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ID 46211
本文ファイル
著者
Ikeda, Atsushi 大学院工学研究科 広大研究者総覧
Mae, Tomoya
Sugikawa, Kouta 大学院工学研究科 広大研究者総覧
Komaguchi, Kenji 大学院工学研究科 広大研究者総覧
Konishi, Toshifumi
Hirao, Takehiro 大学院理学研究科 広大研究者総覧
Haino, Takeharu 大学院理学研究科 広大研究者総覧
キーワード
cyclodextrins
fullerenes
host-guest systems
pseudorotaxanes
NMR spectroscopy
NDC
化学
抄録(英)
Fullerenes (C60 and C70) and several functionalized C60 derivatives can be encapsulated in two γ-cyclodextrins (γ-CDxs). Although intermolecular complexation–decomplexation exchange of γ-CDx is known to be very slow, the exchange rates have yet to be quantitatively measured. Herein, we determined that the pseudo-firstorder association and dissociation rate constants for the γ-CDx2•C70 complex were 4.3 and 0.6 s−1 at 23℃, respectively. In contrast, the intermolecular exchange rates for the γ-CDx2•C60 and C60 derivative complexes were slower than the time scale of exchange spectroscopy NMR experiments and the exchange rate constants were in the order of 10−4 s−1. Furthermore, a γ-CDx2•C60 derivative complex was shown to have different intermolecular exchange rates for the two γ-CDxs depending on steric hindrance from the substituent on the C60 derivative.
内容記述
This work was supported by JSPS KAKENHI Grant-in-Aid for Scientific Research (B) (Grant No. JP16H04133) and Grant-in-Aid for Challenging Exploratory Research (Grant No. JP16K13982).
掲載誌名
Chemistry Select
2巻
34号
開始ページ
11322
終了ページ
11327
出版年月日
2017-12-01
出版者
Wiley-VCH
ISSN
2365-6549
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
This is the accepted version of the following article: A. Ikeda, T. Mae, K. Sugikawa, K. Komaguchi, T. Konishi, T. Hirao, and T. Haino, Slow Intermolecular Complexation–Decomplexation Exchanges of Cyclodextrins in Fullerene and Its Derivative Complexes, Chemistry Select, 2, 11322–11327, 2017, which has been published in final form at http://doi.org/10.1002/slct.201702319. This article may be used for non-commercial purposes in accordance with Wiley Self-Archiving Policy.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
部局名
工学研究科
理学研究科
備考
Post-print version/PDF may be used in an institutional repository after an embargo period of 12 months.