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Open AccessArticle

Theoretical and Experimental: The Synthetic and Anion-Binding Properties of Tripodal Salicylaldehyde Derivatives

1
School of Basic Medicine, Zhengzhou University, Zhengzhou 450052, China
2
Life Science and Technology College, Xinxiang Medical University, Xinxiang 453003, China
*
Author to whom correspondence should be addressed.
Academic Editors: Jong Seung Kim and Min Hee Lee
Sensors 2016, 16(5), 733; https://doi.org/10.3390/s16050733
Received: 2 March 2016 / Revised: 9 May 2016 / Accepted: 12 May 2016 / Published: 19 May 2016
(This article belongs to the Special Issue Colorimetric and Fluorescent Sensor)
A series of colorimetric anion probes 1–6 containing OH and NO2 groups were synthesized, and their recognition properties toward various anions were investigated by visual observation, ultraviolet–visible spectroscopy, fluorescence, 1H nuclear magnetic resonance titration spectra and theoretical investigation. Nanomaterials of three compounds 2–4 were prepared successfully. Four compounds 3–6 that contain electron-withdrawing substituents showed a high binding ability for AcO. The host–guest complex formed through a 1:1 binding ratio, and color changes were detectable during the recognition process. Theoretical investigation analysis revealed that an intramolecular hydrogen bond existed in the structures of compounds and the roles of molecular frontier orbitals in molecular interplay. These studies suggested that this series of compounds could be used as colorimetric probes to detect of AcO. View Full-Text
Keywords: molecular probe; tripodal compound; theoretical investigation; colorimetric binding; nano-material molecular probe; tripodal compound; theoretical investigation; colorimetric binding; nano-material
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MDPI and ACS Style

Xu, Z.-J.; Zhang, L.-R. Theoretical and Experimental: The Synthetic and Anion-Binding Properties of Tripodal Salicylaldehyde Derivatives. Sensors 2016, 16, 733.

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