Pyrene-phosphonate conjugate: Aggregation-induced enhanced emission, and selective Fe3+ ions sensing properties

Padghan, S, Bhosale, R, Bhosale, S, Antolasic, F, Al Kobaisi, M and Bhosale, S 2017, 'Pyrene-phosphonate conjugate: Aggregation-induced enhanced emission, and selective Fe3+ ions sensing properties', Molecules, vol. 22, no. 9, pp. 1-13.


Document type: Journal Article
Collection: Journal Articles

Title Pyrene-phosphonate conjugate: Aggregation-induced enhanced emission, and selective Fe3+ ions sensing properties
Author(s) Padghan, S
Bhosale, R
Bhosale, S
Antolasic, F
Al Kobaisi, M
Bhosale, S
Year 2017
Journal name Molecules
Volume number 22
Issue number 9
Start page 1
End page 13
Total pages 13
Publisher MDPI AG
Abstract A new pyrene-phosphonate colorimetric receptor 1 has been designed and synthesized in a one-step process via amide bond formation between pyrene butyric acid chloride and phosphonate-appended aniline. The pyrene-phosphonate receptor 1 showed aggregation-induced enhanced emission (AIEE) properties in water/acetonitrile (ACN) solutions. Dynamic light scattering (DLS) characterization revealed that the aggregates of receptor 1 at 80% water fraction have an average size of ?142 nm. Field emission scanning electron microscopy (FE-SEM) analysis confirmed the formation of spherical aggregates upon solvent evaporation. The sensing properties of receptor 1 were investigated by UV-vis, fluorescence emission spectroscopy, and other optical methods. Among the tested metal ions, receptor 1 is capable of recognizing the Fe3+ ion selectively. The changes in spectral measurements were explained on the basis of complex formation. The composition of receptor 1 and Fe3+ ions was determined by using Jobs plot and found to be 1:1. The receptor 1Fe3+ complex showed a reversible UV-vis response in the presence of EDTA.
Subject Medicinal and Biomolecular Chemistry not elsewhere classified
Keyword(s) AIEE
Colorimetric
Fluorescence
Optical
Pyrene-phosphonate
Sensor of Fe3+ ions
DOI - identifier 10.3390/molecules22091417
Copyright notice © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
ISSN 1420-3049
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