Next Article in Journal
Polymer-Magnetic Composite Particles of Fe3O4/Poly(o-anisidine) and Their Suspension Characteristics under Applied Magnetic Fields
Previous Article in Journal
Improved Mechanical and Electrochemical Properties of XNBR Dielectric Elastomer Actuator by Poly(dopamine) Functionalized Graphene Nano-Sheets
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle

New Triphenylamine-Based Oligomeric Schiff Bases Containing Tetraphenylsilane Moieties in the Backbone

1
Research Laboratory for Organic Polymers, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile
2
Department of Inorganic Chemistry, Pontificia Universidad Católica de Chile, P.O. Box 306, Post 22, Santiago, Chile
3
Laboratory of Nanotechnology and Advanced Materials, Universidad Tecnológica Metropolitana, P.O. Box 9845, Post 21, Santiago, Chile
4
Laboratorio de Materiales Orgánicos y Poliméricos, Department of Chemistry, Faculty of Chemistry, Universidad de Tarapacá, P.O. Box 7-D, Arica, Chile
5
UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago, Chile
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(2), 216; https://doi.org/10.3390/polym11020216
Received: 2 January 2019 / Revised: 18 January 2019 / Accepted: 24 January 2019 / Published: 27 January 2019
  |  
PDF [2482 KB, uploaded 27 January 2019]
  |  

Abstract

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 π-conjugation across the main chain. The results suggest that silicon-containing polySBs are promising wide-band-gap semiconductors materials for optoelectronic applications. View Full-Text
Keywords: tetraphenylsilane; triphenylamine; oligomeric Schiff bases; optoelectronic applications tetraphenylsilane; triphenylamine; oligomeric Schiff bases; optoelectronic applications
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Sobarzo, P.A.; González, A.F.; Schott, E.; Tagle, L.H.; Tundidor-Camba, A.; González-Henríquez, C.; Jessop, I.A.; Terraza, C.A. New Triphenylamine-Based Oligomeric Schiff Bases Containing Tetraphenylsilane Moieties in the Backbone. Polymers 2019, 11, 216.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top