Photoinduced electron transfer and photocurrent in multicomponent organic molecular films containing oriented porphyrin-fullerene dyad

Kimmo Kaunisto (Corresponding Author), Tommi Vuorinen, Heidi Vahasalo, Vladimir Chukharev, Nikolai V. Tkachenko, Alexander Efimov, A. Tolkki, Heli Lehtivuori, Helge Lemmetyinen

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

Layers of poly(3-hexylthiophene), PHT, phenyl vinyl thiophene, PVT3, poly(p-phenylene-2,3′-bis(3,2′-diphenyl)-quinoxaline-7-7′-diyl), PPQ, and covalently linked porphyrin−fullerene donor−acceptor dyad, P−F, were deposited as various multilayer films, which then were used to study photoinduced electron transfer and photocurrent generation. The aim of the research was to clarify functioning of different energy and electron donating and accepting layers in charge transfer processes, which were initially created in a film consisting of parallel P−F molecules. The reactions were studied by means of time-correlated and steady-state fluorescence, time-resolved photovoltage, and electrochemical photocurrent measurements. The longest-lived charge-separated state and the highest efficiency of photocurrent generation were obtained for the multilayer structure of PHT|PVT3|porphyrin−fullerene. Porphyrin−fullerene dyads deposited parallel as the Langmuir –Blodgett film transfer electrons from porphyrin to fullerene yielding radical cation and anion moieties, respectively. The dyad on a PHT layer induces electron donation from PHT to the porphyrin cation. When PVT3 is deposited between the PHT and the P−F layers, it promotes both energy and electron transfer to the porphyrin moiety of the dyad, retards the recombination of the primary charge-separated state, and thus increases the photocurrent generation. PPQ was used as an electron acceptor from the fullerene radical anion, causing an increased lifetime of the charge separation.
Original languageEnglish
Pages (from-to)10256-10265
Number of pages10
JournalJournal of Physical Chemistry C
Volume112
Issue number27
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

Fullerenes
Porphyrins
Photocurrents
porphyrins
fullerenes
photocurrents
electron transfer
Electrons
anions
cations
quinoxalines
electrons
Anions
Cations
photovoltages
Negative ions
polarization (charge separation)
Langmuir-Blodgett films
thiophenes
Positive ions

Cite this

Kaunisto, Kimmo ; Vuorinen, Tommi ; Vahasalo, Heidi ; Chukharev, Vladimir ; Tkachenko, Nikolai V. ; Efimov, Alexander ; Tolkki, A. ; Lehtivuori, Heli ; Lemmetyinen, Helge. / Photoinduced electron transfer and photocurrent in multicomponent organic molecular films containing oriented porphyrin-fullerene dyad. In: Journal of Physical Chemistry C. 2008 ; Vol. 112, No. 27. pp. 10256-10265.
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title = "Photoinduced electron transfer and photocurrent in multicomponent organic molecular films containing oriented porphyrin-fullerene dyad",
abstract = "Layers of poly(3-hexylthiophene), PHT, phenyl vinyl thiophene, PVT3, poly(p-phenylene-2,3′-bis(3,2′-diphenyl)-quinoxaline-7-7′-diyl), PPQ, and covalently linked porphyrin−fullerene donor−acceptor dyad, P−F, were deposited as various multilayer films, which then were used to study photoinduced electron transfer and photocurrent generation. The aim of the research was to clarify functioning of different energy and electron donating and accepting layers in charge transfer processes, which were initially created in a film consisting of parallel P−F molecules. The reactions were studied by means of time-correlated and steady-state fluorescence, time-resolved photovoltage, and electrochemical photocurrent measurements. The longest-lived charge-separated state and the highest efficiency of photocurrent generation were obtained for the multilayer structure of PHT|PVT3|porphyrin−fullerene. Porphyrin−fullerene dyads deposited parallel as the Langmuir –Blodgett film transfer electrons from porphyrin to fullerene yielding radical cation and anion moieties, respectively. The dyad on a PHT layer induces electron donation from PHT to the porphyrin cation. When PVT3 is deposited between the PHT and the P−F layers, it promotes both energy and electron transfer to the porphyrin moiety of the dyad, retards the recombination of the primary charge-separated state, and thus increases the photocurrent generation. PPQ was used as an electron acceptor from the fullerene radical anion, causing an increased lifetime of the charge separation.",
author = "Kimmo Kaunisto and Tommi Vuorinen and Heidi Vahasalo and Vladimir Chukharev and Tkachenko, {Nikolai V.} and Alexander Efimov and A. Tolkki and Heli Lehtivuori and Helge Lemmetyinen",
year = "2008",
doi = "10.1021/jp8003008",
language = "English",
volume = "112",
pages = "10256--10265",
journal = "Journal of Physical Chemistry C",
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Photoinduced electron transfer and photocurrent in multicomponent organic molecular films containing oriented porphyrin-fullerene dyad. / Kaunisto, Kimmo (Corresponding Author); Vuorinen, Tommi; Vahasalo, Heidi; Chukharev, Vladimir; Tkachenko, Nikolai V.; Efimov, Alexander; Tolkki, A.; Lehtivuori, Heli; Lemmetyinen, Helge.

In: Journal of Physical Chemistry C, Vol. 112, No. 27, 2008, p. 10256-10265.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Photoinduced electron transfer and photocurrent in multicomponent organic molecular films containing oriented porphyrin-fullerene dyad

AU - Kaunisto, Kimmo

AU - Vuorinen, Tommi

AU - Vahasalo, Heidi

AU - Chukharev, Vladimir

AU - Tkachenko, Nikolai V.

AU - Efimov, Alexander

AU - Tolkki, A.

AU - Lehtivuori, Heli

AU - Lemmetyinen, Helge

PY - 2008

Y1 - 2008

N2 - Layers of poly(3-hexylthiophene), PHT, phenyl vinyl thiophene, PVT3, poly(p-phenylene-2,3′-bis(3,2′-diphenyl)-quinoxaline-7-7′-diyl), PPQ, and covalently linked porphyrin−fullerene donor−acceptor dyad, P−F, were deposited as various multilayer films, which then were used to study photoinduced electron transfer and photocurrent generation. The aim of the research was to clarify functioning of different energy and electron donating and accepting layers in charge transfer processes, which were initially created in a film consisting of parallel P−F molecules. The reactions were studied by means of time-correlated and steady-state fluorescence, time-resolved photovoltage, and electrochemical photocurrent measurements. The longest-lived charge-separated state and the highest efficiency of photocurrent generation were obtained for the multilayer structure of PHT|PVT3|porphyrin−fullerene. Porphyrin−fullerene dyads deposited parallel as the Langmuir –Blodgett film transfer electrons from porphyrin to fullerene yielding radical cation and anion moieties, respectively. The dyad on a PHT layer induces electron donation from PHT to the porphyrin cation. When PVT3 is deposited between the PHT and the P−F layers, it promotes both energy and electron transfer to the porphyrin moiety of the dyad, retards the recombination of the primary charge-separated state, and thus increases the photocurrent generation. PPQ was used as an electron acceptor from the fullerene radical anion, causing an increased lifetime of the charge separation.

AB - Layers of poly(3-hexylthiophene), PHT, phenyl vinyl thiophene, PVT3, poly(p-phenylene-2,3′-bis(3,2′-diphenyl)-quinoxaline-7-7′-diyl), PPQ, and covalently linked porphyrin−fullerene donor−acceptor dyad, P−F, were deposited as various multilayer films, which then were used to study photoinduced electron transfer and photocurrent generation. The aim of the research was to clarify functioning of different energy and electron donating and accepting layers in charge transfer processes, which were initially created in a film consisting of parallel P−F molecules. The reactions were studied by means of time-correlated and steady-state fluorescence, time-resolved photovoltage, and electrochemical photocurrent measurements. The longest-lived charge-separated state and the highest efficiency of photocurrent generation were obtained for the multilayer structure of PHT|PVT3|porphyrin−fullerene. Porphyrin−fullerene dyads deposited parallel as the Langmuir –Blodgett film transfer electrons from porphyrin to fullerene yielding radical cation and anion moieties, respectively. The dyad on a PHT layer induces electron donation from PHT to the porphyrin cation. When PVT3 is deposited between the PHT and the P−F layers, it promotes both energy and electron transfer to the porphyrin moiety of the dyad, retards the recombination of the primary charge-separated state, and thus increases the photocurrent generation. PPQ was used as an electron acceptor from the fullerene radical anion, causing an increased lifetime of the charge separation.

U2 - 10.1021/jp8003008

DO - 10.1021/jp8003008

M3 - Article

VL - 112

SP - 10256

EP - 10265

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 27

ER -