Wavelength-dependent photoproduct formation of phycocyanobilin in solution - Indications for competing reaction pathways
(2011) In Chemical Physics Letters 515(1-3). p.163-169- Abstract
- Phycocyanobilin (PCB), an open-chain tetrapyrrole, makes up - slightly modified - the chromophore in phytochromes, the importance of which triggered model studies on the photochemistry of PCB in solution. We use pump-wavelength dependent femtosecond transient absorption spectroscopy including the near-IR region for probing to gain new insight into the photoreaction. The data reveal the coexistence of three ground state species: The dominant species PCBA undergoes photoreaction into PCBB and PCBC indicating a branching of the initial reaction path leading to formation of PCBB and PCBC. On this basis the photoreaction involves fast structural rearrangements within the tetrapyrrolic macrocycle, which are followed by slower rate-limiting... (More)
- Phycocyanobilin (PCB), an open-chain tetrapyrrole, makes up - slightly modified - the chromophore in phytochromes, the importance of which triggered model studies on the photochemistry of PCB in solution. We use pump-wavelength dependent femtosecond transient absorption spectroscopy including the near-IR region for probing to gain new insight into the photoreaction. The data reveal the coexistence of three ground state species: The dominant species PCBA undergoes photoreaction into PCBB and PCBC indicating a branching of the initial reaction path leading to formation of PCBB and PCBC. On this basis the photoreaction involves fast structural rearrangements within the tetrapyrrolic macrocycle, which are followed by slower rate-limiting changes in the protonation state of the pyrrolenine/pyrrole rings. (C) 2011 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2254516
- author
- Dietzek, Benjamin ; Fey, Sonja ; Matute, Ricardo A. ; Gonzalez, Leticia ; Schmitt, Michael ; Popp, Juergen ; Yartsev, Arkady LU and Hermann, Gudrun
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Chemical Physics Letters
- volume
- 515
- issue
- 1-3
- pages
- 163 - 169
- publisher
- Elsevier
- external identifiers
-
- wos:000296551300031
- scopus:80053913304
- ISSN
- 0009-2614
- DOI
- 10.1016/j.cplett.2011.08.086
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 5335036b-cad6-40d4-ba21-26c2f83d7a33 (old id 2254516)
- date added to LUP
- 2016-04-01 13:09:54
- date last changed
- 2023-11-12 13:08:16
@article{5335036b-cad6-40d4-ba21-26c2f83d7a33, abstract = {{Phycocyanobilin (PCB), an open-chain tetrapyrrole, makes up - slightly modified - the chromophore in phytochromes, the importance of which triggered model studies on the photochemistry of PCB in solution. We use pump-wavelength dependent femtosecond transient absorption spectroscopy including the near-IR region for probing to gain new insight into the photoreaction. The data reveal the coexistence of three ground state species: The dominant species PCBA undergoes photoreaction into PCBB and PCBC indicating a branching of the initial reaction path leading to formation of PCBB and PCBC. On this basis the photoreaction involves fast structural rearrangements within the tetrapyrrolic macrocycle, which are followed by slower rate-limiting changes in the protonation state of the pyrrolenine/pyrrole rings. (C) 2011 Elsevier B.V. All rights reserved.}}, author = {{Dietzek, Benjamin and Fey, Sonja and Matute, Ricardo A. and Gonzalez, Leticia and Schmitt, Michael and Popp, Juergen and Yartsev, Arkady and Hermann, Gudrun}}, issn = {{0009-2614}}, language = {{eng}}, number = {{1-3}}, pages = {{163--169}}, publisher = {{Elsevier}}, series = {{Chemical Physics Letters}}, title = {{Wavelength-dependent photoproduct formation of phycocyanobilin in solution - Indications for competing reaction pathways}}, url = {{http://dx.doi.org/10.1016/j.cplett.2011.08.086}}, doi = {{10.1016/j.cplett.2011.08.086}}, volume = {{515}}, year = {{2011}}, }