Issue 6, 2003

New dimeric supramolecular structure of mixed (phthalocyaninato)(porphyrinato)europium(iii) sandwiches: preparation and spectroscopic characteristics

Abstract

The mixed double-decker Eu[Pc(15C5)4](TPP) (1) was obtained by base-catalysed tetramerisation of 4,5-dicyanobenzo-15-crown-5 using the half-sandwich complex Eu(TPP)(acac) (acac = acetylacetonate), generated in situ, as the template. For comparative studies, the mixed triple-decker complexes Eu2[Pc(15C5)4](TPP)2 (2) and Eu2[Pc(15C5)4]2(TPP) (3) were also synthesised by the raise-by-one-story method. These mixed ring sandwich complexes were characterised by various spectroscopic methods. Up to four one-electron oxidations and two one-electron reductions were revealed by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). As shown by electronic absorption and infrared spectroscopy, supramolecular dimers (SM1 and SM3) were formed from the corresponding double-decker 1 and triple-decker 3 in the presence of potassium ions in MeOH/CHCl3.

Graphical abstract: New dimeric supramolecular structure of mixed (phthalocyaninato)(porphyrinato)europium(iii) sandwiches: preparation and spectroscopic characteristics

Supplementary files

Article information

Article type
Paper
Submitted
14 Jan 2003
Accepted
07 Apr 2003
First published
22 Apr 2003

J. Mater. Chem., 2003,13, 1333-1339

New dimeric supramolecular structure of mixed (phthalocyaninato)(porphyrinato)europium(III) sandwiches: preparation and spectroscopic characteristics

M. Bai, M. Bao, C. Ma, D. P. Arnold, M. T. M. Choi, D. K. P. Ng and J. Jiang, J. Mater. Chem., 2003, 13, 1333 DOI: 10.1039/B300529A

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