Effect of peripheral hydrophobic alkoxy substitution on the organic field effect transistor performance of amphiphilic tris(phthalocyaninato) europium triple-decker complexes

Yanli Chen; Renjie Li; Rongming Wang; Pan Ma; Shuai Dong; Yingning Gao; Xiyou Li; Jianzhuang Jiang

doi:10.1021/la701512r

Effect of peripheral hydrophobic alkoxy substitution on the organic field effect transistor performance of amphiphilic tris(phthalocyaninato) europium triple-decker complexes

Langmuir. 2007 Dec 4;23(25):12549-54. doi: 10.1021/la701512r. Epub 2007 Nov 9.

Authors

Yanli Chen¹, Renjie Li, Rongming Wang, Pan Ma, Shuai Dong, Yingning Gao, Xiyou Li, Jianzhuang Jiang

Affiliation

¹ Key Lab for Colloid and Interface Chemistry, Ministry of Education, Department of Chemistry, Shandong University, Jinan, China.

PMID: 17990897
DOI: 10.1021/la701512r

Abstract

A series of four amphiphilic heteroleptic tris(phthalocyaninato) europium complexes with different lengths of hydrophobic alkoxy substituents on one outer phthalocyanine ligand [Pc(15C5)4]Eu[Pc(15C5)4]Eu[Pc(OCnH(2n+1))8] (n = 4, 6, 10,12) (1, 2, 4, and 5) was designed and prepared. Their film forming and organic field effect transistor properties 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 fabricated into highly ordered films by the Langmuir-Blodgett (LB) technique, which displays carrier mobility in the direction parallel to the aromatic phthalocyanine rings in the range of 0.0032-0.60 cm2 V(-1) s(-1) depending on the length of the hydrophobic alkoxy substituents. This is rationalized on the basis of comparative morphology analysis results of the LB films by the atomic force microscopy technique.