Organization of supramolecular assemblies of fullerene, porphyrin and fluorescein dye derivatives on TiO2 nanoparticles for light energy conversion

Taku Hasobe; Shigeki Hattori; Prashant V. Kamat; Yasuteru Urano; Naoki Umezawa; Tetsuo Nagano; Shunichi Fukuzumi

doi:10.1016/j.chemphys.2005.06.035

Organization of supramolecular assemblies of fullerene, porphyrin and fluorescein dye derivatives on TiO₂ nanoparticles for light energy conversion

Taku Hasobe, Shigeki Hattori, Prashant V. Kamat, Yasuteru Urano, Naoki Umezawa, Tetsuo Nagano, Shunichi Fukuzumi

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

TiO₂ nanoparticles were modified with a porphyrin derivative, 5-[4-benzoic acid]-10,15,20-tris[3,5-di-tert-butylphenyl]-21H,23H-porphyrin (H₂P-COOH), and fluorescein derivatives, 9-[2-(3-carboxy-9,10- diphenyl)anthryl]-2,7-difluoro-6-hydroxy-3H-xanthen-3-one (DPAX-COOH) and 2′,7′-difluorofluorescein (FL-COOH). The dye-modified TiO ₂ nanoparticles were deposited on nanostructured OTE/SnO₂ (OTE: optically transparent electrodes) together with nanoclusters of fullerene (C₆₀) from acetonitrile/toluene (3:1, v/v) using an electrophoretic deposition technique. The dye-modified TiO₂ composite electrodes [OTE/SnO₂/(dye + C₆₀)_n] have broad as well as high absorbance properties in the visible region, exhibiting the photo response under visible light excitation using I3-/I- redox couple. The incident photon to photocurrent efficiency (IPCE) for these electrodes increases in order: OTE/SnO₂/(H₂P)_n < OTE/SnO ₂/(H₂P-COO-TiO₂)_n < OTE/SnO ₂/(H₂P-COO-TiO₂ + C₆₀). The IPCE value can be further improved by replacing H₂P-COOH with a fluorescein derivative containing an electron donor moiety: DPAX-COOH (DPA: diphenylanthracene). The maximum IPCE value (42%) is obtained for OTE/SnO ₂/(DPAX-COO-TiO₂ + C₆₀)_n under the bias of 0.2 V vs. SCE.

Original language	English
Pages (from-to)	243-252
Number of pages	10
Journal	Chemical Physics
Volume	319
Issue number	1-3
DOIs	https://doi.org/10.1016/j.chemphys.2005.06.035
State	Published - 7 Dec 2005

Bibliographical note

Funding Information:
This work was partially supported by a Grant-in-Aid (No. 16205020) and by a COE program of Osaka University (Integrated Ecochemistry) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. PVK acknowledges the support from the Office of Basic Energy Science of the US Department of the Energy. This is contribution No. NDRL 4608 from the Notre Dame Radiation Laboratory and from Osaka University. We are grateful to Dr. Yuji Wada, Osaka University, for helping preparation of TiO 2 nanoparticles modified with dyes.

Keywords

Fluorescein
Fullerene
Light energy conversion
Porphyrin
TiO nanoparticles

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10.1016/j.chemphys.2005.06.035

Cite this

@article{2ef1639247f549d1a6f84741cfaedbaf,

title = "Organization of supramolecular assemblies of fullerene, porphyrin and fluorescein dye derivatives on TiO2 nanoparticles for light energy conversion",

abstract = "TiO2 nanoparticles were modified with a porphyrin derivative, 5-[4-benzoic acid]-10,15,20-tris[3,5-di-tert-butylphenyl]-21H,23H-porphyrin (H2P-COOH), and fluorescein derivatives, 9-[2-(3-carboxy-9,10- diphenyl)anthryl]-2,7-difluoro-6-hydroxy-3H-xanthen-3-one (DPAX-COOH) and 2′,7′-difluorofluorescein (FL-COOH). The dye-modified TiO 2 nanoparticles were deposited on nanostructured OTE/SnO2 (OTE: optically transparent electrodes) together with nanoclusters of fullerene (C60) from acetonitrile/toluene (3:1, v/v) using an electrophoretic deposition technique. The dye-modified TiO2 composite electrodes [OTE/SnO2/(dye + C60)n] have broad as well as high absorbance properties in the visible region, exhibiting the photo response under visible light excitation using I3-/I- redox couple. The incident photon to photocurrent efficiency (IPCE) for these electrodes increases in order: OTE/SnO2/(H2P)n < OTE/SnO 2/(H2P-COO-TiO2)n < OTE/SnO 2/(H2P-COO-TiO2 + C60). The IPCE value can be further improved by replacing H2P-COOH with a fluorescein derivative containing an electron donor moiety: DPAX-COOH (DPA: diphenylanthracene). The maximum IPCE value (42%) is obtained for OTE/SnO 2/(DPAX-COO-TiO2 + C60)n under the bias of 0.2 V vs. SCE.",

keywords = "Fluorescein, Fullerene, Light energy conversion, Porphyrin, TiO nanoparticles",

