NDLI: Highly efficient nitrate ester explosive vapor probe based on multiple triphenylaminopyrenyl-substituted POSS

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Inside back cover

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Journal of Materials Chemistry A Vol - 3 Issue - 8

Journal of Materials Chemistry A Vol - 3 Issue - 7

Journal of Materials Chemistry A Vol - 3 Issue - 6

Journal of Materials Chemistry A Vol - 3 Issue - 5

Journal of Materials Chemistry A Vol -2

Journal of Materials Chemistry A Vol -1

Highly efficient nitrate ester explosive vapor probe based on multiple triphenylaminopyrenyl-substituted POSS

Content Provider	Royal Society of Chemistry (RSC)
Author	Cheng, Jiangong Zhu, Defeng Fu, Yanyan Chen, Lei He, Qingguo Gao, Yixun Xu, Wei Cao, Huimin
Copyright Year	2015
Abstract	Compared with nitroaromatic explosive detection, nitrate ester explosive detection has not received considerable attention possibly due to the absence of an aromatic ring and their difficulty in being detected. An eight triphenylamino-pyrenyl substituted POSS (P8PT) was designed as a sensory material. POSS was chosen as the skeleton due to its nano structure, multiple reactive sites, structural similarity with nitrate esters and high thermal stability, which will contribute to large surface area induced high sensitivity, tunable sensory units number, stronger interaction force with nitrate esters and high stability. For comparison, triphenylamino-pyrene (Py-TPA) (without POSS), one and three Py-TPA substituted POSS were also synthesized and characterized. Their chemical structures, photophysical and electrochemical properties show that P8PT has a 3-D symmetrical spatial conformation, higher molar extinction coefficient, higher area-to-volume ratio, multiple exciton transfer path, and matched energy level with nitrate ester explosives, which will all contribute to highly efficient sensing performance and efficient selectivity for the detection of nitrate ester explosives such as nitroglycerin (NG). The fluorescence of the P8PT film is 63% quenched upon exposure to a saturated vapor of NG for 50 s and 92% quenched for 300 s at room temperature due to photoinduced electron transfer between the probe and NG. These results reveal that P8PT is suitable for preparing a highly sensitive and efficient thin-film device for detecting nitrate esters.
Starting Page	4820
Ending Page	4826
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	9
Journal	Journal of Materials Chemistry A
DOI	10.1039/c4ta05704j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	POSS Ester Nitrate Electrochemistry Conformational isomerism Molar attenuation coefficient Exciton Nitroglycerin Fluorescence Photoinduced electron transfer
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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