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AbstractAbstract
[en] Highlights: • LIF spectra of p-fluorophenol-methanol 1:1 complex are measured for the first time. • The spectra are largely different compared to that of p-fluorophenol-H2O complex. • Bands for five intermolecular vibrations appear in excitation and emission spectra. • Fermi resonance splits the intermolecular stretching band in the excitation spectrum. • Emission spectra show very low threshold for S1 state vibrational energy relaxation. Low-frequency intermolecular vibrations in S0 and S1 states of p-fluorophenol (pFP) methanol binary complex have been studied using laser induced fluorescence (LIF) spectroscopy in a supersonic jet expansion. Vibrational fundamentals of five such modes show up in fluorescence excitation (FE) spectrum, and corresponding ground state frequencies are obtained measuring disperse fluorescence (DF) spectra. Signatures of strong coupling between the hydrogen bond stretching fundamental (σ01) and a ring mode of pFP moiety in S1 state are revealed. In comparison with the analogous pFP-water complex, the present system displays very low threshold (∼170 cm−1) for vibrational energy relaxation in S1 state.
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S0009261417301690; Available from http://dx.doi.org/10.1016/j.cplett.2017.02.059; Copyright (c) 2017 Published by Elsevier B.V.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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ALCOHOLS, ALKALI METAL COMPOUNDS, ELEMENTS, EMISSION SPECTROSCOPY, ENERGY LEVELS, ENERGY-LEVEL TRANSITIONS, FLUORIDES, FLUORINE COMPOUNDS, HALIDES, HALOGEN COMPOUNDS, HYDROXY COMPOUNDS, LITHIUM COMPOUNDS, LITHIUM HALIDES, MATHEMATICAL MODELS, METALS, ORGANIC COMPOUNDS, PARTICLE MODELS, RESONANCE, SPECTRA, SPECTROSCOPY, TRANSITION ELEMENTS
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