Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/31621
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    標題: Extensibility effect of poly(3-hexylthiophene) on the glucose sensing performance of mixed poly(3-hexylthiophene)/octadecylamine/glucose oxidase Langmuir-Blodgett films
    作者: Wang, Ke-Hsuan
    Hsu, Wen-Ping
    Chen, Liang-Huei
    Lin, Wei-Don
    Lee, Yuh-Lang
    貢獻者: Natl Cheng Kung Univ, Dept Chem Engn
    Tokyo Univ Sci, Dept Ind Chem, Tokyo 36063, Japan
    Natl United Univ, Dept Chem Engn
    Chia Nan Univ Pharm & Sci, Dept Med Chem
    關鍵字: Poly(3-hexylthiophene)
    Glucose oxidase (GOx)
    Langmuir-Blodgett films
    Glucose sensor
    日期: 2017-07-01
    上傳時間: 2018-11-30 15:50:32 (UTC+8)
    出版者: Elsevier Science Bv
    摘要: Poly(3-hexylthiophene) (P3HT) is utilized as a material to enhance the glucose sensing performance of glucose oxidase (GOx) Langmuir-Blodgett (LB) films. To enhance the extensibility and homogeneity of the P3HT in the LB films, octadecylamine (ODA) is introduced. The characteristics of the mixed P3HT/ODA Langmuir monolayers are investigated first and then, utilized as template layers to adsorb GOx from the subphase, preparing P3HT/ODA/GOx Langmuir-Blodgett films for glucose sensing. The results show that P3HT molecules tend to aggregate at the air/liquid interface and, furthermore, the P3HT monolayer has a weak ability to adsorb GOx from the subphase. By using mixed P3HT/ODA monolayer, the presence of ODA not only inhibits the aggregation of P3HT, but also increases the adsorption ability of the monolayer to GOx. The extensibility of P3HT and the homogeneity of the P3HT/ODA monolayers are closely related to the concentration of P3HT/ODA stock solutions. On the glucose sensing experiments, the performance of the P3HT/ODA/GOx LB film is greatly improved due to the presence of P3HT and, furthermore, the sensibility increases with increasing extensibility of P3HT molecules. The best sensitivity achieved for the P3HT/ODA/GOx film is 5.4 mu A mM(-1) cm(-2) which is over two times the value obtained by the ODA/GOx film (2.3 mu A mM(-1) cm(-2)). (C) 2017 Elsevier B.V. All rights reserved.
    關聯: Colloids and Surfaces B-Biointerfaces, v.155, pp.104-110
    显示于类别:[醫藥化學系 ] 期刊論文


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