Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy
Few-femtosecond optical transient absorption spectroscopy elucidates the ionization-induced vibrational coherences and ultrafast dynamics of small biomolecules in aqueous solution. Strong-field ionization of such biomolecules by intense, few-cycle (~5 fs) laser pulses yields the radical species and...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/144351 |
| _version_ | 1826126216493531136 |
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| author | Muhammad Shafiq Mohd Yusof Debnath, Tushar Lowe, Bethany Elizabeth Lim, Yong Liang Loh, Zhi-Heng |
| author2 | Asian Spectroscopy Conference 2020 |
| author_facet | Asian Spectroscopy Conference 2020 Muhammad Shafiq Mohd Yusof Debnath, Tushar Lowe, Bethany Elizabeth Lim, Yong Liang Loh, Zhi-Heng |
| author_sort | Muhammad Shafiq Mohd Yusof |
| collection | NTU |
| description | Few-femtosecond optical transient absorption spectroscopy elucidates the ionization-induced vibrational coherences and ultrafast dynamics of small biomolecules in aqueous solution. Strong-field ionization of such biomolecules by intense, few-cycle (~5 fs) laser pulses yields the radical species and the accompanying hydrated electron via multiphoton ionization. The vibrational coherences observed are due to the structural reorganization of the biomolecule in aqueous solution upon photoionization. Previous study on the photodetachment of aqueous phenoxide ion leads to wave packet dynamics of the phenoxyl radical along 12 different vibrational modes.[1] In our study, we studied the vibrational coherences of ionized tryptophan, tyrosine and phenol in aqueous solution that is accompanied by the structural reorganization of the molecule upon photoionization or photodetachment. |
| first_indexed | 2024-10-01T06:49:03Z |
| format | Conference Paper |
| id | ntu-10356/144351 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:49:03Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1443512020-10-29T20:12:00Z Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy Muhammad Shafiq Mohd Yusof Debnath, Tushar Lowe, Bethany Elizabeth Lim, Yong Liang Loh, Zhi-Heng Asian Spectroscopy Conference 2020 Institute of Advanced Studies Science::Chemistry Femtosecond Photoionization Few-femtosecond optical transient absorption spectroscopy elucidates the ionization-induced vibrational coherences and ultrafast dynamics of small biomolecules in aqueous solution. Strong-field ionization of such biomolecules by intense, few-cycle (~5 fs) laser pulses yields the radical species and the accompanying hydrated electron via multiphoton ionization. The vibrational coherences observed are due to the structural reorganization of the biomolecule in aqueous solution upon photoionization. Previous study on the photodetachment of aqueous phenoxide ion leads to wave packet dynamics of the phenoxyl radical along 12 different vibrational modes.[1] In our study, we studied the vibrational coherences of ionized tryptophan, tyrosine and phenol in aqueous solution that is accompanied by the structural reorganization of the molecule upon photoionization or photodetachment. Published version 2020-10-29T12:47:17Z 2020-10-29T12:47:17Z 2020 Conference Paper Muhammad Shafiq Mohd Yusof, Debnath, T., Lowe, B. E., Lim, Y. L., & Loh, Z.-H. (2020).Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy. Proc. Of the 7th Asian Spectroscopy Conference (ASC 2020). doi:10.32655/ASC_8-10_Dec2020.69 https://hdl.handle.net/10356/144351 10.32655/ASC_8-10_Dec2020.69 en © 2020 Nanyang Technological University. application/pdf |
| spellingShingle | Science::Chemistry Femtosecond Photoionization Muhammad Shafiq Mohd Yusof Debnath, Tushar Lowe, Bethany Elizabeth Lim, Yong Liang Loh, Zhi-Heng Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy |
| title | Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy |
| title_full | Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy |
| title_fullStr | Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy |
| title_full_unstemmed | Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy |
| title_short | Ultrafast dynamics of ionized biomolecules in aqueous solution observed via few-femtosecond transient absorption spectroscopy |
| title_sort | ultrafast dynamics of ionized biomolecules in aqueous solution observed via few femtosecond transient absorption spectroscopy |
| topic | Science::Chemistry Femtosecond Photoionization |
| url | https://hdl.handle.net/10356/144351 |
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