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Applied Sciences
Volume 10
Issue 11
10.3390/app10114045
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Article

Investigations of the Energy Transfer in the Phycobilisome Antenna of Arthrospira platensis Using Femtosecond Spectroscopy

by
Alexandra Fălămaș
1,*,
Sebastian A. Porav
1,2 and
Valer Tosa
1
1
National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
2
Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babeş-Bolyai University, 5–7 Clinicilor Street, 400006 Cluj-Napoca, Romania
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(11), 4045; https://doi.org/10.3390/app10114045
Submission received: 12 May 2020 / Revised: 1 June 2020 / Accepted: 9 June 2020 / Published: 11 June 2020
(This article belongs to the Special Issue Ultrashort Pulses: Generation and Applications)
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Abstract

Understanding the energy transfer in phycobilisomes extracted from cyanobacteria can be used for building biomimetic hybrid systems for optimized solar energy collection and photocurrent amplification. In this paper, we applied time-resolved absorption and fluorescence spectroscopy to investigate the ultrafast dynamics in a hemidiscoidal phycobilisome obtained from Arthrospira platensis. We obtained the steady-state and time-resolved optical properties and identified the possible pathways of the excitation energy transfer in the phycobilisome and its components, phycocyanin and allophycocyanin. The transient absorption data were studied using global analysis and revealed the existence of ultrafast kinetics down to 850 fs in the phycobilisome. The fluorescence lifetimes in the nanosecond time-scale assigned to the final emitters in each sample were obtained from the time-correlated single photon counting fluorescence experiments.
Keywords: phycobilisome; cyanobacteria; energy transfer; time-resolved spectroscopy phycobilisome; cyanobacteria; energy transfer; time-resolved spectroscopy

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MDPI and ACS Style

Fălămaș, A.; Porav, S.A.; Tosa, V. Investigations of the Energy Transfer in the Phycobilisome Antenna of Arthrospira platensis Using Femtosecond Spectroscopy. Appl. Sci. 2020, 10, 4045. https://doi.org/10.3390/app10114045

AMA Style

Fălămaș A, Porav SA, Tosa V. Investigations of the Energy Transfer in the Phycobilisome Antenna of Arthrospira platensis Using Femtosecond Spectroscopy. Applied Sciences. 2020; 10(11):4045. https://doi.org/10.3390/app10114045

Chicago/Turabian Style

Fălămaș, Alexandra, Sebastian A. Porav, and Valer Tosa. 2020. "Investigations of the Energy Transfer in the Phycobilisome Antenna of Arthrospira platensis Using Femtosecond Spectroscopy" Applied Sciences 10, no. 11: 4045. https://doi.org/10.3390/app10114045

APA Style

Fălămaș, A., Porav, S. A., & Tosa, V. (2020). Investigations of the Energy Transfer in the Phycobilisome Antenna of Arthrospira platensis Using Femtosecond Spectroscopy. Applied Sciences, 10(11), 4045. https://doi.org/10.3390/app10114045

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