A nanowire sensor for aromatic nitro compounds using charge transfer interaction

Kumi Masunaga, Motohiro Sato, Kenshi Hayashi, Kiyoshi Toko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Electron acceptor molecules form charge transfer (CT) complexes with electron donors. CT complexes are known as an organic conductive material. In this report, we suggest a nanowire sensor to detect electron-acceptive aromatic nitro compounds by conductance switching brought on by charge transfer interaction. The sensor surface possesses a molecular wire network formed by bridging nanogaps between Au nanoparticles (Au-NPs) with electron donor oligothiophene. The Au-NPs were fabricated by sputter deposition with controlling the particle-size and the gap-size. We confirmed the oligothiophene bridging by resistivity and the formation of CT interaction between oligothiophene and electron acceptors by fluorescence quenching. The conductance of the sensor electrode was increased by adsorption of electron acceptors, such as iodine and aromatic nitro compounds.

Original languageEnglish
Title of host publicationTRANSDUCERS and EUROSENSORS '07 - 4th International Conference on Solid-State Sensors, Actuators and Microsystems
Pages1413-1416
Number of pages4
DOIs
Publication statusPublished - Dec 1 2007
Event4th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS '07 - Lyon, France
Duration: Jun 10 2007Jun 14 2007

Publication series

NameTRANSDUCERS and EUROSENSORS '07 - 4th International Conference on Solid-State Sensors, Actuators and Microsystems

Other

Other4th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS '07
CountryFrance
CityLyon
Period6/10/076/14/07

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All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Masunaga, K., Sato, M., Hayashi, K., & Toko, K. (2007). A nanowire sensor for aromatic nitro compounds using charge transfer interaction. In TRANSDUCERS and EUROSENSORS '07 - 4th International Conference on Solid-State Sensors, Actuators and Microsystems (pp. 1413-1416). [4300408] (TRANSDUCERS and EUROSENSORS '07 - 4th International Conference on Solid-State Sensors, Actuators and Microsystems). https://doi.org/10.1109/SENSOR.2007.4300408