Poly(4-methoxyaniline) composites: investigating structure-property relationship towards semiconducting applications.
MENEZES, Diogo de Carvalho; SANTIAGO, Pedro Henrique de Oliveira; SOUZA, Paulo Nunes; ANDRADE, Marcelo Barbosa de; OLIVEIRA, Cristiano Luis Pinto; SOUZA, Sérgio Michielon de; SANCHES, Edgar Aparecido; MASCARENHAS, Yvonne Primerano.
MENEZES, Diogo de Carvalho; SANTIAGO, Pedro Henrique de Oliveira; SOUZA, Paulo Nunes; ANDRADE, Marcelo Barbosa de; OLIVEIRA, Cristiano Luis Pinto; SOUZA, Sérgio Michielon de; SANCHES, Edgar Aparecido; MASCARENHAS, Yvonne Primerano.
Abstract: Conjugated polymers are essential materials for the organic optoelectronic industry, serving a pivotal role in cutting-edge technologies. In this study, we conducted an integrated characterization approach, including spectroscopic techniques coupled with X-ray diffraction analysis to explore the structure-property relationship of poly(4-methoxyaniline), commonly referred to as poly(p-anisidine) or PPA, along with two distinct ceramic composites: PPA/a-Al2O3 and PPA/Eu2O3. From powder X-ray diffraction analysis, a triclinic unit cell in space group P1 is proposed, after the whole powder pattern decomposition (WPPD) refinement is employed for the semicrystalline regions of the polymeric phases. Fractal-like structures are observed, following analysis of small-angle X-ray scattering (SAXS) data and scanning electron microscopy (SEM) from which we could infer the approximate sizes of the fractal clusters. Pure PPA displays a glass transition temperature (Tg) of approximately 80°C and an electrical conductivity slightly above 10-5 S/cm. In contrast, the composite materials do not exhibit a glass transition temperature but perform better in terms of crystallinity and thermal stability. PPA/Eu2O3 present conductivity enhancement exceeding tenfold, surpassing 10-4 S/cm. These findings provide the baseline for further explorations on the development of organic electronic devices and sensors.
@article={003223263,author = {MENEZES, Diogo de Carvalho; SANTIAGO, Pedro Henrique de Oliveira; SOUZA, Paulo Nunes; ANDRADE, Marcelo Barbosa de; OLIVEIRA, Cristiano Luis Pinto; SOUZA, Sérgio Michielon de; SANCHES, Edgar Aparecido; MASCARENHAS, Yvonne Primerano.},title={Poly(4-methoxyaniline) composites: investigating structure-property relationship towards semiconducting applications},journal={Journal of Applied Polymer Science},note={v. 142, n. 1, p. e56313-1-e56313-24},year={2025}}