AFM, SEM and GIXRD studies of thin films of red polycarbazolyldiacetylenes (Articolo in rivista)

Type
Label
  • AFM, SEM and GIXRD studies of thin films of red polycarbazolyldiacetylenes (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.susc.2004.02.011 (literal)
Alternative label
  • Marina Alloisio (b); Silvia Sottini (c); Pietro Riello (d); Emilia Giorgetti (e); Giancarlo Margheri (f); Carla Cuniberti (b); Giovanna Dellepiane (a,b) (2004)
    AFM, SEM and GIXRD studies of thin films of red polycarbazolyldiacetylenes
    in Surface science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Marina Alloisio (b); Silvia Sottini (c); Pietro Riello (d); Emilia Giorgetti (e); Giancarlo Margheri (f); Carla Cuniberti (b); Giovanna Dellepiane (a,b) (literal)
Pagina inizio
  • 68 (literal)
Pagina fine
  • 75 (literal)
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  • 554 (literal)
Rivista
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  • fasc. (1). Elsevier. (literal)
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  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (a) INFM, Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso, 31, I-16146 Genova, Italy (b) INSTM, Dipartimento di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso, 31, I-16146 Genova, Italy (c) INFM, Dipartimento di Fisica, Università di Parma, Parco Area delle Scienze 7a, I-43100 Parma, Italy (d) Dipartimento di Chimica Fisica, Università di Venezia, Via Torino, 155, I-30170 Venezia Mestre, Italy (e) INSTM, IFAC-CNR, Via Panciatichi, 64, I-50127 Firenze, Italy (f) IFAC-CNR, Via Panciatichi, 64, I-50127 Firenze, Italy (literal)
Titolo
  • AFM, SEM and GIXRD studies of thin films of red polycarbazolyldiacetylenes (literal)
Abstract
  • In this paper we report the results of a morphological and structural investigation on film properties of a soluble polydiacetylene, the poly[1,6-bis(3,6-dihexadecyl-N-carbazolyl)-2,4-hexadiyne] (polyDCHD-HS). The red films of this polymer, prepared by standard spin-coating techniques, revealed absence of linear dichroism and birefringence in contrast with the ordered mesophases detected by powder X-ray studies. In order to interpret the optical behavior of this polymer, we performed AFM and SEM studies of polyDCHD-HS films spun on hydrophylic and hydrophobic glass substrates. We found the presence of surfaces organized in rod-like particles, more regularly oriented on the hydrophylic substrate. GIXRD studies, carried out on films sufficiently thick to allow the observation of the diffraction pattern, reveled the presence of a lamellar structure with a spacing of 3.22 nm. The low intensity of the diffraction peaks and the isotropic linear optical properties of the films show that the lamellar mesophases are not extended over large areas. These findings were compared with the data obtained from AFM and SEM studies on films of two other polydiacetylenes, the poly[1-(3,6-dihexadexyl-N-carbazolyl)-6-(N-carbazolyl)-2,4-hexadyine] (polya-DCHD) and the poly[1,6-bis(3,6-dipalmitoyl-N-carbazolyl)-2,4-hexadyine] (polyDPCHD), spun on hydrophylic glass substrate. The results confirmed the presence of nodular morphologies which seem to be a general characteristic of this class of materials. The particles organization appears instead related to the chemical nature of the substituents on the carbazolyl rings. (literal)
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