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Photo-induced pyridine substitution in cis-[Ru(bpy)(2)(py)(2)]Cl-2 : a snapshot by time-resolved X-ray solution scattering
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Salassa, Luca, Borfecchia, Elisa, Ruiu, Tiziana, Garino, Claudio, Gianolio, Diego, Gobetto, Roberto, Sadler, P. J., Cammarata, Marco, Wulff, Michael and Lamberti, Carlo (2010) Photo-induced pyridine substitution in cis-[Ru(bpy)(2)(py)(2)]Cl-2 : a snapshot by time-resolved X-ray solution scattering. Inorganic Chemistry, Vol.49 (No.23). pp. 11240-11248. doi:10.1021/ic102021k
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WRAP_Salassa_456_Inorg Chem 2010 49 11240.pdf - Accepted Version Download (2853Kb) | Preview |
Official URL: http://dx.doi.org/10.1021/ic102021k
Abstract
Determination of transient structures in light-induced processes is a challenging goal for time-resolved techniques. Such techniques are becoming successful in detecting ultrafast structural changes in molecules and do not require the presence of probe-like groups. Here, we demonstrate that TR-WAXS (Time-Resolved Wide Angle X-ray Scattering) can be successfully employed to study the photochemistry of cis-[Ru(bpy)(2)(py)(2)]Cl-2, a mononuclear ruthenium complex of interest in the field of photoactivatable anticancer agents. TR-WAXS is able to detect the release of a pyridine ligand and the coordination of a solvent molecule on a faster timescale than 800 ns of laser excitation. The direct measurement of the photodissociation of pyridine is a major advance in the field of time-resolved techniques allowing detection, for the first time, of the release of a multiatomic ligand formed by low Z atoms. These data demonstrate that TR-WAXS is a powerful technique for studying rapid ligand substitution processes involving photoactive metal complexes of biological interest.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry Q Science > QP Physiology |
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| Divisions: | Faculty of Science > Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | X-rays -- Scattering, Pyridine, Substitution reactions, Time-resolved spectroscopy, Photochemistry, Antineoplastic agents, Ruthenium | ||||
| Journal or Publication Title: | Inorganic Chemistry | ||||
| Publisher: | American Chemical Society | ||||
| ISSN: | 0020-1669 | ||||
| Official Date: | 6 December 2010 | ||||
| Dates: |
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| Date of first compliant deposit: | 3 December 2015 | ||||
| Volume: | Vol.49 | ||||
| Number: | No.23 | ||||
| Number of Pages: | 9 | ||||
| Page Range: | pp. 11240-11248 | ||||
| DOI: | 10.1021/ic102021k | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Seventh Framework Programme (European Commission) (FP7), European Research Council (ERC) | ||||
| Grant number: | 247450 (ERC), 220281 (FP7) |
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