Vibrational spectroscopy and physico-chemical properties of hypergolic ionic liquids
Spectroscopy signal enhancement: nanomaterials, theory, and computer simulation
Multi-user equipment approved in grant 2022/11983-4: darkfield microscope
| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, Lab Espectroscopia Mol, USP, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | Chemical Physics Letters; v. 784, DEC 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Interactions concerning the high SO2 absorption capacity in 1-butyl-3-methyilimidazolium tricyanomethanide (BMITCM) were analyzed through Raman spectroscopy. The SO2 symmetric stretching band, nu(s)(SO2), remained equal in shape and wavenumber regardless the SO2 molar fraction, suggesting no specific interaction between TCM and SO2. However, by increasing the Raman excitation energy from 568 to 405 nm, a pre-resonance condition was reached, where a shifting and broadening of nu(s)(SO2) is noticed. Such results evidence solvation states where charge transfer interactions between TCM and SO2 prevail, corroborating the high absorption capacity of TCM based ionic liquids. (AU) | |
| FAPESP's process: | 16/21070-5 - Vibrational spectroscopy with spatial resolution |
| Grantee: | Mauro Carlos Costa Ribeiro |
| Support Opportunities: | Research Projects - Thematic Grants |