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A highly selective "turn-on" fluorescent chemosensor based on hydroxy pyrene-hydrazone derivative for Zn 2+

Title
A highly selective "turn-on" fluorescent chemosensor based on hydroxy pyrene-hydrazone derivative for Zn 2+
Authors
Choi J.Y.Kim D.Yoon J.
Ewha Authors
윤주영
SCOPUS Author ID
윤주영scopus
Issue Date
2013
Journal Title
Dyes and Pigments
ISSN
0143-7208JCR Link
Citation
vol. 96, no. 1, pp. 176 - 179
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A new hydroxypyrene-based sensor 1 was designed and synthesized as a Zn 2+ selective colorimetric and fluorescent chemosensor. This chemosensor showed a new UV-vis absorption peak (λ max = 498 nm) with Zn 2+, which can be attributed to an internal charge transfer (ICT) mechanism. In addition, Zn 2+ induced a highly selective "turn-on" fluorescence enhancement at long wavelength (λ max = 588 nm) in a buffered system. A significant fluorescence enhancement was observed upon the addition of Zn 2+. The combination of two phenol groups on the pyrene and phenyl moieties as well as a conjugated hydrazone group can generate a binding pocket for Zn 2+. These results also demonstrate that 1-hydroxypyrene-2-carboaldehyde can be a unique platform to introduce various ligands for the colorimetric and fluorescent recognition of metal ions. © 2012 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.dyepig.2012.08.009
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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