Self-Assembly of Magnesium and Zinc Trimethoxyphenylporphyrin Polymer as Nanospheres and Nanorods

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• 作者：Jagannath Bhuyan ; Sabyasachi Sarkar
• 刊名：Crystal Growth & Design
• 出版年：2011
• 出版时间：December 7, 2011
• 年：2011
• 卷：11
• 期：12
• 页码：5410-5414
• 全文大小：864K
• 年卷期：v.11,no.12(December 7, 2011)
• ISSN：1528-7505

文摘

The crystal structures of [Mg(TMPP)] (1) and [Zn(TMPP)] (2) (TMPP = 3,4,5-trimethoxyphenylporphyrin) show that 1 and 2 possess unusual one-dimensional (1D) coordination polymer structure through metal鈥搊xygen (oxygen atom from m-methoxy group of adjacent porphyrin) bonds. In 1 and 2, the metal ion is hexa-coordinated with the two axially ligated methoxy groups (bonded through oxygen) from the two neighboring porphyrins. In the nano domain, the self-organization of 1 in dichloromethane (DCM)鈥損etroleum ether is in a spherical shape. Complex 2 self-organizes as a nanorod in DCM鈥損etroleum ether medium. In DCM or in chloroform, such a self-organization process, which is influenced by air bubble formation, transforms the rod to a circular ring. In coordinating solvent like ethanol, the polymer aggregation is terminated in both 1 and 2 to produce relatively large rectangles. The varied ways of self-organization in the nanodomain of these two porphyrins have been discussed.