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Title: | Probing Nanocavities with Proton-Transfer Fluorescence |
Authors: | Douhal, Abderrazzak; Amat-Guerri, Francisco CSIC; Acuña, A. Ulises CSIC | Keywords: | Cyclodextrins Fluorescence spectroscopy Nanocavities Rotational isomerzation Proton transfer |
Issue Date: | 1997 | Publisher: | Wiley-VCH | Citation: | Angewandte Chemie International Edition in English 36, 1514-1516 (1997) | Abstract: | The ability of cyciodextrins (CD) to encapsulate functional compounds such as emitting dyes has led to intensive studies of their inclusion complexes.[1-7] In these species proton transfer,[ [8,9] energy transfer,[4,5] and bond rotation"[10] can give rise to new molecular forms of the sequestered dye with different physicochemical properties. Here we describe the light-induced tautomerism of a fluorophore encapsulated by α-,β-, or у CD, for which both proton transfer and conformational changes cause spectral shifts that are directly related to the size of the CD cavity. The color change of the fluorescence provides a simple way of exploring and quantifying subtle details of the induced fit and cavity diameter. | Publisher version (URL): | http://dx.doi.org/10.1002/anie.199715141 | URI: | http://hdl.handle.net/10261/11894 | DOI: | 10.1002/anie.199715141 | ISSN: | 0570-0833 |
Appears in Collections: | (IQFR) Artículos (IQOG) Artículos |
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