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  Femtosecond x-ray scattering study of ultrafast photoinduced structural dynamics in solvated [Co(terpy)(2)](2+).

Biasin, E., van Driel, T. B., Kjaer, K. S., Dohn, A. O., Christensen, M., Harlang, T., et al. (2016). Femtosecond x-ray scattering study of ultrafast photoinduced structural dynamics in solvated [Co(terpy)(2)](2+). Physical Review Letters, 117(1): 013002. doi:10.1103/PhysRevLett.117.013002.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-0E54-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-924D-2
Genre: Journal Article

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 Creators:
Biasin, E., Author
van Driel, T. B., Author
Kjaer, K. S., Author
Dohn, A. O., Author
Christensen, M., Author
Harlang, T., Author
Chabera, P., Author
Liu, Y., Author
Uhlig, J., Author
Papai, M., Author
Nemeth, Z., Author
Hartsock, R., Author
Liang, W., Author
Zhang, J., Author
Alonso-Mori, R., Author
Chollet, M., Author
Glownia, J. M., Author
Nelson, S., Author
Sokaras, D., Author
Assefa, T. A., Author
Britz, A., AuthorGaller, A., AuthorGawelda, W., AuthorBressler, C., AuthorGaffney, K. J., AuthorLemke, H. T., AuthorMoller, K. B., AuthorNielsen, M. M., AuthorSundstrom, V., AuthorVanko, G., AuthorWarnmark, K., AuthorCanton, S. E.1, Author              Haldrup, K., Author more..
Affiliations:
1Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society, ou_578564              

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 Abstract: We study the structural dynamics of photoexcited [Co(terpy)(2)](2+) in an aqueous solution with ultrafast x-ray diffuse scattering experiments conducted at the Linac Coherent Light Source. Through direct comparisons with density functional theory calculations, our analysis shows that the photoexcitation event leads to elongation of the Co-N bonds, followed by coherent Co-N bond length oscillations arising from the impulsive excitation of a vibrational mode dominated by the symmetrical stretch of all six Co-N bonds. This mode has a period of 0.33 ps and decays on a subpicosecond time scale. We find that the equilibrium bond-elongated structure of the high spin state is established on a single-picosecond time scale and that this state has a lifetime of similar to 7 ps.

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Language(s): eng - English
 Dates: 2016-06-302016-07-01
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.117.013002
 Degree: -

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Title: Physical Review Letters
Source Genre: Journal
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Pages: 6 Volume / Issue: 117 (1) Sequence Number: 013002 Start / End Page: - Identifier: -