期刊
RSC ADVANCES
卷 4, 期 74, 页码 39351-39358出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra05843g
关键词
-
资金
- National Natural Science Foundation of China [21202133, 21174114, 21361023]
Detection of explosives is of utmost importance due to the threat to human security as a result of illegal transport and terrorist activities. Picric acid (PA) is widely used in the industrial and military fields, and is inadvertently able to contaminate the environment and groundwater, posing a threat to human health. Achieving the detection of explosives at the parts per billion (ppb) level using chemosensors is a great challenge. Herein, we demonstrate that triphenylamine based fluorescent chemosensors tris(4'-carbethoxybiphenyl) amine (TCEPA) and tris(40-carboxybiphenyl) amine (TCPA) exhibit superior detection capability for PA in solution state at the ppb level (40 ppb and 5 ppb respectively) and efficient quenching behaviours in the vapor phase at room temperature. In addition, fluorescent test strips have been prepared by dip-coating Thin Layer Chromatography (TCL) for trace detection of PA at the attogram level.
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