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Title

Probing Nanocavities with Proton-Transfer Fluorescence

AuthorsDouhal, Abderrazzak; Amat-Guerri, Francisco CSIC; Acuña, A. Ulises CSIC
KeywordsCyclodextrins
Fluorescence spectroscopy
Nanocavities
Rotational isomerzation
Proton transfer
Issue Date1997
PublisherWiley-VCH
CitationAngewandte Chemie International Edition in English 36, 1514-1516 (1997)
AbstractThe 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
URIhttp://hdl.handle.net/10261/11894
DOI10.1002/anie.199715141
ISSN0570-0833
Appears in Collections:(IQFR) Artículos
(IQOG) Artículos

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