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Pyrene-Phosphonate Conjugate: Aggregation-Induced Enhanced Emission, and Selective Fe3+ Ions Sensing Properties.

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 Job's plot and found to be 1:1. The receptor 1-Fe3+ complex showed a reversible UV-vis response in the presence of EDTA.

SUBMITTER: Padghan SD 

PROVIDER: S-EPMC6151600 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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Pyrene-Phosphonate Conjugate: Aggregation-Induced Enhanced Emission, and Selective Fe<sup>3+</sup> Ions Sensing Properties.

Padghan Sachin D SD   Bhosale Rajesh S RS   Bhosale Sidhanath V SV   Antolasic Frank F   Al Kobaisi Mohammad M   Bhosale Sheshanath V SV  

Molecules (Basel, Switzerland) 20170829 9

A new pyrene-phosphonate colorimetric receptor <b>1</b> 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 <b>1</b> showed aggregation-induced enhanced emission (AIEE) properties in water/acetonitrile (ACN) solutions. Dynamic light scattering (DLS) characterization revealed that the aggregates of receptor <b>1</b> at 80% water fraction have an average size of ≈142  ...[more]

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