author = "Taku Hasobe and Shigeki Hattori and Kamat, {Prashant V.} and Yasuteru Urano and Naoki Umezawa and Tetsuo Nagano and Shunichi Fukuzumi",

note = "Funding Information: This work was partially supported by a Grant-in-Aid (No. 16205020) and by a COE program of Osaka University (Integrated Ecochemistry) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. PVK acknowledges the support from the Office of Basic Energy Science of the US Department of the Energy. This is contribution No. NDRL 4608 from the Notre Dame Radiation Laboratory and from Osaka University. We are grateful to Dr. Yuji Wada, Osaka University, for helping preparation of TiO 2 nanoparticles modified with dyes.",

year = "2005",

month = dec,

day = "7",

doi = "10.1016/j.chemphys.2005.06.035",

language = "English",

volume = "319",

pages = "243--252",

journal = "Chemical Physics",

issn = "0301-0104",

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number = "1-3",

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T1 - Organization of supramolecular assemblies of fullerene, porphyrin and fluorescein dye derivatives on TiO2 nanoparticles for light energy conversion

AU - Hasobe, Taku

AU - Hattori, Shigeki

AU - Kamat, Prashant V.

AU - Urano, Yasuteru

AU - Umezawa, Naoki

AU - Nagano, Tetsuo

AU - Fukuzumi, Shunichi

N1 - Funding Information: This work was partially supported by a Grant-in-Aid (No. 16205020) and by a COE program of Osaka University (Integrated Ecochemistry) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. PVK acknowledges the support from the Office of Basic Energy Science of the US Department of the Energy. This is contribution No. NDRL 4608 from the Notre Dame Radiation Laboratory and from Osaka University. We are grateful to Dr. Yuji Wada, Osaka University, for helping preparation of TiO 2 nanoparticles modified with dyes.

PY - 2005/12/7

Y1 - 2005/12/7

N2 - TiO2 nanoparticles were modified with a porphyrin derivative, 5-[4-benzoic acid]-10,15,20-tris[3,5-di-tert-butylphenyl]-21H,23H-porphyrin (H2P-COOH), and fluorescein derivatives, 9-[2-(3-carboxy-9,10- diphenyl)anthryl]-2,7-difluoro-6-hydroxy-3H-xanthen-3-one (DPAX-COOH) and 2′,7′-difluorofluorescein (FL-COOH). The dye-modified TiO 2 nanoparticles were deposited on nanostructured OTE/SnO2 (OTE: optically transparent electrodes) together with nanoclusters of fullerene (C60) from acetonitrile/toluene (3:1, v/v) using an electrophoretic deposition technique. The dye-modified TiO2 composite electrodes [OTE/SnO2/(dye + C60)n] have broad as well as high absorbance properties in the visible region, exhibiting the photo response under visible light excitation using I3-/I- redox couple. The incident photon to photocurrent efficiency (IPCE) for these electrodes increases in order: OTE/SnO2/(H2P)n < OTE/SnO 2/(H2P-COO-TiO2)n < OTE/SnO 2/(H2P-COO-TiO2 + C60). The IPCE value can be further improved by replacing H2P-COOH with a fluorescein derivative containing an electron donor moiety: DPAX-COOH (DPA: diphenylanthracene). The maximum IPCE value (42%) is obtained for OTE/SnO 2/(DPAX-COO-TiO2 + C60)n under the bias of 0.2 V vs. SCE.

AB - TiO2 nanoparticles were modified with a porphyrin derivative, 5-[4-benzoic acid]-10,15,20-tris[3,5-di-tert-butylphenyl]-21H,23H-porphyrin (H2P-COOH), and fluorescein derivatives, 9-[2-(3-carboxy-9,10- diphenyl)anthryl]-2,7-difluoro-6-hydroxy-3H-xanthen-3-one (DPAX-COOH) and 2′,7′-difluorofluorescein (FL-COOH). The dye-modified TiO 2 nanoparticles were deposited on nanostructured OTE/SnO2 (OTE: optically transparent electrodes) together with nanoclusters of fullerene (C60) from acetonitrile/toluene (3:1, v/v) using an electrophoretic deposition technique. The dye-modified TiO2 composite electrodes [OTE/SnO2/(dye + C60)n] have broad as well as high absorbance properties in the visible region, exhibiting the photo response under visible light excitation using I3-/I- redox couple. The incident photon to photocurrent efficiency (IPCE) for these electrodes increases in order: OTE/SnO2/(H2P)n < OTE/SnO 2/(H2P-COO-TiO2)n < OTE/SnO 2/(H2P-COO-TiO2 + C60). The IPCE value can be further improved by replacing H2P-COOH with a fluorescein derivative containing an electron donor moiety: DPAX-COOH (DPA: diphenylanthracene). The maximum IPCE value (42%) is obtained for OTE/SnO 2/(DPAX-COO-TiO2 + C60)n under the bias of 0.2 V vs. SCE.

KW - Fluorescein

KW - Fullerene

KW - Light energy conversion

KW - Porphyrin

KW - TiO nanoparticles

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DO - 10.1016/j.chemphys.2005.06.035

M3 - Article

AN - SCOPUS:28644435678

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JO - Chemical Physics

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