Synthesis and properties of 5,10,15,20-tetra (4-lauroylimidophenyl)porphyrin and its metal complexes

被引：22

作者：

Sun, Er-Jun ^{[1
]}

Cheng, Xiu-Ii ^{[1
]}

Wang, Dong ^{[1
]}

Tang, Xue-Xin ^{[1
]}

Yu, Shuang-Jiang ^{[1
]}

Shi, Tong-Shun ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130023, Peoples R China

来源：

SOLID STATE SCIENCES | 2007年 / 9卷 / 11期

关键词：

porphyrin; transition metal complex; liquid crystal; cyclic voltammetry; surface photovoltage;

D O I：

10.1016/j.solidstatesciences.2007.07.012

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Transition metal complexes of 5,10,15,20-tetra(4-lauroylimidophenyl)porphyrin TLPPM [M = Mn(Cl), Fe(Cl), Co, Ni, Cu, Zn] have been synthesized and characterized by means of elemental analyses, UV-VIS spectra, infrared spectra, H-1 NMR spectra, molar conductance, differential scanning calorimetry (DSC), polarized optical microscopy (POM), cyclic voltammetry, luminescence spectra and surface photovoltage spectroscopies. The porphyrin ligand shows liquid crystalline behaviour, and it exhibits a high phase transition temperature 182 degrees C and a broad mesophase temperature span, 88 degrees C. The oxidation and reduction properties of the compounds were investigated by cyclic voltammetry. The photovoltaic properties and charge transfer process of the compounds were investigated by surface photovoltage spectroscopy (SPS) and electric field-induced surface photovoltage spectroscopic (EFISPS) techniques, which revealed that all the compounds are p-type semiconductors. Quantum yields of the S-1 -> S-0 fluorescence were measured at room temperature. These studies will contribute to further choice and application of the liquid crystals. (C) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：1061 / 1068

页数：8

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