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Two-dimensional electronic spectroscopy of bacteriochlorophyll a with synchronized dual mode-locked lasers

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Title
Two-dimensional electronic spectroscopy of bacteriochlorophyll a with synchronized dual mode-locked lasers
Author(s)
Kim, JunWoo; Jeon, Jonggu; Yoon, Tai Hyun; Cho, Minhaeng
Publication Date
2020-12
Journal
NATURE COMMUNICATIONS, v.11, no.1, pp.1 - 10
Publisher
NATURE RESEARCH
Abstract
How atoms and electrons in a molecule move during a chemical reaction and how rapidly energy is transferred to or from the surroundings can be studied with flashes of laser light. However, despite prolonged efforts to develop various coherent spectroscopic techniques, the lack of an all-encompassing method capable of both femtosecond time resolution and nanosecond relaxation measurement has hampered various applications of studying correlated electron dynamics and vibrational coherences in functional materials and biological systems. Here, we demonstrate that two broadband (>300nm) synchronized mode-locked lasers enable two-dimensional electronic spectroscopy (2DES) study of chromophores such as bacteriochlorophyll a in condensed phases to measure both high-resolution coherent vibrational spectrum and nanosecond electronic relaxation. We thus anticipate that the dual mode-locked laser-based 2DES developed and demonstrated here would be of use for unveiling the correlation between the quantum coherence and exciton dynamics in light-harvesting protein complexes and semiconducting materials.
URI
https://pr.ibs.re.kr/handle/8788114/9015
DOI
10.1038/s41467-020-19912-5
ISSN
2041-1723
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > 1. Journal Papers (저널논문)
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