5.2.6 Au Nanoparticle Plasmon Sensor for Terpene Detection
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- 5.2 Novel Sensing Principles
- Author(s)
- B. Chen, C. Liu, M. Ota, K. Hayashi - Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University (Japan)
- Pages
- 450 - 453
- DOI
- 10.5162/IMCS2012/5.2.6
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
This paper describes a method to generate films composed of Au nanoparticles (AuNPs) assembled in a stepwise manner entirely from solution. AuNPs in the films were linked by two kinds of dithiol: 1,4benzenedithiol and 1,10-decanedithiol which have different molecular length and molecular electrical conductivity. Through comparing their LSPR spectra characters, we obtain that the film structures are different, and the difference is caused by structural characters of linkers. Layer-by-layer structured AuNPs films were used to detect terpene gases possessing different characters, and the local refractive index sensitivity improvement was realized. Sensitivity is attributed to the solubility between terpene gases and dithiol linkers.