論文

査読有り
2019年9月10日

pMAIRS Analysis on Chain-End Functionalization of Densely Grafted, Concentrated Polymer Brushes

Macromolecules
  • Keita Sakakibara
  • ,
  • Kosuke Nishiumi
  • ,
  • Takafumi Shimoaka
  • ,
  • Takeshi Hasegawa
  • ,
  • Yoshinobu Tsujii

52
17
開始ページ
6673
終了ページ
6682
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.macromol.9b01149
出版者・発行元
American Chemical Society (ACS)

The degree of chain-end functionality in a densely grafted, concentrated polymer brush is a critical parameter. In this study, p-polarized multiple-angle incidence resolution spectrometry (pMAIRS) technique was applied to monitor the emergence and disappearance of substituted azide (N-3) at the chain ends of polymer brushes, allowing the accurate determination of the azide density and the click reaction efficacy. The peak separation of the N-3 absorption bands in the pMAIRS spectra showed that azide substitution occurred not only at the brush ends but also at the underlying initiators that did not react during surface-initiated atom transfer radical polymerization. Hence, the density of each type of azide group and the efficiencies of the azidation and click reaction could successfully be estimated. Furthermore, a chain-end-selective click reaction was demonstrated for the azide- functionalized polymethacrylate-type polymer brushes based on size exclusion effects and polarity differences. Thus, the pMAIRS method provides important quantitative information that can expand the applications of chain-end functionalized polymer brushes.

リンク情報
DOI
https://doi.org/10.1021/acs.macromol.9b01149
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000485832000032&DestApp=WOS_CPL
URL
https://pubs.acs.org/doi/pdf/10.1021/acs.macromol.9b01149
ID情報
  • DOI : 10.1021/acs.macromol.9b01149
  • ISSN : 0024-9297
  • eISSN : 1520-5835
  • Web of Science ID : WOS:000485832000032

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