期刊
INORGANIC CHEMISTRY
卷 46, 期 26, 页码 11397-11404出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic7016825
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A series of amphiphilic heteroleptic tris(phthalocyaninato) europium complexes with hydrophilic poly(oxyethylene) heads and hydrophobic alkoxy tails {Pc[(OC2H4)(2)OCH3](8)}Eu{pc[(OC2H4)(2)OCH3](8)}Eu[Pc(OCNH2n+1)(8)] (n = 6, 8, 10,12) (1-4) were designed and prepared from the reaction between homoleptic bis(phthalocyaninato) europium compound {PC[(OC2H4)(2)OCH3](8)}Eu{Pc[(OC2H4)(2)OCH3]8} and metal-free 2,3,9,10,16,17,23,24-octakis(alkoxy)phthalocyanine H2PC(OCnH2n+1)(8) (n = 6, 8, 10,12) in the presence of Eu(acac)3 center dot H2O (Hacac = acetylacetone) in boiling 1,2,4-trichlorobenzene (TCB). These novel sandwich triple-decker complexes have been characterized by a wide range of spectroscopic methods and have been electrochemically studied. With the help of the Langmuir-Blodgett (LB) technique, these typical amphiphilic triple-decker complexes have been fabricated into organic field effect transistors (OFET) with an unusual bottom contact configuration. The devices display good OFET performance with the carrier mobility for holes in the direction parallel to the aromatic phthalocyanine rings, which shows dependence on the length of the hydrophobic alkoxy side chains, decreasing from 0.46 for 1 to 0.014 cm(2) V-1 S-1 for 4 along with the increase in the carbon number in the hydrophobic alkoxy side chains.
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