Issue 15, 2014

Solution-dispersed porous hyperbranched conjugated polymer nanoparticles for fluorescent sensing of TNT with enhanced sensitivity

Abstract

Solution-dispersed porous hyperbranched conjugated polymer nanoparticles (PHCPN) were prepared via Suzuki polymerization in a toluene-in-water miniemulsion system. PHCPN with an average particle size of 40–120 nm can disperse in common organic solvents and show blue emission. PHCPN exhibit a much larger specific surface area (133 m2 g−1), compared with the analogues, hyperbranched conjugated polymer nanoparticles (HCPN, 13 m2 g−1) with octyl chains and a linear conjugated polymer (LCP, 0 m2 g−1). Moreover, PHCPN have enhanced sensitivity in both a THF dispersion and the solid state due to facile diffusion of TNT inside the porous conjugated polymer network structure. Especially, PHCPN-coated indicating papers can visually and reversibly detect trace TNT particulates with a low detection limit of 0.5 ng mm−2, which is about 20-fold more sensitive than that of the linear conjugated polymer (LCP).

Graphical abstract: Solution-dispersed porous hyperbranched conjugated polymer nanoparticles for fluorescent sensing of TNT with enhanced sensitivity

Supplementary files

Article information

Article type
Paper
Submitted
28 Feb 2014
Accepted
24 Mar 2014
First published
25 Mar 2014

Polym. Chem., 2014,5, 4521-4525

Solution-dispersed porous hyperbranched conjugated polymer nanoparticles for fluorescent sensing of TNT with enhanced sensitivity

X. Wu, H. Li, B. Xu, H. Tong and L. Wang, Polym. Chem., 2014, 5, 4521 DOI: 10.1039/C4PY00305E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements