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- W2321218557 endingPage "6072" @default.
- W2321218557 startingPage "6066" @default.
- W2321218557 abstract "Experiments were performed on nitrobenzene liquid at ambient temperature to probe vibrational energy flow from the nitro group to the phenyl group and vice versa. The IR pump, Raman probe method was used. Quantum chemical calculations were used to sort the normal modes of nitrobenzene into three categories: phenyl modes, nitro modes, and global modes. IR wavelengths in the 2500–3500 cm–1 range were found that best produced excitations initially localized on nitro or phenyl. Pulses at 2880 cm–1 excited a nitro stretch combination band. Pulses at 3080 cm–1 excited a phenyl C–H stretch plus some nitro stretch. With nitro excitation there was no detectable energy transfer to phenyl. With phenyl excitation there was no direct transfer to nitro, but there was some transfer to global modes such as phenyl-nitro stretching, so some of the vibrational amplitude on phenyl moved onto nitro. Thus energy transfer from nitro to phenyl was absent, but there was weak energy transfer from phenyl to nitro. The experimental methods described here can be used to study vibrational energy flow from one part of a molecule to another, which could assist in the design of molecules for molecular electronics and phononics. The vibrational isolation of the nitro group when attached to a phenyl moiety suggests that strongly nonthermal reaction pathways may play an important role in impact initiation of energetic materials having peripheral nitro groups." @default.
- W2321218557 created "2016-06-24" @default.
- W2321218557 creator A5017016982 @default.
- W2321218557 creator A5032565369 @default.
- W2321218557 creator A5075047143 @default.
- W2321218557 date "2013-03-07" @default.
- W2321218557 modified "2023-10-11" @default.
- W2321218557 title "Unidirectional Vibrational Energy Flow in Nitrobenzene" @default.
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- W2321218557 doi "https://doi.org/10.1021/jp3127863" @default.
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