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Structural and electronic characterization of biogenic molecules emitted by the Amazon flora

Grant number: 21/09016-3
Support type:Regular Research Grants
Duration: October 01, 2021 - September 30, 2023
Field of knowledge:Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
Principal researcher:Kaline Rabelo Coutinho
Grantee:Kaline Rabelo Coutinho
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Assoc. researchers: Antonio Rodrigues da Cunha

Abstract

This project aims to study aerosol particles composed of biogenic molecules emitted by the Amazonian flora using modern and robust methodology to identify the main interactions of biogenic molecules in the presence of pollutants in cloud drops. Thus, it is intended to clarify several open questions about the effects of pollutants on the properties of droplets, such as the forms of aggregation of biogenic molecules, the effects of pollutants and water molecules, as well as the role in absorption and scattering of solar radiation by these particles in the atmosphere. The combination of experimental techniques, such as spectrometric (NMR, GC-MS, IR and UV-Vis), fluorescence, differential scanning calorimetry (DSC), dynamic light scattering (DLS) and electronic paramagnetic resonance (EPR), and theoretical methods with quantum calculations and classical and ab initio atomistic simulations, enable the more detailed exploration of structural and electronic properties of molecular clusters formed by biogenic molecules, pollutants and water. The biogenic molecules initially studied will belong to the class of terpenoids and alkaloids and the pollutants will be carbon dioxide (CO2), ozone (O3), methane (CH4) and nitrous oxide (N2O). The biogenic molecules have already been isolated in research laboratories of collaborating groups in the Amazon region: Federal University of the South and Southeast of Pará (UNINESSPA) and UFMA. (AU)

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