This paper describes the synthesis and characterization of novel covalently bound fullerene ylidene malonate dyads in which the linker between the two units is a di-, tri-, or tetraethylene glycol unit. The synthesis involves a stepwise, convergent addition of the two components to bis(malonate crown ethers) of increasing overall dimensions through (i) Knoevenagel condensation with (dimethylamino)benzaldehyde and (ii) subsequent Bingel functionalization of the free malonate moiety with C-60. These dyads have been spectroscopically characterized and studied by UV/Vis spectroscopy. Their ability to form stable complexes with europium triflate, thus forming a complex three-component supramolecular system with UV/Vis absorption characteristics clearly dependent on the overall distance between the interacting units, has been assessed quantitatively.

Fullerene Ylidene Malonate Supramolecular Triads

GARLASCHELLI, LUIGI;PASINI, DARIO;RIGHETTI, PIER PAOLO
2002-01-01

Abstract

This paper describes the synthesis and characterization of novel covalently bound fullerene ylidene malonate dyads in which the linker between the two units is a di-, tri-, or tetraethylene glycol unit. The synthesis involves a stepwise, convergent addition of the two components to bis(malonate crown ethers) of increasing overall dimensions through (i) Knoevenagel condensation with (dimethylamino)benzaldehyde and (ii) subsequent Bingel functionalization of the free malonate moiety with C-60. These dyads have been spectroscopically characterized and studied by UV/Vis spectroscopy. Their ability to form stable complexes with europium triflate, thus forming a complex three-component supramolecular system with UV/Vis absorption characteristics clearly dependent on the overall distance between the interacting units, has been assessed quantitatively.
2002
The Organic Chemistry/Polymer Science category includes resources concerned with the related fields of organic chemistry and polymer science. The organic chemistry resources deal with compounds of carbon with the exception of certain simple ones, such as the carbon oxides, carbonates, cyanides and cyanates (see Inorganic & Nuclear Chemistry). This category includes research on synthetic and natural organic compounds that may include other elements, such as hydrogen and oxygen, but also nitrogen, halogens, sulphur and phosphorous. Resources concerned with hydrocarbons, organic compounds containing only the elements carbon and hydrogen, are also included in this category. Examples are the alkanes, alkenes, alkynes and aromatics, such as benzene and naphthalene. Polymer science includes all resources dealing with the study, production and technology of polymers, which are compounds composed of very large molecules made up of repeating molecular units (monomers). Polymers may be natural substances, such as polysaccharides or proteins, or synthetic materials, such as nylon or polyethylene.
Esperti anonimi
Inglese
Internazionale
STAMPA
20
3385
3392
8
COVER ARTICLE
PUSH-PULL CHROMOPHORES; FULLERENES; MOLECULAR RECOGNITION; SUPRAMOLECULAR CHEMISTRY
no
4
info:eu-repo/semantics/article
262
Garlaschelli, Luigi; Messina, Ivano; Pasini, Dario; Righetti, PIER PAOLO
1 Contributo su Rivista::1.1 Articolo in rivista
none
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/132247
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