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The synthesis, spectroscopy, electrochemistry and photophysical properties of novel, sandwich europium(III) complexes with a porphyrin ligand bearing four pyrenyl groups in meso-positions by Ning Sheng; Pei-Hua Zhu; Chang-Qin Ma; Jian-Zhuang Jiang is a Materials Science article available to read on EtoBox.

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Novel, metal free porphyrins containing four pyrenyl groups in the meso-positions were used to provide novel, sandwich-type mixed tetrapyrrole europium double-and triple-deck complexes. The sandwichtype complexes together with the metal free porphyrin were characterized using electronic absorption, IR and 1 H NMR spectroscopy in addition to elemental analysis. The electrochemical behaviour of the sandwich complexes was investigated by cyclic voltammetry and differential pulse voltammetry in CH 2 Cl 2 , their photophysical properties were studied in comparison to those of the metal free porphyrin ligand. Fluorescence quenching observed was tentatively attributed to efficient and rapid energy transfer from the pyrenyl groups to porphyrin followed by electron transfer from porphyrin to phthalocyanine.

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Author

Ning Sheng; Pei-Hua Zhu; Chang-Qin Ma; Jian-Zhuang Jiang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0143-7208)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)