Aptamer-based carboxyl-terminated nanocrystalline diamond sensing arrays for adenosine triphosphate detection

Evi Suaebah, Takuro Naramura, Miho Myodo, Masataka Hasegawa, Shuichi Shoji, Jorge J. Buendia, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Here, we propose simple diamond functionalization by carboxyl termination for adenosine triphosphate (ATP) detection by an aptamer. The high-sensitivity label-free aptamer sensor for ATP detection was fabricated on nanocrystalline diamond (NCD). Carboxyl termination of the NCD surface by vacuum ultraviolet excimer laser and fluorine termination of the background region as a passivated layer were investigated by X-ray photoelectron spectroscopy. Single strand DNA (amide modification) was used as the supporting biomolecule to immobilize into the diamond surface via carboxyl termination and become a double strand with aptamer. ATP detection by aptamer was observed as a 66% fluorescence signal intensity decrease of the hybridization intensity signal. The sensor operation was also investigated by the field-effect characteristics. The shift of the drain current–drain voltage characteristics was used as the indicator for detection of ATP. From the field-effect characteristics, the shift of the drain current–drain voltage was observed in the negative direction. The negative charge direction shows that the aptamer is capable of detecting ATP. The ability of the sensor to detect ATP was investigated by fabricating a field-effect transistor on the modified NCD surface.

    Original languageEnglish
    Article number1686
    JournalSensors (Switzerland)
    Volume17
    Issue number7
    DOIs
    Publication statusPublished - 2017 Jul 21

    Fingerprint

    Diamond
    adenosine triphosphate
    Diamonds
    Adenosine Triphosphate
    diamonds
    Sensors
    strands
    sensors
    Ultraviolet lasers
    Electric potential
    Biomolecules
    Excimer lasers
    Photoelectron Spectroscopy
    Excimer Lasers
    Field effect transistors
    Fluorine
    Amides
    shift
    electric potential
    Labels

    Keywords

    • Adenosine triphosphate
    • Aptamer
    • Carboxyl termination
    • Nanocrystalline diamond

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Atomic and Molecular Physics, and Optics
    • Biochemistry
    • Electrical and Electronic Engineering

    Cite this

    Aptamer-based carboxyl-terminated nanocrystalline diamond sensing arrays for adenosine triphosphate detection. / Suaebah, Evi; Naramura, Takuro; Myodo, Miho; Hasegawa, Masataka; Shoji, Shuichi; Buendia, Jorge J.; Kawarada, Hiroshi.

    In: Sensors (Switzerland), Vol. 17, No. 7, 1686, 21.07.2017.

    Research output: Contribution to journalArticle

    Suaebah, Evi ; Naramura, Takuro ; Myodo, Miho ; Hasegawa, Masataka ; Shoji, Shuichi ; Buendia, Jorge J. ; Kawarada, Hiroshi. / Aptamer-based carboxyl-terminated nanocrystalline diamond sensing arrays for adenosine triphosphate detection. In: Sensors (Switzerland). 2017 ; Vol. 17, No. 7.
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