Detection of triacetone triperoxide (TATP) with an array of sensors based on non-specific interactions

Eyal Capua; Roberto Cao; Chaim N. Sukenik; Ron Naaman

doi:10.1016/j.snb.2009.04.045

Detection of triacetone triperoxide (TATP) with an array of sensors based on non-specific interactions

Eyal Capua
, Roberto Cao
, Chaim N. Sukenik
, Ron Naaman

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

An array of hybrid organic-semiconductor sensors was developed aimed at selectively detecting triacetone triperoxide (TATP). Each element of the array is a field effect-like transistor based on GaAs. The gate in these devices has been replaced by a self-assembled monolayer of receptor molecules. The current layout features selectivity to TATP and is able to detect less than 100 ppb. A correlation among the responses, the chain length of the grafted molecules, and the surface potential is exhibited, suggesting that the sensing mechanism involves charge transfer between the adsorbed molecules and the substrate.

Original language	English
Pages (from-to)	122-127
Number of pages	6
Journal	Sensors and Actuators, B: Chemical
Volume	140
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2009.04.045
State	Published - 18 Jun 2009

Bibliographical note

Funding Information:
We acknowledge the support from the Grand Center for Sensors and Security at the Weizmann Institute.

Funding

We acknowledge the support from the Grand Center for Sensors and Security at the Weizmann Institute.

Funders
Grand Center for Sensors and Security
Weizmann Institute

Keywords

Charge transfer
Electronic nose
Explosives
Sensor

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10.1016/j.snb.2009.04.045

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Detection of triacetone triperoxide (TATP) with an array of sensors based on non-specific interactions

Abstract

Bibliographical note

Funding

Keywords

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