期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 275, 期 -, 页码 367-372出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.08.030
关键词
Field-effect transistor (FET); Carbon nanotube (CNT); Dendrimer-encapsulated nanoparticle (DEN); Glutamate
资金
- National Research Foundation of Korea - Ministry of Science, ICT and Future Planning [NRF-2017R1A2B4004285]
- Soonchunhyang University Research Fund
We present a method for functionalization of single-walled carbon nanotubes (CNTs) with amine-terminated dendrimers encapsulating catalytic nanoparticles, and demonstrate the feasibility of functionalized CNTs as efficient field-effect transistor (FET)-sensing platforms. As a model system, we synthesized N dendrimer-encapsulated nanoparticles (DENs) using amine-terminated sixth-generation poly(amidoamine) dendrimers, and functionalized CNT-based FET channels with N DENs via electro-oxidative grafting of the terminal amines of dendrimers onto the surface of CNTs. We also demonstrated spatially-controlled surface functionalization of CNTs and subsequent modification of the functionalized CNT-based FET channels with glutamate oxidases for efficient FET-based sensing of glutamates. Our approach could facilitate the functionalization of CNTs with a variety of catalytic nanoparticles and biologically active materials, enabling the development of sensitive and selective FET-based sensor devices.
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