Hydration of poly(N-isopropylacrylamide) brushes on micro-silica beads measured by a fluorescent probe

Yusuke Hattori; Kenichi Nagase; Jun Kobayashi; Akihiko Kikuchi; Yoshikatsu Akiyama; Hideko Kanazawa; Teruo Okano

doi:10.1016/j.cplett.2010.03.082

Hydration of poly(N-isopropylacrylamide) brushes on micro-silica beads measured by a fluorescent probe

Yusuke Hattori, Kenichi Nagase, Jun Kobayashi, Akihiko Kikuchi, Yoshikatsu Akiyama, Hideko Kanazawa, Teruo Okano

School of Pharmaceutical Sciences

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

8 Citations (Scopus)

Abstract

Hydration of poly(N-isopropylacrylamide) brushes on silica micro-beads was investigated using a fluorescent probe method. The free ends, the bottom, and the random of brushes were labeled with dansyl group. The emission spectra at the thin brushes were reduced with increasing temperature regardless of their labeling locations. At the free ends of thick brushes, the emission intensity was enhanced at 500 nm and reduced at 455 nm by heating, which was corresponding to the local micro-environmental change around the free ends. The spectral shift was speculated to be due to the enhancement of the flexibility and the hydration of thick brushes.

Original language	English
Pages (from-to)	193-198
Number of pages	6
Journal	Chemical Physics Letters
Volume	491
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2010.03.082
Publication status	Published - 2010 May 17

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/j.cplett.2010.03.082

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abstract = "Hydration of poly(N-isopropylacrylamide) brushes on silica micro-beads was investigated using a fluorescent probe method. The free ends, the bottom, and the random of brushes were labeled with dansyl group. The emission spectra at the thin brushes were reduced with increasing temperature regardless of their labeling locations. At the free ends of thick brushes, the emission intensity was enhanced at 500 nm and reduced at 455 nm by heating, which was corresponding to the local micro-environmental change around the free ends. The spectral shift was speculated to be due to the enhancement of the flexibility and the hydration of thick brushes.",

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AU - Hattori, Yusuke

AU - Nagase, Kenichi

AU - Kobayashi, Jun

AU - Kikuchi, Akihiko

AU - Akiyama, Yoshikatsu

AU - Kanazawa, Hideko

AU - Okano, Teruo

PY - 2010/5/17

Y1 - 2010/5/17

N2 - Hydration of poly(N-isopropylacrylamide) brushes on silica micro-beads was investigated using a fluorescent probe method. The free ends, the bottom, and the random of brushes were labeled with dansyl group. The emission spectra at the thin brushes were reduced with increasing temperature regardless of their labeling locations. At the free ends of thick brushes, the emission intensity was enhanced at 500 nm and reduced at 455 nm by heating, which was corresponding to the local micro-environmental change around the free ends. The spectral shift was speculated to be due to the enhancement of the flexibility and the hydration of thick brushes.

AB - Hydration of poly(N-isopropylacrylamide) brushes on silica micro-beads was investigated using a fluorescent probe method. The free ends, the bottom, and the random of brushes were labeled with dansyl group. The emission spectra at the thin brushes were reduced with increasing temperature regardless of their labeling locations. At the free ends of thick brushes, the emission intensity was enhanced at 500 nm and reduced at 455 nm by heating, which was corresponding to the local micro-environmental change around the free ends. The spectral shift was speculated to be due to the enhancement of the flexibility and the hydration of thick brushes.

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Hydration of poly(N-isopropylacrylamide) brushes on micro-silica beads measured by a fluorescent probe

Abstract

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