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A highly porous and conductive composite gate electrode for OTFT sensors

机译：用于OTFT传感器的高度多孔和导电复合栅电极

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摘要

Ionic/protonic to electronic transducers based on organic thin film transistors have shown great promise for applications in bioelectronic interface devices and biosensors, and development of materials that exhibit mixed ionic/electronic conduction are an essential part of these devices. In this work, we investigated the proton sensing properties of an all solid-state and low voltage operating organic thin film transistor (OTFT) that uses the organic mixed conductor poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS) as the gate electrode. To address the limited sensitivity due to the lack of porosity in PEDOT:PSS base sensors, we proposed a composite gate electrode material composed of PEDOT:PSS and proton conducting mesoporous SO3H-Si-MCM-41 nanoparticles for improved proton sensitivity. The composite gate electrode doubles the proton sensitivity of the OTFT, indicating a clear advantage of adding SO3H-Si-MCM-41 in the PEDOT:PSS gate. Moreover, the OTFTs with the composite gate electrode maintained OTFT characteristics similar to that of the PEDOT:PSS gated OTFT. A detailed and systematic study of the effect of variation in the composition of PEDOT:PSS:SO3H-Si-MCM-41 on OTFT characteristics and sensing properties is carried out. Our results open up the possibility of combining inorganic nanomaterials with organic conductors in the development of highly efficient bioelectronic sensing platforms.
机译：基于有机薄膜晶体管的离子/质词对电子传感器对生物电子界面装置和生物传感器的应用具有很大的希望，以及表现出混合离子/电子传导的材料的开发是这些装置的重要组成部分。在这项工作中，我们研究了所有固态和低压操作有机薄膜晶体管（OTFT）的质子传感特性，所述固态和低压操作有机薄膜晶体管（OTFT）使用掺杂有聚（苯乙烯磺酸盐）的有机混合导体聚（3,4-乙二氧基噻吩）（PEDOT） ：PSS）作为栅电极。为了满足孔隙率在PEDOT中缺乏孔隙率的有限敏感性，我们提出了一种由PEDOT：PSS和质子传导中孔SO3H-SI-MCM-41纳米颗粒组成的复合栅电极材料，用于改善质子敏感性。复合栅电极使OTFT的质子灵敏度加倍，表明在PEDOT中添加SO3H-SI-MCM-41的清晰优势：PSS栅极。此外，具有复合栅电极的OTFTS保持与PEDOT的otft特性：PSS门控OTFT。进行了对PEDOT组合物的变化效果的详细和系统研究：进行了OTFT特性和感测性能的SO3H-SI-MCM-41。我们的结果开辟了在高效生物电子传感平台开发中将无机纳米材料与有机导体组合的可能性。

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  • 来源
    《RSC Advances》 |2019年第13期|共7页
  • 作者

    Yambem Soniya D.; Burns Samantha; Arthur Joshua N.; Timm Jana; Woodruff Maria A.; Pandey Ajay K.; Marschall Roland;

  • 作者单位

    Queensland Univ Technol Sch Chem Phys &

    Mech Engn Sci &

    Engn Fac Brisbane Qld 4000 Australia;

    Queensland Univ Technol Sch Chem Phys &

    Mech Engn Sci &

    Engn Fac Brisbane Qld 4000 Australia;

    Queensland Univ Technol Sch Chem Phys &

    Mech Engn Sci &

    Engn Fac Brisbane Qld 4000 Australia;

    Univ Bayreuth Dept Chem D-95447 Bayreuth Germany;

    Queensland Univ Technol Sch Chem Phys &

    Mech Engn Sci &

    Engn Fac Brisbane Qld 4000 Australia;

    Queensland Univ Technol Inst Hlth &

    Biomed Innovat Kelvin Grove Qld 4059 Australia;

    Univ Bayreuth Dept Chem D-95447 Bayreuth Germany;

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