Two-dimensional ultrafast transient absorption spectrograph covering deep-ultraviolet to visible spectral region optimized for biomolecules

Nazari Haghighi Pashaki, Maryam; Mosimann-Schönbächler, Nina; Riede, Aaron; Gazzetto, Michela; Rondi, Ariana; Cannizzo, Andrea (2020). Two-dimensional ultrafast transient absorption spectrograph covering deep-ultraviolet to visible spectral region optimized for biomolecules. JPhys photonics, 3(3), 034014. IOP Publishing 10.1088/2515-7647/ac0805

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We report on the implementation of a multi-kHz single-shot referenced non-coherent two-dimensional UV spectrograph based on conventional pump-probe geometry. It has the capability to cover a broad spectral region in excitation from 270-to-380 nm and in the detection from 270-to-390 nm and 320-to-720 nm. Other setups features are: an unprecedented time resolution of 33 fs (standard deviation); signals are photometrically corrected; a single shot noise of <1 mOD. It has the capability to operate with sample volumes as small as few μl which is an accomplishment in studying biological or biomimetic systems. To show its performances and potentials, we report two preliminary studies on the photophysics of phenanthrenes hosted in a multichromophoric antenna system and of aromatic amino acids in a blue-copper azurin.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics
08 Faculty of Science > Institute of Applied Physics > Lasers

UniBE Contributor:

Nazari Haghighi Pashaki, Maryam; Riede, Aaron Christopher; Gazzetto, Michela and Cannizzo, Andrea

Subjects:

600 Technology > 620 Engineering
500 Science > 530 Physics

ISSN:

2515-7647

Publisher:

IOP Publishing

Funders:

Organisations 279599 not found.; [UNSPECIFIED] Swiss NSF through the NCCR MUST ; Organisations 200021 not found.

Language:

English

Submitter:

Maryam Nazari Haghighi Pashaki

Date Deposited:

05 Oct 2021 17:05

Last Modified:

22 Dec 2021 02:30

Publisher DOI:

10.1088/2515-7647/ac0805

Uncontrolled Keywords:

UV two-dimensional spectroscopy, ultrafast transient absorption spectroscopy, Deep-UV time resolved spectroscopy, phenanthrene multichromophoric system, azurin.

BORIS DOI:

10.48350/153520

URI:

https://boris.unibe.ch/id/eprint/153520

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