TY - JOUR ID - 14635 TI - Formation Of Nanowires From Pentacene Derivatives By Single-particle Triggered Linear Polymerization JO - Advanced Materials Letters JA - AML LA - en SN - 0976-3961 AU - Takeshita, Yuki AU - Sakurai, Tsuneaki AU - Asano, Atsushi AU - Takano, Katsuyoshi AU - Omichi, Masaaki AU - Sugimoto, Masaki AU - Seki, Shu AD - Y1 - 2015 PY - 2015 VL - 6 IS - 2 SP - 99 EP - 103 KW - nanowire KW - pentacene KW - ion beam KW - ion track KW - organic materials DO - 10.5185/amlett.2015.5720 N2 - The present paper highlights the development of organic nanowires from small-molecular organic compounds through intra-track chemical reactions by using ion beams.  Thin films of pentacene derivatives, 6,13-bis(triethylsilylethynyl)pentacene (TES-Pn) and 6,13-bis((triisopropylsilyl)ethynyl)pentacene (TIPS-Pn), were subjected to high-energy particle irradiation at a fluence of 10 8 –10 10 cm –2 and thereafter developed by organic solvents. This method, referred as Single-particle Triggered Linear Polymerization (STLiP), afforded the isolation of wire-shaped nanomaterials on a substrate that were visualized by atomic force microscopy and scanning electron microscopy.  These derivatives exhibited high enough propagation and cross-linking reaction efficiencies (G) as GTES-Pn of > 7 and GTIPS-Pn of  > 5 (100 eV) –1 , whose values are significantly larger than those observed for previously studied simple cross-linking reactions observed in other polymeric materials, being apparently in the G-value range of chain reactions.  On the other hand, the pristine pentacene and derivative without (trialkylsilyl)ethynyl moiety did not give any nanowires. Considering these observations, highly efficient intra-track propagation/polymerization/cross-linking reactions would take place due to the introduction of (trialkylsilyl)ethynyl groups, resulting in the formation of one-dimensional nanostructures based on small molecules. The STLiP technique serves as a versatile and easy nanofabrication tool for small molecular materials and the resultant nanowires with high functional density are potentially usable as optical, electronic, and sensor materials. UR - https://aml.iaamonline.org/article_14635.html L1 - https://aml.iaamonline.org/article_14635_74402aa0ab4f5faa8739d434c340bf0f.pdf ER -