Study of the structural behavior of the emeraldine salt and base forms of polyaniline with bulk and fibers morphology under high pressure

• Grant number: 13/05983-2
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Effective date (Start): September 09, 2013
• Effective date (End): June 08, 2014
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Marcia Laudelina Arruda Temperini
• Grantee: Marcelo Medre Nobrega
• Supervisor: Roberto Bini
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Research place: Università degli Studi di Firenze, Italy
• Associated to the scholarship: 10/18107-8 - Study of the structures of PANI nanofibers and their hybrids with metallic nanostructures by Raman epectroscopy, BP.DR

Abstract

The "Bolsa de Estágio de Pesquisa no Exterior (BEPE)" project is linked to the PhD project "Study of the structures of nanofibers of polyaniline (PANI) and their hybrids with metallic nanostructures by Raman spectroscopy", FAPESP grant 2010/18107-8. One of the topics of this project is to correlate the morphology of polyaniline with structural variations that occur due to variations in temperature and pressure. The period at the European Laboratory for Non-Linear Spectroscopy (LENS) with the orientation of Prof. Roberto Bini, aims to provide experimental and conceptual learning about Raman measurements as a function of pressure (up to 100 GPa), acquire experimental data of Raman vs pressure in fiber and bulk PANI systems, and open a perspective of collaboration with one of the best research centers in high pressure systems. It is expected that with these measurements will be observed conversions of segments in the polymer chains, doping-dedoping process and intra and inter-reactions, which can be detected by Raman spectroscopy. It is known that many applications of conducting polymers occurs under conditions outside of environmental conditions, this study will contribute significantly to the improvement of PhD project corresponding to the behavior under pressure of polyaniline with different morphologies. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

NOBREGA, MARCELO M.; IZUMI, CELLY M. S.; TEMPERINI, MARCIA L. A.. Probing molecular ordering in the HCl-doped polyaniline with bulk and nanofiber morphology by their thermal behavior. Polymer Degradation and Stability, v. 113, n. SI, p. 66-71, MAR 2015. (10/18107-8, 13/05983-2)

CITRONI, MARGHERITA; FANETTI, SAMUELE; BAZZICALUPI, CARLA; DZIUBEK, KAMIL; PAGLIAI, MARCO; NOBREGA, MARCELO MEDRE; MEZOUAR, MOHAMED; BINI, ROBERTO. Structural and Electronic Competing Mechanisms in the Formation of Amorphous Carbon Nitride by Compressing s-Triazine. Journal of Physical Chemistry C, v. 119, n. 51, p. 28560-28569, DEC 24 2015. (10/18107-8, 13/05983-2)

NOBREGA, MARCELO M.; CEPPATELLI, MATTEO; TEMPERINI, MARCIA L. A.; BINI, ROBERTO. Pressure-Induced Reactivity in the Emeraldine Salt and Base Forms of Polyaniline Probed by FTIR and Raman. Journal of Physical Chemistry C, v. 118, n. 47, p. 27559-27566, NOV 27 2014. (10/18107-8, 13/05983-2)