A Novel Nanofibrous Film Chemosensor for Highly Selective and Sensitive Optical Signaling of Zn2+

Chen Zhou,Heng Liu

doi:10.21577/0103-5053.20170036

Chen Zhou, Heng Liu

Open Access

https://doi.org/10.21577/0103-5053.20170036

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Abstract

A novel nanofibrous film chemosensor was fabricated by copolymerization and electrospinning, which exhibited signaling behaviors for Zn2+. Upon addition of Zn2+, the sensor film exhibited obvious fluorescence enhancement in a linear fashion. Owing to a larger surface area and high permeability, the selectivity and sensitivity of the nanofibrous film for Zn2+ were satisfactory and achieving a limit of detection of 1.95 × 10-5 mol L-1. Moreover, this material could serve as an adsorbent for Zn2+, as the adsorption capacity was 11.45 mg of Zn2+ ions per gram of nanofibrous film.

Highlights

It is well known that Zn2+ is actively involved in numerous physiological processes, such as brain function and pathology, gene transcription, immune function and mammalian reproduction.[1,2] Zn2+ is the second most abundant transition metal ion in human body after iron, so development of metal ion chemosensors for Zn2+ has received considerable attention.[3]
In order to achieve the objective, we intend to utilize electrospinning technology to fabricate nanofibrous film, which guaranteed the probes to be loaded in the solid substrate, its porous network structure can greatly improve the diffusion velocity of interiors inside nanofibrous film.[8]
To confirm that fluorophore moiety was successfully grafted onto poly (MMA-co-HAB), Fourier transformed infrared spectroscopy (FTIR) was used

Summary

Introduction

It is well known that Zn2+ is actively involved in numerous physiological processes, such as brain function and pathology, gene transcription, immune function and mammalian reproduction.[1,2] Zn2+ is the second most abundant transition metal ion in human body after iron, so development of metal ion chemosensors for Zn2+ has received considerable attention.[3]. (MMA-co-Sal) (1.00 g) was dissolved in DMF (5.50 g) to prepare the precursor solution with a concentration of 15.4 wt.%, the solution was kept stirring for 24 h at room temperature. Response of poly (MMA-co-Sal) nanofibrous film to Zn2+ ions

Results

Conclusion