Selective and Sensitive TNT Sensors Using Biomimetic Polydiacetylene-Coated CNT-FETs
- Authors
- Kim, Tae Hun; Lee, Byung Yang; Jaworski, Justyn; Yokoyama, Keisuke; Chung, Woo-Jae; Wang, Eddie; Hong, Seunghun; Majumdar, Arun; Lee, Seung-Wuk
- Issue Date
- Apr-2011
- Publisher
- American Chemical Society
- Keywords
- lipid membrane receptor; polydiacetylene; trinitrotoluene; carbon nanotube; TNT sensor
- Citation
- ACS Nano, v.5, no.4, pp 2824 - 2830
- Pages
- 7
- Journal Title
- ACS Nano
- Volume
- 5
- Number
- 4
- Start Page
- 2824
- End Page
- 2830
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/16633
- DOI
- 10.1021/nn103324p
- ISSN
- 1936-0851
1936-086X
- Abstract
- Miniaturized smart sensors that can perform sensitive and selective real-time monitoring of target analytes are tremendously valuable for various sensing applications. We developed selective nanocoatings by combining trinitrotoluene (TNT) receptors bound to conjugated polydiacetylene (PDA) polymers with single-walled carbon nanotube field-effect transistors (SWNT-FET). Selective binding events between the TNT molecules and phage display derived TNT receptors were effectively transduced to sensitive SWNT-FET conductance sensors through the PDA coating layers. The resulting sensors exhibited an unprecedented 1 fM sensitivity toward TNT in real time, with excellent selectivity over various similar aromatic compounds. Our biomimetic receptor coating approach may be useful for the development of sensitive and selective micro- and nanoelectronic sensor devices for various other target analytes.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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