Regioregular polythiophene field-effect transistors employed as chemical sensors
Regioregular polythiophene field-effect transistors employed as chemical sensors
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DOI：
10.1016/s0925-4005(03)00172-2
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发表时间：
2003-08
影响因子：
8.4
通讯作者：
L. Torsi;A. Tafuri;N. Cioffi;M. Gallazzi;A. Sassella;L. Sabbatini;P. Zambonin
中科院分区：
文献类型：
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作者：
L. Torsi;A. Tafuri;N. Cioffi;M. Gallazzi;A. Sassella;L. Sabbatini;P. Zambonin
可溶的烷基和烷氧基取代的区域化学定义的聚噻吩被用作传感有机薄膜晶体管（OTFTs）的活性层。这种活性层具有多晶形态，取代基链具有不同的相关偶极矩。挥发性有机化合物携带的部分是化学同源的选定的聚合物侧链被用作分析物。评估了电和石英晶体微平衡传感器的响应，并提出了涉及弱极性/极性型相互作用的传感机制的基本原理。
Soluble alkyl- and alkoxyl-substituted regiochemically defined polyterthiophenes are used as active layers in sensing organic thin films transistors (OTFTs). Such active layers have a polycrystalline morphology and the substituent chains bear different associated dipole moments. Volatile organic compounds carrying moieties that are chemically homologous to the selected polymers’ side chains are used as analytes. Both electrical and quartz crystal microbalance sensor responses are evaluated and a rationale for the sensing mechanisms involving weak polar/polar-type interactions is proposed.