Thermal behavior of tetrapyrrole derivatives and their mixed complexes

被引：7
|
作者：
Cordeiro, M. R. [1 ]
Moreira, W. C. [1 ]
机构：
[1] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP, Brazil
来源：
THERMOCHIMICA ACTA | 2009年 / 486卷 / 1-2期
基金：
巴西圣保罗研究基金会;
关键词：
Heterotriads; Thermal analysis; Metallophthalocyanines; Metalloporphyrins; ELECTRICAL-CONDUCTIVITY; LEAD PHTHALOCYANINE; PORPHYRIN; KINETICS;
D O I：
10.1016/j.tca.2008.12.026
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The thermal properties of CoPc and ZnPc (Pc=phthalocyanine) and ZnTPP (TPP=tetraphenylporphyrin), pyrazine adducts and heterotriads [CoPc(pyz)ZnTPP(pyz)CoPc] and [ZnTPP(pyz)CoPc(pyz)ZnTPP] were investigated using TGA and DSC. The thermal stability of axial coordination was investigated for adduct complexes and it increased in the order ZnPc(pyz)(2)<ZnTPP(pyz)(2)approximate to CoPc(pyz)(2). The phthalocyanine-porphyrin mixed complexes decompose in several steps; the initial step corresponds to the degradation of the spacer ligand. It was shown that the breakdown mechanism of phthalocyanine macrocycle was affected by the triad formation. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：52 / 56
页数：5
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