Effect of Peripheral Hydrophobic Alkoxy Substitution on the Organic Field Effect Transistor Performance of Amphiphilic Tris(phthalocyaninato) Europium Triple-Decker Complexes

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• 作者：Yanli Chen ; Renjie Li ; Rongming Wang ; Pan Ma ; Shuai Dong ; Yingning Gao ; Xiyou Li ; Jianzhuang Jiang
• 刊名：Langmuir
• 出版年：2007
• 出版时间：December 4, 2007
• 年：2007
• 卷：23
• 期：25
• 页码：12549 - 12554
• 全文大小：260K
• 年卷期：v.23,no.25(December 4, 2007)
• ISSN：1520-5827

文摘

A series of four amphiphilic heteroleptic tris(phthalocyaninato) europium complexes with different lengths ofhydrophobic alkoxy substituents on one outer phthalocyanine ligand [Pc(15C5)₄]Eu[Pc(15C5)₄]Eu[Pc(OC_nH_2n+1)₈](n = 4, 6, 10,12) (1, 2, 4, and 5) was designed and prepared. Their film forming and organic field effect transistorproperties have been systematically studied in comparison with analogous [Pc(15C5)₄]Eu[Pc(15C5)₄]Eu[Pc(OC₈H₁₇)₈](3). Experimental results showed that all these typical amphiphilic sandwich triple-decker molecules have been fabricatedinto highly ordered films by the Langmuir-Blodgett (LB) technique, which displays carrier mobility in the directionparallel to the aromatic phthalocyanine rings in the range of 0.0032-0.60 cm² V^-1 s^-1 depending on the length ofthe hydrophobic alkoxy substituents. This is rationalized on the basis of comparative morphology analysis results ofthe LB films by the atomic force microscopy technique.