title: Effect of polycyclic aromatic hydrocarbons on detection sensitivity of ultratrace nitroaromatic compounds.
abstract: Polycyclic aromatic hydrocarbons (PAHs) with different numbers of pi-electrons and geometric symmetry of pi-systems, including anthracene, phenanthrene, pyrene, triphenylene, perylene, benzo[ghi]perylene, and coronene, were chosen to modify glassy carbon electrodes (GCEs) by self-assembling. The self-assembled monolayer of PAHs was investigated by STM and was used in the electrochemical detection of nitroaromatic compounds (NACs). The results indicate that PAH-modified GCE shows higher sensitivity to NACs than an unmodified one. Among the seven different PAHs, coronene-modified GCE exhibits the highest sensitivity to 2,4,6-trinitrotoluene and 1,3,5-trinitrobenzene.
authors.forename: Hong-Xia
authors.initials: HX
authors.lastname: Zhang
authors.forename: Qing
authors.initials: Q
authors.lastname: Chen
authors.forename: Rui
authors.initials: R
authors.lastname: Wen
authors.forename: Jin-Song
authors.initials: JS
authors.lastname: Hu
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Wan