Singlet Heterofission in Tetracene–Pentacene Thin‐Film Blends

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Abstract: Heterofission is a photophysical process of fundamental and applied interest whereby an excited singlet state is converted into two triplets on chemically distinct chromophores. The potential of this process lies in the tuning of both the optical band gap and the splitting between singlet and triplet energies. Herein, we report the time‐domain observation of heterofission in mixed thin films of the prototypical singlet fission chromophores pentacene and tetracene using excitation wavelengths above and below the tetracene band gap. We found a time constant of 26 ps for endothermic heterofission of a singlet exciton on pentacene in blends with low pentacene fractions, which was outcompeted by pentacene homofission for increasing pentacene concentrations. Direct excitation of tetracene lead to fast energy transfer to pentacene and subsequent singlet fission, which prevented homo‐ or heterofission of a singlet exciton on tetracene.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Singlet Heterofission in Tetracene–Pentacene Thin‐Film Blends ; volume:59 ; number:45 ; year:2020 ; pages:19966-19973 ; extent:8
Angewandte Chemie / International edition. International edition ; 59, Heft 45 (2020), 19966-19973 (gesamt 8)

Creator: Zeiser, Clemens
Moretti, Luca
Lepple, Daniel
Cerullo, Giulio
Maiuri, Margherita
Broch, Katharina

DOI: 10.1002/anie.202007412

URN: urn:nbn:de:101:1-2022061906391324307849

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:38 AM CEST

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Zeiser, Clemens
Moretti, Luca
Lepple, Daniel
Cerullo, Giulio
Maiuri, Margherita
Broch, Katharina

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Singlet Heterofission in Tetracene–Pentacene Thin‐Film Blends

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Other Objects (12)

Robust singlet fission in pentacene thin films with tuned charge transfer interactions

Singlet Fission in Dideuterated Tetracene and Pentacene

Singlet Fission in Enantiomerically Pure Pentacene Dimers

Efficient Energy Transfer and Singlet Fission in Co-Deposited Thin Films of Pentacene and Anthradithiophene

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Blends of Conjugated and Adhesive Polymers for Sticky Organic Thin‐Film Transistors

Solution-based intramolecular singlet fission in cross-conjugated pentacene dimers

Spin density encodes intramolecular singlet exciton fission in pentacene dimers

Pentacene thin films on diamond surfaces

Nd x Hf (1− x) ON as Gate Dielectric for High‐Performance Pentacene Organic Thin‐Film Transistors

Förster Resonance Energy Transfer Sensitized Singlet Fission in BODIPY‐Pentacene Dimer Conjugates

Alternative Face-on Thin Film Structure of Pentacene

Robust singlet fission in pentacene thin films with tuned charge transfer interactions

Singlet Fission in Dideuterated Tetracene and Pentacene

Singlet Fission in Enantiomerically Pure Pentacene Dimers

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Blends of Conjugated and Adhesive Polymers for Sticky Organic Thin‐Film Transistors

Solution-based intramolecular singlet fission in cross-conjugated pentacene dimers

Spin density encodes intramolecular singlet exciton fission in pentacene dimers

Pentacene thin films on diamond surfaces

Nd x Hf (1− x) ON as Gate Dielectric for High‐Performance Pentacene Organic Thin‐Film Transistors

Förster Resonance Energy Transfer Sensitized Singlet Fission in BODIPY‐Pentacene Dimer Conjugates

Alternative Face-on Thin Film Structure of Pentacene

Robust singlet fission in pentacene thin films with tuned charge transfer interactions

Singlet Fission in Dideuterated Tetracene and Pentacene

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Efficient Energy Transfer and Singlet Fission in Co-Deposited Thin Films of Pentacene and Anthradithiophene

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Alternative Face-on Thin Film Structure of Pentacene

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