One-step production of pyrene-1-boronic acid functionalized graphene for dopamine detection

Teo, Ellie Yi Lih and Ali, Gomaa A. M. and Algarni, H. and Cheewasedtham, Wilairat and Rujiralai, Thitima and K. F., Chong (2019) One-step production of pyrene-1-boronic acid functionalized graphene for dopamine detection. Materials Chemistry and Physics, 231. pp. 286-291. ISSN 0254-0584. (Published)

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A facile molecular wedging method is used to exfoliate graphite flakes into graphene sheets, with concurrent functionalization to form pyrene-1-boronic acid functionalized graphene (PBA/G). Different techniques are used to characterize the prepared materials such as field emission scanning electron microscope, energy dispersive X-ray analyzer, Raman, Fourier transformed infrared spectroscopy and fluorescence spectroscopy to evaluate their structural and morphological characteristics. The intercalation of PBA into graphite sheets, followed by exfoliation can be observed under the electron microscope. Elemental analyses show that the PBA acts more than intercalant, it is functionalized onto the graphene sheets upon exfoliation to form PBA/G. Raman analysis indicates PBA/G has a lower number of graphene layers as a result of successful exfoliation by PBA. Electrochemical impedance studies show that the PBA/G possesses high affinity for dopamine through the diol groups interaction, which renders it to have enhanced detection for dopamine.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Functionalized grapheme; Sensor; Dopamine; Pyrene-1-boronic acid; Electrochemical impedance
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 07 Oct 2019 06:55
Last Modified: 07 Oct 2019 06:55
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