Issue 10, 2001
From the journal:

Journal of the Chemical Society, Perkin Transactions 2

A series of polyrotaxanes containing α-cyclodextrin and naphthalene-modified α-cyclodextrin and solvent effects on the fluorescence quenching by terminal units

Makio Tamura,a   De Gaob  and  Aihiko Uenoa  

a Tokyo Institute of Technology, Department of Bioengineering, Graduate School of Bioscience and Biotechnology, 4259 Nagatsuta, Yokohama, Japan
E-mail: aueno@bio.titech.ac.jp
Fax: (+81)-45-924-5833

b Centro de Quimica Estrutural Complex 1, Instituto Superior Tecnica, Av. Rovisco Pais 1096, Lisboa Codex, Portugal
E-mail: degao1@yahoo.com

Abstract

Photoquenching systems were constructed using polyrotaxanes in which cyclodextrin (CD) rings of α-CD and 6-deoxy-6-(-naphthalene-2-sulfonyl)-α-cyclodextrin (NpCD) are threaded by a poly(ethylene glycol) chain with trinitrophenyl (acceptor) units at both ends (8–12). The effects of the component ratio of the polyrotaxanes on the naphthalene fluorescence quenching efficiency and energy migration between naphthalene units were examined by steady-state and time-resolved spectra and anisotropy measurements. The quenching efficiency of 8, which has the lowest content of NpCD, is larger than those of the polyrotaxanes with higher NpCD contents; however this tendency depends on the solvents. We explain the quenching mechanism of naphthalene fluorescence by the combination process of Förster type energy transfer and electron transfer to the trinitrophenyl units.

Graphical abstract: A series of polyrotaxanes containing α-cyclodextrin and naphthalene-modified α-cyclodextrin and solvent effects on the fluorescence quenching by terminal units

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/B100849H
Article type
Paper
Submitted
23 Jan 2001
Accepted
03 Jul 2001
First published
24 Aug 2001

J. Chem. Soc., Perkin Trans. 2, 2001, 2012-2021

Permissions

Request permissions

A series of polyrotaxanes containing α-cyclodextrin and naphthalene-modified α-cyclodextrin and solvent effects on the fluorescence quenching by terminal units

M. Tamura, D. Gao and A. Ueno, J. Chem. Soc., Perkin Trans. 2, 2001, 2012 DOI: 10.1039/B100849H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements