Benzimidazole derivatives: selective fluorescent chemosensors for the picogram detection of picric acid.
1,3,5-Tri(1H-benzo[d]imidazol-2-yl)benzene derivatives, as a new kind of fluorescent chemosensor for the detection of nitroaromatic explosives, are designed and synthesized by simple N-hydrocarbylation. Among 16 obtained compounds, compound 4g has the best capability for detection of picric acid (PA), having good selectivity and high sensitivity. The detection of PA with 4g solution-coated paper strips at the picogram level is developed. A simple, portable, and low-cost method is provided for detecting PA in solution and contact mode.
School of Chemistry and Environment, South China Normal University , Guangzhou, 510006, P. R. China.
Jin-Feng
JF
Xiong
Jian-Xiao
JX
Li
Guang-Zhen
GZ
Mo
Jing-Pei
JP
Huo
Jin-Yan
JY
Liu
Xiao-Yun
XY
Chen
Zhao-Yang
ZY
Wang