fission in 2,5-bis(fluorene-9-ylidene)-2,5-dihydrothiophene crystals journal January 2019
Topology of quantum coherence networks in singlet fission: mapping exciton states into real space and the dislocation induced three dimensional manifolds journal January 2020
Structural origins of the electronic properties of materials via time-resolved infrared spectroscopy journal January 2019
Collective aspects of singlet fission in molecular crystals journal July 2015
Entanglement entropy of electronic excitations journal May 2016
Quantum beats of a multiexciton state in rubrene single crystals journal February 2018
On the possibility of singlet fission in crystalline quaterrylene journal May 2018
Vibronic exciton theory of singlet fission. III. How vibronic coupling and thermodynamics promote rapid triplet generation in pentacene crystals journal June 2018
Singlet fission in spiroconjugated dimers journal May 2019
Monitoring of singlet fission via two-dimensional photon-echo and transient-absorption spectroscopy: Simulations by multiple Davydov trial states journal September 2019
Heavy-atom effects on intramolecular singlet fission in a conjugated polymer journal July 2019
Non-equilibrium relaxation of hot states in organic semiconductors: Impact of mode-selective excitation on charge transfer journal August 2019
Routes to singlet exciton fission in rubrene crystals and amorphous films journal September 2019
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First-Principles Quantum Dynamics of Singlet Fission: Coherent versus Thermally Activated Mechanisms Governed by Molecular π Stacking journal August 2015
Monte Carlo Wavefunction Approach to Singlet Fission Dynamics of Molecular Aggregates journal February 2019
Nonadiabatic simulation of singlet fission dynamics in tetracene clusters: The topology of quantum coherence in a global view journal August 2019
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Vibronic exciton theory of singlet fission. III. How vibronic coupling and thermodynamics promote rapid triplet generation in pentacene crystals text January 2018
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Intermolecular Packing Effects on Singlet Fission in Oligorylene Dimers journal August 2017
Singlet-Fission-Induced Enhancement of Third-Order Nonlinear Optical Properties of Pentacene Dimers journal September 2019
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Inverse Design of Potential Singlet Fission Molecules using a Transfer Learning Based Approach preprint January 2020
Nuclear dynamics of singlet exciton fission: a direct observation in pentacene single crystals text January 2020

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