The DOI matches its Crossref record.
Attogram Sensing of Trinitrotoluene with a Self-Assembled Molecular Gelator
Abstract
Detection of explosives is of utmost importance due to the threat to human security as a result of illegal transport and terrorist activities. Trinitrotoluene (TNT) is a widely used explosive in landmines and military operations that contaminates the environment and groundwater, posing a threat to human health. Achieving the detection of explosives at a sub-femtogram level using a molecular sensor is a challenge. Herein we demonstrate that a fluorescent organogelator exhibits superior detection capability for TNT in the gel form when compared to that in the solution state. The gel when coated on disposable paper strips detects TNT at a record attogram (ag, 10(-18) g) level (∼12 ag/cm(2)) with a detection limit of 0.23 ppq. This is a simple and low-cost method for the detection of TNT on surfaces or in aqueous solutions in a contact mode, taking advantage of the unique molecular packing of an organogelator and the associated photophysical properties.
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Citations
Cited by
Fluorescence based explosive detection: from mechanisms to sensory materials
Sun, X., Wang, Y., & Lei, Y. (2015) · Chemical Society Reviews · doi:10.1039/c5cs00496a · Cited by 1,243
Okesola, B. O., & Smith, D. K. (2016) · Chemical Society Reviews · doi:10.1039/c6cs00124f · Cited by 760
Joarder, B., Desai, A. V., Samanta, P., Mukherjee, S., & Ghosh, S. K. (2015) · Chemistry – A European Journal · doi:10.1002/chem.201405167 · Cited by 334
Highly Selective and Sensitive Fluorescent Paper Sensor for Nitroaromatic Explosive Detection
Ma, Y., Li, H., Peng, S., & Wang, L. (2012) · Analytical Chemistry · doi:10.1021/ac302138c · Cited by 283
Metadata
- Authors
- Kartha, K. K., Babu, S. S., Srinivasan, S., & Ajayaghosh, A.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-03-05
- Volume
- 134
- Issue
- 10
- Pages
- 4834-4841
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2008556668
- Cited by
- 486
- References
- 0
- FWCI
- 25.73
- Type
- journal article
- Language
- en
- Open access
- closed
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