Carotenoid Single-Molecular Singlet Fission and thePhotoprotection of a Bacteriochlorophyllb-Type Core Light-Harvesting Antenna

doi:10.1021/acs.jpclett.2c00519

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	Carotenoid Single-Molecular Singlet Fission and thePhotoprotection of a Bacteriochlorophyllb-Type Core Light-Harvesting Antenna
	Yu, Long-Jiang ; Zhang, Jian-Ping ; Zhang, Yan ; Qi, Chen-Hui ; Yamano, Nami ; Wang, Peng 3; Wang-Otomo, Zheng-Yu
刊名	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
	2022
卷号	13 期号:16 页码:3534-3541
ISSN号	1948-7185
DOI	10.1021/acs.jpclett.2c00519
文献子类	Article
英文摘要	Carotenoid (Car) in photosynthesis plays the major roles of accessarylight harvesting and photoprotection, and the underlying structure-functionrelationship attracts continuing research interests. We have attempted to explorethe dynamics of Car triplet excitation (3Car) in the bacteriochlorophyllb(BChlb)-type light harvesting reaction center complex (LH1-RC) of photosynthetic bacteriumHalorhodospira halochloris. We show that the LH1 antenna binds a single Car that wasidentified as a lycopene derivative. Although the Car is hardly visible in the LH1-RCstationary absorption, it shows up conspicuously in the triplet excitation profile withdistinct vibronic features. This and the ultrafast formation of3Caron directphotoexcitation of Car unequivocally manifest the unimolecular singletfission reactionof the Car. Moreover, the Car with even one molecule per complex is found to berather effective in quenching3BChlb. The implications of different3Carformationmechanisms are discussed, and the self-photoprotection role of BChlbare proposedfor this extremophilic species.
学科主题	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
出版地	WASHINGTON
WOS关键词	ENERGY-TRANSFER ; ALL-TRANS ; STATE ; COMPLEXES ; MECHANISM ; BACTERIUM ; LYCOPENE ; PHOTOPROTECTION ; EXCITATIONS ; ABSORPTION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000795879200002
资助机构	Natural Science Foundation of China (NSFC) [22173115, 32070264, 22003075] ; National Key R&D Program of China [2019YFA0904600] ; CAS Key Research program for Frontier Science [QYZDY-SSW-SMC003]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28600]
专题	中科院光生物学重点实验室
作者单位	1.[Yu, Long-Jiang 2.Renmin Univ China, Dept Chem, Key Lab Adv Light Convers Mat & Biophoton, Beijing 1000872, Peoples R China 3.Yamano, Nami 4.[Zhang, Jian-Ping 5.Ibaraki Univ, Fac Sci, Mito, Ibaraki 3108512, Japan 6.Zhang, Yan 7.Chinese Acad Sci, Inst Bot, Key Lab Photobiol, Photosynthesis Res Ctr, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yu, Long-Jiang,Zhang, Jian-Ping,Zhang, Yan,et al. Carotenoid Single-Molecular Singlet Fission and thePhotoprotection of a Bacteriochlorophyllb-Type Core Light-Harvesting Antenna[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2022,13(16):3534-3541.
APA	Yu, Long-Jiang.,Zhang, Jian-Ping.,Zhang, Yan.,Qi, Chen-Hui.,Yamano, Nami.,...&Wang-Otomo, Zheng-Yu.(2022).Carotenoid Single-Molecular Singlet Fission and thePhotoprotection of a Bacteriochlorophyllb-Type Core Light-Harvesting Antenna.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,13(16),3534-3541.
MLA	Yu, Long-Jiang,et al."Carotenoid Single-Molecular Singlet Fission and thePhotoprotection of a Bacteriochlorophyllb-Type Core Light-Harvesting Antenna".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 13.16(2022):3534-3541.