Ultra-sensitive detection of explosives in solution and film as well as the development of thicker film effectiveness by tetraphenylethene moiety in AIE active fluorescent conjugated polymer

doi:10.1039/c4py00673a

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	Ultra-sensitive detection of explosives in solution and film as well as the development of thicker film effectiveness by tetraphenylethene moiety in AIE active fluorescent conjugated polymer
	Ghosh, Khama Rani 1; Saha, Sukanta Kumar 1; Wang, Zhi Yuan 1,2
刊名	POLYMER CHEMISTRY
	2014-10-07
卷号	5 期号:19 页码:5638-5643
ISSN号	1759-9954
DOI	10.1039/c4py00673a
英文摘要	A fluorescence sensory polymer (P1) consisting of pentiptycene and tetraphenylethene (TPE) units linked by acetylene was synthesized for direct detection of explosives in solution and air. At the same time, the effectiveness of thicker film in the presence of the TPE moiety for the detection of explosives was investigated. Fluorescence turn-off detection of picric acid (PA) was carried out in H2O-THF mixture containing 90% water, where the TPE units of the polymer are in a highly emissive aggregation state. Polymer P1 exhibits a fluorescence quenching response of 24% with addition of 4.36 x 10(-8) M PA and 98% with the PA concentration at 4.7 x 10(-6) M. For a thinner film (4 nm) of P1 after exposure to dinitrotoluene for 10 s, the fluorescence intensity dropped 48% and it continued to drop 97% after 300 s, the corresponding values being 29% and 72% for thicker film (75 nm), respectively. These results indicate that P1 is a promising material for direct detection of nitro explosives in air and solution at ppb levels, and the TPE moiety inside the polymer improves the sensitivity and effectiveness of thicker films.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000342481200014
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51979]
专题	中国科学院化学研究所
通讯作者	Wang, Zhi Yuan
作者单位	1.Carleton Univ, Dept Chem, Ottawa, ON K1S 5B7, Canada 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Ghosh, Khama Rani,Saha, Sukanta Kumar,Wang, Zhi Yuan. Ultra-sensitive detection of explosives in solution and film as well as the development of thicker film effectiveness by tetraphenylethene moiety in AIE active fluorescent conjugated polymer[J]. POLYMER CHEMISTRY,2014,5(19):5638-5643.
APA	Ghosh, Khama Rani,Saha, Sukanta Kumar,&Wang, Zhi Yuan.(2014).Ultra-sensitive detection of explosives in solution and film as well as the development of thicker film effectiveness by tetraphenylethene moiety in AIE active fluorescent conjugated polymer.POLYMER CHEMISTRY,5(19),5638-5643.
MLA	Ghosh, Khama Rani,et al."Ultra-sensitive detection of explosives in solution and film as well as the development of thicker film effectiveness by tetraphenylethene moiety in AIE active fluorescent conjugated polymer".POLYMER CHEMISTRY 5.19(2014):5638-5643.