Ultrafast spectroscopy measurements of chemical dynamics of liquids

• Grant number: 08/10593-0
• Support Opportunities: Research Grants - Young Investigators Grants
• Start date: April 01, 2009
• End date: November 30, 2013
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: René Alfonso Nome Silva
• Grantee: René Alfonso Nome Silva
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated scholarship(s): 12/03647-2 - What is the role of the environment on electronic energy transfer in conjugated polymers?, BP.IC; 11/12531-5 - Software and hardware development for femtosecond spectroscopy, BP.IC; 09/07524-0 - Measuring chemical dynamics in liquids with ultrafast spectroscopy, BP.JP

Abstract

We plan to set up an ultrafast spectroscopy instrument and use it to study molecular dynamics of chemical systems in the condensed phase. Initially, we plan to design and build lab infra-structure for time-resolved spectroscopy experiments, as well as buying a Ti:safire-based femtosecond pulse amplifier. This light source will be used to build various nonlinear spectroscopy instruments: (i) time-resolved optical Kerr effect (OKE) spectroscopy; (ii) optical parametric amplifier; and (iii) pump-probe, time-resolved fluorescence, and polarization anisotropy techniques. In the second part of the Project, we plan to apply the above mentioned system to study chemical processes in the condensed phase. Using the OKE technique, we will study mixtures of carbon disulfide with biodiesel components such as ethyl stearate, methyl linoleate, and diesel. This study will be followed by the measurement of time-resolved spectra associated with charge transfer processes and proton transfer processes. The study of such systems in a range of solvents will allow us to investigate the role of the solvent in these fundamental chemical processes. The results will be analyzed both in time- and frequency-domain with the goal of measuring the fundamental time-scales involved and the relevant spectra associated with intra- and intermolecular interactions. (AU)

Scientific publications

(5)

(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)

FERBONINK, GUILHERME F.; SPADA, EDNA R.; DOS SANTOS, DIEGO P.; SARTORELLI, MARIA L.; NOME, RENE A.. Ultrafast Dynamics of Au Nanopyramid Interfaces Prepared by Nanosphere Lithography: Effect of Substrate Chemical Composition. Journal of the Brazilian Chemical Society, v. 27, n. 2, p. 423-433, FEB 2016. (08/10593-0)

LOIOLA, PAULA T. C.; DIAS, WANDERLEIA D.; SOUZA, MONIQUE S.; FERBONINK, GUILHERME F.; ZANIOLO, MATHEUS G.; CERINI, MARIA F.; ATVARS, TERESA D. Z.; NOME, RENE A.. Ethyl stearate: ethanol binary mixtures investigated by ultrafast OKE spectroscopy, optical microscopy, dynamic light scattering, and rheology. JOURNAL OF PHYSICAL ORGANIC CHEMISTRY, v. 27, n. 4, SI, p. 316-321, APR 2014. (11/12531-5, 12/01425-2, 08/10593-0)

FRANCO, JULIANA C.; GONCALVES, GRASIELE; SOUZA, MONIQUE S.; ROSA, SAMANTHA B. C.; THIEGUE, LARISSA M.; ATVARS, TERESA D. Z.; ROSA, PAULO T. V.; NOME, RENE A.. Towards in situ fluorescence spectroscopy and microscopy investigations of asphaltene precipitation kinetics. Optics Express, v. 21, n. 25, p. 30874-30885, DEC 16 2013. (11/20143-5, 11/20144-1, 12/15018-0, 12/14987-9, 08/10593-0)

NOME, RENE A.. Ultrafast dynamics of solvation: the story so far. Journal of the Brazilian Chemical Society, v. 21, n. 12, p. 2189-2204, 2010. (08/10593-0)

LOIOLA, PAULA T. C.; DIAS, WANDERLEIA D.; SOUZA, MONIQUE S.; FERBONINK, GUILHERME F.; ZANIOLO, MATHEUS G.; CERINI, MARIA F.; ATVARS, TERESA D. Z.; NOME, RENE A.. Ethyl stearate: ethanol binary mixtures investigated by ultrafast OKE spectroscopy, optical microscopy, dynamic light scattering, and rheology. JOURNAL OF PHYSICAL ORGANIC CHEMISTRY, v. 27, n. 4, p. 6-pg., 2014-04-01. (08/10593-0, 12/01425-2, 11/12531-5)