Analysis of thermal molecular motion on substrate interface by time- And space-resolved fluorescence spectroscopy

Yu Tsuchimura, Keiji Tanaka, Toshihiko Nagamura

研究成果: 会議への寄与タイプ論文

抄録

Fluorescence lifetime for 6-(N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino) hexanoic acid (NBD) tagged to polystyrene (PS) in a film on a sapphire substrate was examined as a function of temperature. Picosecond pulse with the wavelength of 430 nm generated by a mode-locked Ti:Sapphire laser was irradiated from the substrate side. Information near the substrate interface was successfully extracted on the basis of evanescent wave excitation. The lifetime for NBD monotonically decreased with increasing temperature because the fractional amount of non-radiative pathways to the ground state for excited species increased with temperature. In general, as measuring temperature goes beyond a temperature at which molecular motion releases, the slope for the temperature-lifetime changes. In this experiment, the inflection point related to the slope was higher in the interfacial region than in the internal bulk phase of the film. Thus, it was concluded that chain mobility in the interfacial region was restricted in comparison with that in the bulk phase.

元の言語英語
ページ3842-3843
ページ数2
出版物ステータス出版済み - 12 1 2005
イベント54th SPSJ Symposium on Macromolecules - Yamagata, 日本
継続期間: 9 20 20059 22 2005

その他

その他54th SPSJ Symposium on Macromolecules
日本
Yamagata
期間9/20/059/22/05

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Fluorescence spectroscopy
Substrates
Sapphire
Temperature
Laser modes
Ground state
Hot Temperature
Amino acids
Polystyrenes
Fluorescence
Wavelength
Lasers
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Tsuchimura, Y., Tanaka, K., & Nagamura, T. (2005). Analysis of thermal molecular motion on substrate interface by time- And space-resolved fluorescence spectroscopy. 3842-3843. 論文発表場所 54th SPSJ Symposium on Macromolecules, Yamagata, 日本.

Analysis of thermal molecular motion on substrate interface by time- And space-resolved fluorescence spectroscopy. / Tsuchimura, Yu; Tanaka, Keiji; Nagamura, Toshihiko.

2005. 3842-3843 論文発表場所 54th SPSJ Symposium on Macromolecules, Yamagata, 日本.

研究成果: 会議への寄与タイプ論文

Tsuchimura, Y, Tanaka, K & Nagamura, T 2005, 'Analysis of thermal molecular motion on substrate interface by time- And space-resolved fluorescence spectroscopy', 論文発表場所 54th SPSJ Symposium on Macromolecules, Yamagata, 日本, 9/20/05 - 9/22/05 pp. 3842-3843.
Tsuchimura Y, Tanaka K, Nagamura T. Analysis of thermal molecular motion on substrate interface by time- And space-resolved fluorescence spectroscopy. 2005. 論文発表場所 54th SPSJ Symposium on Macromolecules, Yamagata, 日本.
Tsuchimura, Yu ; Tanaka, Keiji ; Nagamura, Toshihiko. / Analysis of thermal molecular motion on substrate interface by time- And space-resolved fluorescence spectroscopy. 論文発表場所 54th SPSJ Symposium on Macromolecules, Yamagata, 日本.2 p.
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