Enhanced Electrical Conductivity in Poly(3-hexylthiophene)/Fluorinated Tetracyanoquinodimethane Nanowires Grown with a Porous Alumina Template

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• 作者：Jianchen Hu ; Kendal W. Clark ; Ryoma Hayakawa ; An-Ping Li ; Yutaka Wakayama
• 刊名：Langmuir
• 出版年：2013
• 出版时间：June 18, 2013
• 年：2013
• 卷：29
• 期：24
• 页码：7266-7270
• 全文大小：280K
• 年卷期：v.29,no.24(June 18, 2013)
• ISSN：1520-5827

文摘

We report on improved electrical conductivity in poly(3-hexylthiophene) (P3HT)/2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) composite nanowires grown using an anodized aluminum oxide (AAO) template. The electrical conductivity of individual nanowire measured by four-probe scanning tunneling microscopy shows that F4-TCNQ molecules are effectively doped into P3HT by capillary force. The resistivity is tuned in the 0.1鈥?0 惟 cm range by changing the F4-TCNQ concentration from 10 to 0.1 wt % and is 2鈥? orders of magnitude smaller than that of the corresponding P3HT/F4-TNCQ thin film composites. The AAO template-assisted synthesis approach thus appears to be effective for high chemical doping and for improving the electrical conductivity of the molecular wires.