Synthesis of dimethyl- and diphenylsilane-based oligo(azine)s: Thermal, optical, electronic, and morphological properties

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dc.contributor.authorSobarzo, Patricio A.
dc.contributor.authorJessop, Ignacio A.
dc.contributor.authorPerez, Yasmin
dc.contributor.authorHauyon, Rene A.
dc.contributor.authorVelazquez-Tundidor, Maria V.
dc.contributor.authorMedina, Jean
dc.contributor.authorGonzalez, Alexis
dc.contributor.authorGarcia, Luis E.
dc.contributor.authorGonzalez-Henriquez, Carmen M.
dc.contributor.authorColl, Deysma
dc.contributor.authorOrtiz, Pablo A.
dc.contributor.authorTundidor-Camba, Alain
dc.contributor.authorTerraza, Claudio A.
dc.date.accessioned2025-01-20T21:04:02Z
dc.date.available2025-01-20T21:04:02Z
dc.date.issued2022
dc.description.abstractFour new oligo(azine)s were synthesized from dimethyldiphenylsilane and tetraphenylsilane core-based dialdehydes and hydrazine by high-temperature polycondesation and proposed as materials for optoelectronic applications. The oligo(azine)s were characterized by EA, FT-IR, and NMR. Although most of samples were poorly soluble, TPS-containing PAZ-4 was soluble in aprotic polar solvents. According to SEC and FT-IR studies, the samples were oligomers with up to five repeating units long. TGA showed highly stable samples with TDT10% over 420 degrees C except for PAZ-1 that contains a DMS core along with phenyl units, and thus, the lowest carbon content in the series. From DSC analysis, the substitution of phenyl groups in PAZ-1/3 by biphenyl moieties in PAZ-2/4 allowed to obtain oligo(azine)s with lower T-g values. PAZ-4 showed a UV-A absorption with optical band-gap values of 2.91 and 2.65 eV from UV-vis (solution) and DRS (films), respectively. PL analysis showed a violet emission. PAZ-4 showed resistivity of 29.24 omega cm, similar to wide-band gap materials. Their contact angle measurements showed a critical surface tension of 42.29 dynes/cm, revealing its hydrophobicity. AFM analysis indicated that the PAZ-4 films had homogeneous surfaces. Young's modulus close to 4.46 GPa was established by microindentation for the PAZ-4 thin-films.
dc.fuente.origenWOS
dc.identifier.doi10.1002/app.52911
dc.identifier.eissn1097-4628
dc.identifier.issn0021-8995
dc.identifier.urihttps://doi.org/10.1002/app.52911
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93205
dc.identifier.wosidWOS:000831063000001
dc.issue.numero38
dc.language.isoen
dc.revistaJournal of applied polymer science
dc.rightsacceso restringido
dc.subjectoptical and photovoltaic applications
dc.subjectoptical properties
dc.subjectpolycondensation
dc.titleSynthesis of dimethyl- and diphenylsilane-based oligo(azine)s: Thermal, optical, electronic, and morphological properties
dc.typeartículo
dc.volumen139
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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