Plasmon-enhanced molecular fluorescence from an organic film in a tunnel junction

Hongwen Liu; Yutaka Ie; Tatsuo Yoshinobu; Yoshio Aso; Hiroshi Iwasaki; Ryusuke Nishitani

doi:10.1063/1.2171795

Plasmon-enhanced molecular fluorescence from an organic film in a tunnel junction

Hongwen Liu, Yutaka Ie, Tatsuo Yoshinobu, Yoshio Aso, Hiroshi Iwasaki, Ryusuke Nishitani

MEN - Biomedical Engineering

Research output: Contribution to journal › Review article › peer-review

40 Citations (Scopus)

Abstract

Scanning tunneling microscope (STM)-excited molecular fluorescence from H2 TBP porphyrin (H2 TBPP) thin films on Au (111), Ag, highly oriented pyrolytic graphite (HOPG), and indium tin oxide (ITO) surfaces has been investigated in air. Molecular fluorescence was observed from the H2 TBPP films on Au and Ag, but it was extremely weak or undetectable from films on HOPG and ITO. The maximum intensity of molecular fluorescence from H2 TBPPAg is at least 100 times stronger than that from H2 TBPPHOPG. Strong enhancement of molecular excitation by substrate surface plasmons is suggested for the STM-excited molecular fluorescence from H2 TBPP only on the noble metal substrates.

Original language	English
Article number	061901
Journal	Applied Physics Letters
Volume	88
Issue number	6
DOIs	https://doi.org/10.1063/1.2171795
Publication status	Published - 2006 Feb

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title = "Plasmon-enhanced molecular fluorescence from an organic film in a tunnel junction",

abstract = "Scanning tunneling microscope (STM)-excited molecular fluorescence from H2 TBP porphyrin (H2 TBPP) thin films on Au (111), Ag, highly oriented pyrolytic graphite (HOPG), and indium tin oxide (ITO) surfaces has been investigated in air. Molecular fluorescence was observed from the H2 TBPP films on Au and Ag, but it was extremely weak or undetectable from films on HOPG and ITO. The maximum intensity of molecular fluorescence from H2 TBPPAg is at least 100 times stronger than that from H2 TBPPHOPG. Strong enhancement of molecular excitation by substrate surface plasmons is suggested for the STM-excited molecular fluorescence from H2 TBPP only on the noble metal substrates.",

author = "Hongwen Liu and Yutaka Ie and Tatsuo Yoshinobu and Yoshio Aso and Hiroshi Iwasaki and Ryusuke Nishitani",

note = "Funding Information: This work is a part of 21st Century COE Program funded by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan.",

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doi = "10.1063/1.2171795",

language = "English",

volume = "88",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Plasmon-enhanced molecular fluorescence from an organic film in a tunnel junction

AU - Liu, Hongwen

AU - Ie, Yutaka

AU - Yoshinobu, Tatsuo

AU - Aso, Yoshio

AU - Iwasaki, Hiroshi

AU - Nishitani, Ryusuke

N1 - Funding Information: This work is a part of 21st Century COE Program funded by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan.

PY - 2006/2

Y1 - 2006/2

N2 - Scanning tunneling microscope (STM)-excited molecular fluorescence from H2 TBP porphyrin (H2 TBPP) thin films on Au (111), Ag, highly oriented pyrolytic graphite (HOPG), and indium tin oxide (ITO) surfaces has been investigated in air. Molecular fluorescence was observed from the H2 TBPP films on Au and Ag, but it was extremely weak or undetectable from films on HOPG and ITO. The maximum intensity of molecular fluorescence from H2 TBPPAg is at least 100 times stronger than that from H2 TBPPHOPG. Strong enhancement of molecular excitation by substrate surface plasmons is suggested for the STM-excited molecular fluorescence from H2 TBPP only on the noble metal substrates.

AB - Scanning tunneling microscope (STM)-excited molecular fluorescence from H2 TBP porphyrin (H2 TBPP) thin films on Au (111), Ag, highly oriented pyrolytic graphite (HOPG), and indium tin oxide (ITO) surfaces has been investigated in air. Molecular fluorescence was observed from the H2 TBPP films on Au and Ag, but it was extremely weak or undetectable from films on HOPG and ITO. The maximum intensity of molecular fluorescence from H2 TBPPAg is at least 100 times stronger than that from H2 TBPPHOPG. Strong enhancement of molecular excitation by substrate surface plasmons is suggested for the STM-excited molecular fluorescence from H2 TBPP only on the noble metal substrates.

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VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

M1 - 061901

ER -

Plasmon-enhanced molecular fluorescence from an organic film in a tunnel junction

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