vai_a_storia   vai_a_organizzazione   vai_a_sedi   vai_a_personale   Area Riservata
    English English Version  

High Pressure Polymerization in a Confined Space: Conjugated Chain/Zeolite Nanocomposites

  Articoli su Riviste JCR/ISI  (anno 2014)

Autori:  Scelta D., Ceppatelli M., Santoro M., Bini R., Gorelli F. A., Perucchi A., Mezouar M., van der Lee A., Haines J

Affiliazione Autori:  European Lab Non Linear Spect LENS, I-50019 Sesto Fiorentino, Italy; CNR, ICCOM, I-50019 Sesto Fiorentino, Italy; CNR, INO, I-50019 Sesto Fiorentino, Italy; Univ Firenze, Dipartimento Chim Ugo Schiff, I-50019 Sesto Fiorentino, Italy; Elettra Sincrotrone Trieste SCpA, I-34149 Basovizza, Italy; European Synchrotron Radiat Facil, F-38343 Grenoble, France; Univ Montpellier 2, CNRS, UMR 5635, Inst Europeen Membranes Montpellier, F-34095 Montpellier 5, France; Univ Montpellier 2, CNRS, UMR 5253, Inst Charles Gerhardt Montpellier,Equipe C2M, F-34095 Montpellier 5, France

Riassunto:  Conducting polymers are, one of the most promising classes of materials for enabling technologies such as solar energy conversion, organic electronics, and opto-electronics. The text-book conducting polymer is polyacerylene, which is difficult to synthesize in the all-conjugated form and also reacts with atmospheric moisture. Zeolites, widely used in diverse fields, could provide the ideal microporous framework capable of driving the ordered polymerization of acetylene. Also, the embedded polymer would be chemically protected by the zeolite, resulting in a unique organic/inorganic, conducting nanocomposite. We polymerized acetylene in the channels of a noncatalytic, pure SiO2 zeolite, silicalite in a diamond anvil cell, using only high pressure (similar to 4 GPa) as the driving force. A unique nanocomposite was obtained and recovered at ambient pressure, made of conjugated chains embedded in the silicalite as determined by combining different techniques: IR spectroscopy, Raman spectroscopy and microscopy, and X-ray diffraction. We thus made the first step toward the synthesis of a new generation of conducting polymers embedded in nanostructured hosts and also added to the development of mechanochemistry in highly confined systems.

Volume n.:  26 (7)      Pagine da: 2249  a: 2255
Ulteriori informazioni:  We are grateful to our collegues Samuele Fanetti and Marco Pagliai for their precious help in Raman data processing. We acknowledge the ESRF and Elettra for provision of beam time at ID27 and SISSI, respectively. We also thank the support from the European Union (European Laboratory for non Linear Spectroscopy (LENS) Contract G.A. No. 284464 LASERLABEUROPE), the Ente Cassa di Risparmio di Firenze, the Deep Carbon Observatory initiative (Grant from the Alfred P. Sloan Foundation for the project entitled \"Physics and Chemistry of Carbon at Extreme Conditions\"), and the Agence Nationale de la Recherche (Contract ANR-09-BLAN-0018-01). One of us, M.S., thanks the \"Pole Chimie Balard\" of Montpellier for having supported his research as an Invited Professor at the Institut Charles Gerhardt in 2013, in the framework of the Total chair.
DOI: 10.1021/cm500061f

*Impact Factor della Rivista: (2014) 8.354   *Citazioni: 29
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

Riferimenti visionabili in IsiWeb of Knowledge: (solo per sottoscrittori)
Per visualizzare la scheda dell'articolo su IsiWeb: Clicca qui
Per visualizzare la scheda delle Citazioni dell'articolo su IsiWeb: Clicca qui

INO © Istituto Nazionale di Ottica - Largo Fermi 6, 50125 Firenze | Tel. 05523081 Fax 0552337755 - P.IVA 02118311006     P.E.C.    Info