Preparation of single wall carbon nanotube-pyrene 3D hybrid nanomaterial and its sensor response to ammonia

ŞENOCAK, Ahmet, GÖL, Cem, BASOVA, Tamara V., DEMIRBAŞ, Erhan, DURMUŞ, Mahmut, AL-SAGUR, Hadi, KADEM, Burak and HASSAN, Aseel (2017). Preparation of single wall carbon nanotube-pyrene 3D hybrid nanomaterial and its sensor response to ammonia. Sensors and Actuators B: Chemical, 256, 853-860.

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In this work, the structural features and sensor response toward ammonia of a three dimensional (3D) SWCNTs material covalently functionalised with 1,6-diethynylpyrene were studied. The target SWCNTs hybrid material was prepared by the reaction of azido substituted SWCNTs with the 1,6-diethynylpyrene containing double terminal alkyne groups via the azide-alkyne Huisgen cycloaddition (Click) reaction. The structure of the 1,6-diethynylpyrene compound was determined by different spectroscopic methods such as FT-IR, 1H-NMR, MALDI-TOF mass, fluorescence and UV–Visible, while its SWCNT-Pyrene 3D hybrid material was characterized by FT-IR, Raman, UV-Visible spectroscopies and thermogravimetric analysis. The morphology of the hybrid films was investigated by scanning electron microscope (SEM). The sensing performance of the SWCNT-Pyrene 3D hybrid material was studied against low-concentrations of NH3 in the range of 0.1-40 ppm by measuring changes in the films' conductivity at different levels of relative humidity. The reversible electrical sensor response toward ammonia was observed both in the case of SWCNT and SWCNT-Pyrene 3D hybrid films however the response values of SWCNT-Pyrene 3D hybrid film were higher than those of SWCNT.

Item Type: Article
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group
Identification Number:
Page Range: 853-860
Depositing User: Jill Hazard
Date Deposited: 09 Oct 2017 15:16
Last Modified: 18 Mar 2021 01:23

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