期刊
TETRAHEDRON
卷 71, 期 38, 页码 6776-6783出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2015.07.035
关键词
Spiropyran; Merocyanine; Graphene; Carbon nanotubes; Zinc detection; Photochromic compounds
资金
- EPSRC [EP/G036101/1]
- EPSRC [EP/G036101/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G036101/1] Funding Source: researchfish
Synthesis of photo-switchable, Zn2+ sensitive hybrid materials was achieved by facile non-covalent functionalization of graphene, graphene oxide and carbon nanotubes with a pyrene-appended spiropyran. Solution phase binding studies, using UV-visible and fluorescence spectroscopy, indicated that the pyrene-spiropyran dyad was highly selective for Zn2+ over a range of potentially competitive cations and that binding occurred with 1:1 stoichiometry and a binding constant of K=1.4x 10(4) mol(-1) dm(3) at 295 K. Zn2+ binding was promoted by UV irradiation or in darkness and reversed upon irradiation with visible light. (C) 2015 Elsevier Ltd. All rights reserved.
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