Time- And space-resolved fluorescence study on interfacial mobility of polymers

Keiji Tanaka, Yu Tsuchimura, Kei Ichi Akabori, Fuyuki Ito, Toshihiko Nagamura

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Segmental mobility of a typical amorphous polymer, polystyrene, at the interface with a solid substrate was examined noninvasively by fluorescence lifetime measurement using evanescent wave excitation. Glass transition temperature (Tg) was discernibly higher at the interface than in the bulk. Measurements at different incident angles of excitation pulses revealed that Tg became higher the closer to the interface. This is the observation for a Tg gradient of polymers at the interface.

Original languageEnglish
Article number061916
JournalApplied Physics Letters
Volume89
Issue number6
DOIs
Publication statusPublished - Aug 21 2006

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fluorescence
polymers
evanescent waves
wave excitation
glass transition temperature
polystyrene
life (durability)
gradients
pulses
excitation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Time- And space-resolved fluorescence study on interfacial mobility of polymers. / Tanaka, Keiji; Tsuchimura, Yu; Akabori, Kei Ichi; Ito, Fuyuki; Nagamura, Toshihiko.

In: Applied Physics Letters, Vol. 89, No. 6, 061916, 21.08.2006.

Research output: Contribution to journalArticle

Tanaka, Keiji ; Tsuchimura, Yu ; Akabori, Kei Ichi ; Ito, Fuyuki ; Nagamura, Toshihiko. / Time- And space-resolved fluorescence study on interfacial mobility of polymers. In: Applied Physics Letters. 2006 ; Vol. 89, No. 6.
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