C        2 Symmetrical double chromophores: cooperativity effects in lanthanide ion complexation

Dario Pasini; Pier Paolo Righetti; Michele Zema

doi:10.1039/B403494E

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C₂ Symmetrical double chromophores: cooperativity effects in lanthanide ion complexation†

Dario Pasini,*^a Pier Paolo Righetti*^a and Michele Zema^b

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* Corresponding authors

^a Department of Organic Chemistry, University of Pavia, Viale Taramelli, 10, 27100 Pavia, Italy
E-mail: dario.pasini@unipv.it
Fax: 39 0382 507323
Tel: 39 0382 507312

^b Department of Earth Sciences, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy
E-mail: zema@crystal.unipv.it
Fax: 39 0382 505890
Tel: 39 0382 505869

Abstract

We describe the synthesis and characterization of C₂ symmetrical double chromophores, in which two identical chromophores are linked through ethylene glycol spacers of increasing lengths. The complexation ability of the trans stereopure form for each diastereoisomeric pair showed how the two chromophores, when the spacer unit is comprised of a diethylene or a triethylene glycol moiety, are able to interact in a positive way, stabilizing the resulting complexes when compared with single chromophore analogous compounds.

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Article information

DOI: https://doi.org/10.1039/B403494E
Article type: Paper
Submitted: 08 Mar 2004
Accepted: 16 Apr 2004
First published: 18 May 2004

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Org. Biomol. Chem., 2004,2, 1764-1769

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C ₂ Symmetrical double chromophores: cooperativity effects in lanthanide ion complexation

D. Pasini, P. P. Righetti and M. Zema, Org. Biomol. Chem., 2004, 2, 1764 DOI: 10.1039/B403494E

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Organic & Biomolecular Chemistry