Fluorescence fiber-optic turn-on detection of trace hydrazine vapor with dicyanovinyl-functionalized triazatruxene-based hyperbranched conjugated polymer nanoparticles

Abstract

A solution-dispersible hyperbranched conjugated polymer nanoparticle material based on triazatruxene, TATHBP-DCV, was readily prepared through Suzuki coupling polymerization in a miniemulsion, followed by post-functionalization of its numerous terminal aldehyde groups into dicyanovinyl groups. Efficient energy transfer from the polymer core to the peripheral terminal units quenched the emission of TATHBP-DCV, which was turned on in hydrazine vapor. In particular, fluorescence fiber-optic detection of hydrazine vapor was realized with a limit of detection down to 1.1 mg m⁻³ in 5 minutes.