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Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes

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Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes. / Niemi, Marja.

Tampere University of Technology, 2008. 51 p. (Tampere University of Technology. Publication; Vol. 732).

Research output: Book/ReportDoctoral thesisCollection of Articles

Harvard

Niemi, M 2008, Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes. Tampere University of Technology. Publication, vol. 732, Tampere University of Technology.

APA

Niemi, M. (2008). Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes. (Tampere University of Technology. Publication; Vol. 732). Tampere University of Technology.

Vancouver

Niemi M. Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes. Tampere University of Technology, 2008. 51 p. (Tampere University of Technology. Publication).

Author

Niemi, Marja. / Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes. Tampere University of Technology, 2008. 51 p. (Tampere University of Technology. Publication).

Bibtex - Download

@book{3584bf7334704dd0817ba9ac001b9eb4,
title = "Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes",
abstract = "Photoinduced electron transfer of several dyads and triads consisting of porphyrins or phthalocyanines as electron donors and fullerene as acceptor was studied. Efficient electron transfer was observed in the studied compounds due to two important approaches in the design of the molecular structure: (i) appropriate selection of the donor and acceptor moieties and (ii) controlled orientation and distance of the moieties achieved with two covalent linkers connecting the donor and acceptor. Mainly spectroscopic methods were used to determine the reaction schemes of the photoinduced reactions. Time-resolved spectroscopy revealed the transient states of electron transfer and it was confirmed that the intermediate exciplex state precedes the charge-separated state in all the studied compounds. Rate constants of the transitions and energies of the states were evaluated in both polar and non-polar solvents. To test the possibility to use the studied compounds in solid state photovoltaic devices, thin films with porphyrin-porphyrin-fullerene triad structures were attached on glass substrates covered with a transparent indium tin oxide layer. The triad structures were obtained by building successive self-assembled monolayers (SAM) of porphyrin and porphyrin-fullerene dyad on top of each other. Because of the presence of the secondary electron donor, the triad structures were found to enhance both photocurrent and photovoltage generation compared to the corresponding porphyrin-fullerene dyad SAM.",
author = "Marja Niemi",
note = "Awarding institution:Tampere University of Technology<br/>Submitter:Submitted by Kaisa Kulkki (kaisa.kulkki@tut.fi) on 2009-03-04T07:40:32Z No. of bitstreams: 1 niemi.pdf: 436378 bytes, checksum: ed60ab200cc4c09546aa7354a1012cfc (MD5)<br/>Submitter:Made available in DSpace on 2009-03-04T08:26:08Z (GMT). No. of bitstreams: 1 niemi.pdf: 436378 bytes, checksum: ed60ab200cc4c09546aa7354a1012cfc (MD5)<br/>Submitter:Approved for entry into archive by Soile Harjala(soile.harjala@tut.fi) on 2009-03-04T08:26:08Z (GMT) No. of bitstreams: 1 niemi.pdf: 436378 bytes, checksum: ed60ab200cc4c09546aa7354a1012cfc (MD5)",
year = "2008",
month = "5",
day = "30",
language = "English",
isbn = "978-952-15-1963-5",
series = "Tampere University of Technology. Publication",
publisher = "Tampere University of Technology",

}

RIS (suitable for import to EndNote) - Download

TY - BOOK

T1 - Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes

AU - Niemi, Marja

N1 - Awarding institution:Tampere University of Technology<br/>Submitter:Submitted by Kaisa Kulkki (kaisa.kulkki@tut.fi) on 2009-03-04T07:40:32Z No. of bitstreams: 1 niemi.pdf: 436378 bytes, checksum: ed60ab200cc4c09546aa7354a1012cfc (MD5)<br/>Submitter:Made available in DSpace on 2009-03-04T08:26:08Z (GMT). No. of bitstreams: 1 niemi.pdf: 436378 bytes, checksum: ed60ab200cc4c09546aa7354a1012cfc (MD5)<br/>Submitter:Approved for entry into archive by Soile Harjala(soile.harjala@tut.fi) on 2009-03-04T08:26:08Z (GMT) No. of bitstreams: 1 niemi.pdf: 436378 bytes, checksum: ed60ab200cc4c09546aa7354a1012cfc (MD5)

PY - 2008/5/30

Y1 - 2008/5/30

N2 - Photoinduced electron transfer of several dyads and triads consisting of porphyrins or phthalocyanines as electron donors and fullerene as acceptor was studied. Efficient electron transfer was observed in the studied compounds due to two important approaches in the design of the molecular structure: (i) appropriate selection of the donor and acceptor moieties and (ii) controlled orientation and distance of the moieties achieved with two covalent linkers connecting the donor and acceptor. Mainly spectroscopic methods were used to determine the reaction schemes of the photoinduced reactions. Time-resolved spectroscopy revealed the transient states of electron transfer and it was confirmed that the intermediate exciplex state precedes the charge-separated state in all the studied compounds. Rate constants of the transitions and energies of the states were evaluated in both polar and non-polar solvents. To test the possibility to use the studied compounds in solid state photovoltaic devices, thin films with porphyrin-porphyrin-fullerene triad structures were attached on glass substrates covered with a transparent indium tin oxide layer. The triad structures were obtained by building successive self-assembled monolayers (SAM) of porphyrin and porphyrin-fullerene dyad on top of each other. Because of the presence of the secondary electron donor, the triad structures were found to enhance both photocurrent and photovoltage generation compared to the corresponding porphyrin-fullerene dyad SAM.

AB - Photoinduced electron transfer of several dyads and triads consisting of porphyrins or phthalocyanines as electron donors and fullerene as acceptor was studied. Efficient electron transfer was observed in the studied compounds due to two important approaches in the design of the molecular structure: (i) appropriate selection of the donor and acceptor moieties and (ii) controlled orientation and distance of the moieties achieved with two covalent linkers connecting the donor and acceptor. Mainly spectroscopic methods were used to determine the reaction schemes of the photoinduced reactions. Time-resolved spectroscopy revealed the transient states of electron transfer and it was confirmed that the intermediate exciplex state precedes the charge-separated state in all the studied compounds. Rate constants of the transitions and energies of the states were evaluated in both polar and non-polar solvents. To test the possibility to use the studied compounds in solid state photovoltaic devices, thin films with porphyrin-porphyrin-fullerene triad structures were attached on glass substrates covered with a transparent indium tin oxide layer. The triad structures were obtained by building successive self-assembled monolayers (SAM) of porphyrin and porphyrin-fullerene dyad on top of each other. Because of the presence of the secondary electron donor, the triad structures were found to enhance both photocurrent and photovoltage generation compared to the corresponding porphyrin-fullerene dyad SAM.

M3 - Doctoral thesis

SN - 978-952-15-1963-5

T3 - Tampere University of Technology. Publication

BT - Photoinduced Electron Transfer in Dyads and Triads of Porphyrins, Phthalocyanines and Fullerenes

PB - Tampere University of Technology

ER -