Jump to main content
Jump to site search

Issue 18, 2011
Previous Article Next Article

Design and synthesis by ATRP of novel, water-insoluble, lineal copolymers and their application in the development of fluorescent and pH-sensing nanofibres made by electrospinning

Author affiliations

Abstract

In this work, reverse Atom Transfer Radical Polymerization (ATRP) was used for synthesising novel water-insoluble lineal copolymers which were used for designing new fluorescent and pH-sensitive, nanostructured films based on nanofibre mats made by electrospinning. The copolymers are based on the copolymerization of fluorescein o-acrylate (fluorescent pH-sensitive monomer) with methyl methacrylate and hydroxyl ethyl methacrylate (principal framework of the copolymers) and 3-methacryloylaminopropyl-trimethylammonium chloride (positively charged monomer) or 2-acrylamido-2-methylpropane sulfonic acid (negatively charged monomer). The electrostatic properties of these copolymers were investigated, and perfectly adjusted to maintain the complete insolubility of these materials in aqueous media. The copolymers were also characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (1H-NMR) spectroscopy and by triple detection gel permeation chromatography (GPC). The synthesised copolymers are soluble in organic solvents such as tetrahydrofuran, acetone, and dimethylformamide. These facts make them highly versatile and very good candidates for the preparation of novel nanostructured, optical pH-sensitive sensing phases produced by different techniques such as electrospinning, spin coating, deep coating, spray dry, spray coating, etc., and with different structures, morphologies, and geometries for many different applications. To demonstrate these claims, we used these copolymers for providing highly fluorescent pH-sensitive nanofibres made by electrospinning. The selected flow rates and voltages of the electrospinning configuration allowed the collection of dry fibres in nonwoven mats. The nanofibres were characterised by scanning electron microscopy (SEM) and fluorescence microscopy and the fibre mats were successfully used for pH-monitoring in two different pH ranges (6.5–8 and 8–10) showing reversibility, high sensitive and low response times.

Graphical abstract: Design and synthesis by ATRP of novel, water-insoluble, lineal copolymers and their application in the development of fluorescent and pH-sensing nanofibres made by electrospinning

Back to tab navigation

Supplementary files

Publication details

The article was received on 14 Jan 2011, accepted on 04 Mar 2011 and first published on 31 Mar 2011


Article type: Paper
DOI: 10.1039/C1JM10209E
Citation: J. Mater. Chem., 2011,21, 6742-6750
  •   Request permissions

    Design and synthesis by ATRP of novel, water-insoluble, lineal copolymers and their application in the development of fluorescent and pH-sensing nanofibres made by electrospinning

    A. L. Medina-Castillo, J. F. Fernandez-Sanchez, A. Segura-Carretero and A. Fernandez-Gutierrez, J. Mater. Chem., 2011, 21, 6742
    DOI: 10.1039/C1JM10209E

Search articles by author

Spotlight

Advertisements