Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors

Yu Tsuchmura, Keiji Tanaka, Toshihiko Nagamura

研究成果: 会議への寄与タイプ論文

抄録

Lifetime for fluorescent probe, 6-(N-(7-nitrobenz- 2-oxa-1,3-diazol-4-yl) amino)hexanoic acid (NBD), mixed into polystyrene (PS) in a film on sapphire and S-LAH79 substrates was examined as a function of temperature. Picosecond pulse with the wavelength of 430 nm was irradiated into the film 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 relationship changes. Under the condition employed, the inflection point could be assigned to glass transition temperature (Tg). The value obtained at the interface was higher than the corresponding bulk value, and this inclination was remarkable closer to the interface. Thus, it was concluded that chain mobility in the interfacial region was restricted in comparison with that in the bulk phase, and chains closer to the substrate possess less mobility.

元の言語英語
ページ4292-4293
ページ数2
出版物ステータス出版済み - 12 1 2006
イベント55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, 日本
継続期間: 9 20 20069 22 2006

その他

その他55th Society of Polymer Science Japan Symposium on Macromolecules
日本
Toyama
期間9/20/069/22/06

Fingerprint

Fluorescence
Polymers
Substrates
Temperature
Sapphire
Ground state
Glass transition temperature
Amino acids
Polystyrenes
Wavelength

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Tsuchmura, Y., Tanaka, K., & Nagamura, T. (2006). Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors. 4292-4293. 論文発表場所 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 日本.

Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors. / Tsuchmura, Yu; Tanaka, Keiji; Nagamura, Toshihiko.

2006. 4292-4293 論文発表場所 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 日本.

研究成果: 会議への寄与タイプ論文

Tsuchmura, Y, Tanaka, K & Nagamura, T 2006, 'Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors' 論文発表場所 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 日本, 9/20/06 - 9/22/06, pp. 4292-4293.
Tsuchmura Y, Tanaka K, Nagamura T. Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors. 2006. 論文発表場所 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 日本.
Tsuchmura, Yu ; Tanaka, Keiji ; Nagamura, Toshihiko. / Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors. 論文発表場所 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 日本.2 p.
@conference{7a0913000d19435dabc702ac7a7ab3c3,
title = "Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors",
abstract = "Lifetime for fluorescent probe, 6-(N-(7-nitrobenz- 2-oxa-1,3-diazol-4-yl) amino)hexanoic acid (NBD), mixed into polystyrene (PS) in a film on sapphire and S-LAH79 substrates was examined as a function of temperature. Picosecond pulse with the wavelength of 430 nm was irradiated into the film 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 relationship changes. Under the condition employed, the inflection point could be assigned to glass transition temperature (Tg). The value obtained at the interface was higher than the corresponding bulk value, and this inclination was remarkable closer to the interface. Thus, it was concluded that chain mobility in the interfacial region was restricted in comparison with that in the bulk phase, and chains closer to the substrate possess less mobility.",
author = "Yu Tsuchmura and Keiji Tanaka and Toshihiko Nagamura",
year = "2006",
month = "12",
day = "1",
language = "English",
pages = "4292--4293",
note = "55th Society of Polymer Science Japan Symposium on Macromolecules ; Conference date: 20-09-2006 Through 22-09-2006",

}

TY - CONF

T1 - Time and space-resolved fluorescence study on interfacial glass transition temperature of polymer and its responsible factors

AU - Tsuchmura, Yu

AU - Tanaka, Keiji

AU - Nagamura, Toshihiko

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Lifetime for fluorescent probe, 6-(N-(7-nitrobenz- 2-oxa-1,3-diazol-4-yl) amino)hexanoic acid (NBD), mixed into polystyrene (PS) in a film on sapphire and S-LAH79 substrates was examined as a function of temperature. Picosecond pulse with the wavelength of 430 nm was irradiated into the film 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 relationship changes. Under the condition employed, the inflection point could be assigned to glass transition temperature (Tg). The value obtained at the interface was higher than the corresponding bulk value, and this inclination was remarkable closer to the interface. Thus, it was concluded that chain mobility in the interfacial region was restricted in comparison with that in the bulk phase, and chains closer to the substrate possess less mobility.

AB - Lifetime for fluorescent probe, 6-(N-(7-nitrobenz- 2-oxa-1,3-diazol-4-yl) amino)hexanoic acid (NBD), mixed into polystyrene (PS) in a film on sapphire and S-LAH79 substrates was examined as a function of temperature. Picosecond pulse with the wavelength of 430 nm was irradiated into the film 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 relationship changes. Under the condition employed, the inflection point could be assigned to glass transition temperature (Tg). The value obtained at the interface was higher than the corresponding bulk value, and this inclination was remarkable closer to the interface. Thus, it was concluded that chain mobility in the interfacial region was restricted in comparison with that in the bulk phase, and chains closer to the substrate possess less mobility.

UR - http://www.scopus.com/inward/record.url?scp=33846138980&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846138980&partnerID=8YFLogxK

M3 - Paper

SP - 4292

EP - 4293

ER -