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Title: An oxacalix[2]arene[2]pyrimidine-bis(Zn-porphyrin) tweezer as a selective receptor towards fullerene C-70
Authors: Van Rossom, Wim
Kundrat, Ondrej
Ngo, Thien Huynh
Lhotak, Pavel
Dehaen, Wim
MAES, Wouter 
Issue Date: 2010
Source: TETRAHEDRON LETTERS, 51(18). p. 2423-2426
Abstract: An oxacalix[2]arene[2]pyrimidine-bis(Zn-II-porphyrin) conjugate was readily prepared via nucleophilic aromatic substitution of a phenolic AB(3)-Zn-porphyrin on the upper rim of a (1,3-alternate) 5,17-bis(methylsulfonyl)oxacalix[4]arene precursor. Efficient 1:1 complex formation between the 'jaws' bisporphyrin tweezer and fullerene C-70 was evidenced by H-1 NMR titrations (K = 3.0 x 10(4) M-1), while no detectable complexation could be observed with C-60. On the other hand, an analogous oxacalix[4]arene-bis(Cu-corrole) conjugate did not show any measurable (C-60 or C-70) fullerene binding. (C) 2010 Elsevier Ltd. All rights reserved.
Notes: [Kundrat, Ondrej; Lhotak, Pavel] Prague Inst Chem Technol, Dept Organ Chem, CR-16628 Prague 6, Czech Republic. [Van Rossom, Wim; Ngo, Thien Huynh; Dehaen, Wim; Maes, Wouter] Katholieke Univ Leuven, Dept Chem, B-3001 Louvain, Belgium. [Maes, Wouter] Hasselt Univ, Inst Mat Res IMO, Res Grp Organ & Bio Polymer Chem, B-3590 Diepenbeek, Belgium.;
Keywords: Oxacalixarenes; Porphyrinoids; Fullerenes; Supramolecular receptors
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ISSN: 0040-4039
e-ISSN: 1873-3581
DOI: 10.1016/j.tetlet.2010.02.137
ISI #: 000276972200010
Category: A1
Type: Journal Contribution
Validations: ecoom 2011
Appears in Collections:Research publications

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