CHEMICOPHYSICAL CHARACTERIZATION OF THE POLY(TETRAHALO-P-PHENYLENESELENIDE)S SEMICONDUCTING POLYMERS

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dc.contributor.authorGODOY, A
dc.contributor.authorBERNEDE, JC
dc.date.accessioned2025-01-23T19:21:43Z
dc.date.available2025-01-23T19:21:43Z
dc.date.issued1993
dc.description.abstractChemico-physical characterization of semiconducting polymers having selenium in the chain have been done by XPS, microprobe analysis and optical absorption. The binding energy of Se3d peak shows that there are positive partial charges on the selenium atoms. The high chemical shift of the C1s binding energy in the case of C-Br is attributed to the s-character of bromine when bound to carbon. This s-character gives an effective electronegativity higher than Pauling's value. After doping, the binding energy of the dopant (Cl or I) corresponds to the anion position. Therefore we can imagine that during doping there is polaron or bipolaron formation. The hypothesis of polaron formation is conforted by optical absorption experimental results. The homogeneity of the powder has been checked by microprobe analysis. The relative concentrations are nearly the one expected.
dc.fuente.origenWOS
dc.identifier.issn0021-7689
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/98848
dc.identifier.wosidWOS:A1993LV60800005
dc.issue.numero7-8
dc.language.isoen
dc.pagina.final1503
dc.pagina.inicio1491
dc.revistaJournal de chimie physique et de physico-chimie biologique
dc.rightsacceso restringido
dc.subjectSEMICONDUCTING POLYMERS
dc.subjectX-RAY PHOTOELECTRON SPECTROSCOPY
dc.subjectOPTICAL ABSORPTION
dc.subjectHALOGEN DOPANT
dc.subjectMICROPROBE ANALYSIS
dc.titleCHEMICOPHYSICAL CHARACTERIZATION OF THE POLY(TETRAHALO-P-PHENYLENESELENIDE)S SEMICONDUCTING POLYMERS
dc.typeartículo
dc.volumen90
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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