Platform for smart SERS sensors based on surface-modified metal plasmonic thin films
| Parent link: | Journal of Materials Science and Chemical Engineering: Scientific Journal Vol. 5, iss. 3 (Suppl): 5th World Congress on Materials Science & Engineering, June 13-15, 2016 Alicante, Spain.— 2016.— [P. 86] |
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| Zusammenfassung: | Title screen Plasmon-active noble metals nanostructures based on Ag, Au thin films become widely applied in the field of plasmonics and related sensing technologies. Moreover, surface modification by the attachment of organic groups to plasmonic surafces is a subject of current interest in material science and sensor design.We proposed a method for development of new SERS based sensor systems for the heavy metal ions and organic contaminants detection. Proposed systems consist of plasmon-active periodical metal surfaces decorated with immobilized organic chelator or thermo-regulated polymer. Firstly, we developed a method for covalent modification of Au plasmonic thin films via interaction with arenediazonium tosylates. Further, grafting of 4-carboxypheyl and 4-aminophenyl groups enabled to create a strong covalent linker between the surface and active functional grops. Thermo-regulated polymer (PNIPAAM) and chelator molecule DTPA were grafted to the plasmonic films via interaction with active amino and carboxyl on the surafec. The molecular recognition of contaminants resulted in the shift of SERS peaks position or arising of the new peaks in the latter case. As model solutions we used solutions of heavy metal ions (Pb2+, Cu2+, Cd2+) for capturing by chelator and solutions of azo-dyes (crystal violet, metanil yellow, disperse red I) for thermos-regulating capturing by PNIPAM. |
| Sprache: | Englisch |
| Veröffentlicht: |
2016
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| Online-Zugang: | http://www.omicsonline.org/proceedings/platform-for-smart-sers-sensors-based-on-surfacemodified-metal-plasmonic-thin-films-45008.html http://dx.doi.org/10.4172/2169-0022.C1.038 |
| Format: | Elektronisch Buchkapitel |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=650551 |