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Rungreungthanapol, Tharatorn; Homma, Chishu; Akagi, Ken-ichi; Tanaka, Masayoshi; Kikuchi, Jun; Tomizawa, Hideyuki; Sugizaki, Yoshiaki; Isobayashi, Atsunobu; Hayamizu, Yuhei; Okochi, Mina
Analytical chemistry (Washington), 03/2023, Letnik: 95, Številka: 9Journal Article
An olfactory receptor mimetic peptide-modified graphene field-effect transistor (gFET) is a promising solution to overcome the principal challenge of low specificity graphene-based sensors for volatile organic compound (VOC) sensing. Herein, peptides mimicking a fruit fly olfactory receptor, OR19a, were designed by a high-throughput analysis method that combines a peptide array and gas chromatography for the sensitive and selective gFET detection of the signature citrus VOC, limonene. The peptide probe was bifunctionalized via linkage of a graphene-binding peptide to facilitate one-step self-assembly on the sensor surface. The limonene-specific peptide probe successfully achieved highly sensitive and selective detection of limonene by gFET, with a detection range of 8–1000 pM, while achieving facile sensor functionalization. Taken together, our target-specific peptide selection and functionalization strategy of a gFET sensor demonstrates advancement of a precise VOC detection system.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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