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Titolo:
Inorganic-organic nanocomposite materials based on macrocyclic compounds
Autore:
Ruiz-Hitzky, E; Casal, B; Aranda, P; Galvan, JC;
Indirizzi:
CSIC, Inst Ciencia Mat, Madrid 28049, Spain CSIC Madrid Spain 28049CSIC, Inst Ciencia Mat, Madrid 28049, Spain
Titolo Testata:
REVIEWS IN INORGANIC CHEMISTRY
fascicolo: 1-2, volume: 21, anno: 2001,
pagine: 125 - 159
SICI:
0193-4929(200101/06)21:1-2<125:INMBOM>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPOUNDS CROWN-ETHERS; ION-SELECTIVE ELECTRODES; FIELD-EFFECT TRANSISTORS; GEL-DERIVED MEMBRANES; M = MN; SILICA-GEL; FACILITATED TRANSPORT; LAYER SILICATES; NEUTRAL CARRIER; DRY MEDIA;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
115
Recensione:
Indirizzi per estratti:
Indirizzo: Ruiz-Hitzky, E CSIC, Inst Ciencia Mat, Madrid 28049, Spain CSIC Madrid Spain 28049 Ciencia Mat, Madrid 28049, Spain
Citazione:
E. Ruiz-Hitzky et al., "Inorganic-organic nanocomposite materials based on macrocyclic compounds", REV INORG C, 21(1-2), 2001, pp. 125-159

Abstract

The synthesis, structural characterisation, properties and applications ofinorganic-organic hybrid materials (nanocomposites) containing macrocyclesare reviewed. Three different ways to prepare such materials are discussed: i) intercalation in layered host solids, ii) entrapping into inorganic matrices generated by sol-gel, and iii) grafting of macrocycles on inorganic surfaces. Macrocyclic compounds, as crown ethers and cryptands, were the guest organic species used in intercalation processes. The host inorganic solids were layered silicates, vanadium pentoxide xerogel, transition-metal dichalcogenides and phosphorus trichalcogenides. The resulting nanocompositespresent synergic host-guest properties useful for applications as solid electrolytes, ion-selective membranes and electrochemical sensors. Alternatively, nanocomposites based on macrocycles can be obtained by entrapping of such compounds into inorganic matrices generated by sol-gel, using differentorganosilanes as precursors (TMOS, TEOS, ETEOS, MAPTMS, etc). Electrodes based on such systems are sensitive to alkaline cations, lead, silver and ammonium ions giving linear potentiometric responses in a wide concentration range. Finally, the grafting of macrocycles on inorganic surfaces is also discussed. Silica can be functionalised by anchorage of macrocycles able to confer specific properties and reactivity to the inorganic substrate. The main applications of this last class of nanocomposites have been found for chromatography purposes, including separation of cations, anions and non-electrolytic organic compounds.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/17 alle ore 09:15:43