Photophysical Study of a Self-Assembled Donor-Acceptor Two-Layer Film on TiO2

Kati Stranius; Lijo George; Alexander Efimov; Tero-Petri Ruoko; Juuso Pohjola; Nikolai V. Tkachenko

doi:10.1021/la5025873

Photophysical Study of a Self-Assembled Donor-Acceptor Two-Layer Film on TiO2

Kati Stranius^*
, Lijo George
, Alexander Efimov
, Tero-Petri Ruoko
, Juuso Pohjola
, Nikolai V. Tkachenko

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli › Tieteellinen › vertaisarvioitu

20 Sitaatiot (Scopus)

58 Lataukset (Pure)

Abstrakti

The self-assembled monolayer (SAM) technique was employed to fabricate a two-layer donoracceptor film on the surface of TiO2. The approach is based on using donor and acceptor compounds with anchoring groups of different lengths. The acceptor, a fullerene derivative, has a carboxyl anchor attached to the fullerene moiety via a short linker that places the fullerene close to the surface. The donor, a porphyrin derivative, is equipped with a long linker that can penetrate between the fullerenes and keep porphyrin on top of the fullerene layer. The two-layer fullereneporphyrin structures were deposited on a mesoporous film of TiO2 nanoparticles by immersing the TiO2 film sequentially into fullerene and porphyrin solutions. Transient absorption spectroscopy studies of the samples revealed that after the selective photoexcitation of porphyrin a fast (

Alkuperäiskieli	Englanti
Sivut	944-952
Sivumäärä	9
Julkaisu	Langmuir
Vuosikerta	31
Numero	3
DOI - pysyväislinkit	https://doi.org/10.1021/la5025873
Tila	Julkaistu - 27 tammik. 2015
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

We thank the Academy of Finland (grants nos. 263486 and 270308) and The National Doctoral Programme in Nano-science (NGS-NANO) for funding.

Julkaisufoorumi-taso

Jufo-taso 2

Pääsy asiakirjaan

10.1021/la5025873

Photophysical_study_post-print
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see 10.1021/la5025873.
Accepted author manuscript, 0,98 MB

http://urn.fi/URN:NBN:fi:tty-201612094852

Optinen spektroskopia, analysointi ja synteesi - Chemistry Labs
Ruoko, T.-P. (Yhteyshenkilö) & Efimov, A. (Yhteyshenkilö)
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abstract = "The self-assembled monolayer (SAM) technique was employed to fabricate a two-layer donoracceptor film on the surface of TiO2. The approach is based on using donor and acceptor compounds with anchoring groups of different lengths. The acceptor, a fullerene derivative, has a carboxyl anchor attached to the fullerene moiety via a short linker that places the fullerene close to the surface. The donor, a porphyrin derivative, is equipped with a long linker that can penetrate between the fullerenes and keep porphyrin on top of the fullerene layer. The two-layer fullereneporphyrin structures were deposited on a mesoporous film of TiO2 nanoparticles by immersing the TiO2 film sequentially into fullerene and porphyrin solutions. Transient absorption spectroscopy studies of the samples revealed that after the selective photoexcitation of porphyrin a fast (",

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AU - Pohjola, Juuso

AU - Tkachenko, Nikolai V.

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AB - The self-assembled monolayer (SAM) technique was employed to fabricate a two-layer donoracceptor film on the surface of TiO2. The approach is based on using donor and acceptor compounds with anchoring groups of different lengths. The acceptor, a fullerene derivative, has a carboxyl anchor attached to the fullerene moiety via a short linker that places the fullerene close to the surface. The donor, a porphyrin derivative, is equipped with a long linker that can penetrate between the fullerenes and keep porphyrin on top of the fullerene layer. The two-layer fullereneporphyrin structures were deposited on a mesoporous film of TiO2 nanoparticles by immersing the TiO2 film sequentially into fullerene and porphyrin solutions. Transient absorption spectroscopy studies of the samples revealed that after the selective photoexcitation of porphyrin a fast (

KW - PHOTOINDUCED ELECTRON-TRANSFER

KW - PORPHYRIN-FULLERENE DYADS

KW - SOLAR-CELLS

KW - CHARGE-SEPARATION

KW - STATE

KW - MONOLAYERS

KW - DYNAMICS

KW - ENERGY

KW - PERFORMANCE

KW - GENERATION

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DO - 10.1021/la5025873

M3 - Article

SN - 0743-7463

VL - 31

SP - 944

EP - 952

JO - Langmuir

JF - Langmuir

IS - 3

ER -

Photophysical Study of a Self-Assembled Donor-Acceptor Two-Layer Film on TiO2

Abstrakti

Rahoitus

Julkaisufoorumi-taso

Pääsy asiakirjaan

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Optinen spektroskopia, analysointi ja synteesi - Chemistry Labs

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