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Electrically conductive films made of pyrrole - formyl pyrrole by straightforward chemical copolymerization / Yusuke Hoshina in Industrial & engineering chemistry research, Vol. 51 N° 17 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5961–5966 Titre : Electrically conductive films made of pyrrole - formyl pyrrole by straightforward chemical copolymerization Type de document : texte imprimé Auteurs : Yusuke Hoshina, Auteur ; Takaomi Kobayashi, Auteur Année de publication : 2012 Article en page(s) : pp. 5961–5966 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Electrically  Films  Copolymerization  Pyrrole Résumé : Electrically conductive films were prepared by copolymerization of pyrrole (Py) and 2-formyl pyrrole (FPy) in the presence of trifluoroacetic acid (TFA) used as a catalyst in chloroform. Formation of the copolymer P(Py-co-FPy) films was examined, when the FPy monomer mole fractions was changed. The obtained films showed a metallic greenish black color and had electrical conductivity of 10–4 to 10–1 S/cm when I2 was doped in the copolymer films. As the mole fraction of the FPy increased from 0 to 0.5, the tensile strength of the films increased from 11.1 to 81.3 N/mm2. For analysis of the copolymerization, 1H NMR in deuterated chloroform was measured and the evidence was revealed that the formyl group of FPy was attacked by the acid catalyst before the copolymerization started. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300181s [article] Electrically conductive films made of pyrrole - formyl pyrrole by straightforward chemical copolymerization [texte imprimé] / Yusuke Hoshina, Auteur ; Takaomi Kobayashi, Auteur . - 2012 . - pp. 5961–5966. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5961–5966 Mots-clés : Electrically  Films  Copolymerization  Pyrrole Résumé : Electrically conductive films were prepared by copolymerization of pyrrole (Py) and 2-formyl pyrrole (FPy) in the presence of trifluoroacetic acid (TFA) used as a catalyst in chloroform. Formation of the copolymer P(Py-co-FPy) films was examined, when the FPy monomer mole fractions was changed. The obtained films showed a metallic greenish black color and had electrical conductivity of 10–4 to 10–1 S/cm when I2 was doped in the copolymer films. As the mole fraction of the FPy increased from 0 to 0.5, the tensile strength of the films increased from 11.1 to 81.3 N/mm2. For analysis of the copolymerization, 1H NMR in deuterated chloroform was measured and the evidence was revealed that the formyl group of FPy was attacked by the acid catalyst before the copolymerization started. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300181s

Mechanochemical preparation of 8 - hydroxyquinoline / hydroxyapatite hybrid nanocrystals and their photofunctional interfaces / Motohiro Tagaya in Industrial & engineering chemistry research, Vol. 51 N° 34 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 34 (Août 2012) . - pp. 11294-11300 Titre : Mechanochemical preparation of 8 - hydroxyquinoline / hydroxyapatite hybrid nanocrystals and their photofunctional interfaces Type de document : texte imprimé Auteurs : Motohiro Tagaya, Auteur ; Satoshi Motozuka, Auteur ; Takaomi Kobayashi, Auteur Année de publication : 2012 Article en page(s) : pp. 11294-11300 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Nanocrystal  Hydroxyapatite  Preparation Résumé : Hybrid nanoaystals of 8-hydroxyquinoline (8Hq) molecules and hydroxyapatite nanocrystals (HAp) were successfully prepared by a mechanochemical solid-state reaction. The hybrid nanocrystals exhibit a significant thermal stability and efficient photoluminescence peak at 500 nm, which were attributed to metal―ligand charge transfer at the interface between the oxygen atoms of 8Hq and the calcium ions of HAp, and the interfacial photofunctions were inechanochemically controlled. The interfacial bonding structures were also supported by a DV-Xa molecular orbital calculation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26299457 [article] Mechanochemical preparation of 8 - hydroxyquinoline / hydroxyapatite hybrid nanocrystals and their photofunctional interfaces [texte imprimé] / Motohiro Tagaya, Auteur ; Satoshi Motozuka, Auteur ; Takaomi Kobayashi, Auteur . - 2012 . - pp. 11294-11300. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 34 (Août 2012) . - pp. 11294-11300 Mots-clés : Nanocrystal  Hydroxyapatite  Preparation Résumé : Hybrid nanoaystals of 8-hydroxyquinoline (8Hq) molecules and hydroxyapatite nanocrystals (HAp) were successfully prepared by a mechanochemical solid-state reaction. The hybrid nanocrystals exhibit a significant thermal stability and efficient photoluminescence peak at 500 nm, which were attributed to metal―ligand charge transfer at the interface between the oxygen atoms of 8Hq and the calcium ions of HAp, and the interfacial photofunctions were inechanochemically controlled. The interfacial bonding structures were also supported by a DV-Xa molecular orbital calculation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26299457