TY - JOUR
T1 - New triphenylamine-based oligomeric Schiff bases containing tetraphenylsilane moieties in the backbone
AU - Sobarzo, Patricio A.
AU - González, Alexis F.
AU - Schott, Eduardo
AU - Tagle, Luis H.
AU - Tundidor-Camba, Alain
AU - González-Henríquez, Carmen
AU - Jessop, Ignacio A.
AU - Terraza, Claudio A.
N1 - Publisher Copyright:
© 2018 by the authors.
PY - 2019/1/27
Y1 - 2019/1/27
N2 - Three new triphenylamine-based oligomeric Schiff bases (polySB1, polySB2 and polySB3) containing tetraphenylsilane core (TPS-core) in the main chain were obtained from TPS-core-based diamines and bis(4-formylphenyl)phenylamine by a high-temperature polycondensation reaction. These new oligomers were structurally characterized by FT-IR, NMR and elemental analysis. All polySBs were highly soluble in common organic solvents, such as chloroform, tetrahydrofuran and chlorobenzene. Samples showed moderate molecular average molecular weight (Mw) and a high thermal stability above 410 °C. Likewise, polySBs showed absorption near 400 nm in the UV-vis range and photoluminescence. The HOMO levels and band-gap values were found in the ranges of -6.06 to -6.18 eV and 2.65-2.72 eV, respectively. The lowest band-gap value was observed for polySB2, which could be attributed to a more effective p-conjugation across the main chain. The results suggest that silicon-containing polySBs are promising wide-band-gap semiconductors materials for optoelectronic applications.
AB - Three new triphenylamine-based oligomeric Schiff bases (polySB1, polySB2 and polySB3) containing tetraphenylsilane core (TPS-core) in the main chain were obtained from TPS-core-based diamines and bis(4-formylphenyl)phenylamine by a high-temperature polycondensation reaction. These new oligomers were structurally characterized by FT-IR, NMR and elemental analysis. All polySBs were highly soluble in common organic solvents, such as chloroform, tetrahydrofuran and chlorobenzene. Samples showed moderate molecular average molecular weight (Mw) and a high thermal stability above 410 °C. Likewise, polySBs showed absorption near 400 nm in the UV-vis range and photoluminescence. The HOMO levels and band-gap values were found in the ranges of -6.06 to -6.18 eV and 2.65-2.72 eV, respectively. The lowest band-gap value was observed for polySB2, which could be attributed to a more effective p-conjugation across the main chain. The results suggest that silicon-containing polySBs are promising wide-band-gap semiconductors materials for optoelectronic applications.
KW - Oligomeric Schiff bases
KW - Optoelectronic applications
KW - Tetraphenylsilane
KW - Triphenylamine
UR - https://www.scopus.com/pages/publications/85060619249
U2 - 10.3390/polym11020216
DO - 10.3390/polym11020216
M3 - Article
AN - SCOPUS:85060619249
SN - 2073-4360
VL - 11
JO - Polymers
JF - Polymers
IS - 2
M1 - 216
ER -