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Pathways of energy transfer in LHCII revealed by room-temperature 2D electronic spectroscopy

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Pathways of energy transfer in LHCII revealed by room-temperature 2D electronic spectroscopy
นักวิจัย : Wells, Kym L. , Lambrev, Petar H. , Zhang, Zhengyang , Garab, Gyözö , Tan, Howe-Siang
คำค้น : DRNTU::Science::Physics
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Wells, K. L., Lambrev, P. H., Zhang, Z., Garab, G., & Tan, H.-S. (2014). Pathways of energy transfer in LHCII revealed by room-temperature 2D electronic spectroscopy. Physical chemistry chemical physics, 16(23), 11640-11646. , http://hdl.handle.net/10220/24530 , http://dx.doi.org/10.1039/C4CP00876F
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical chemistry chemical physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

We present here the first room-temperature 2D electronic spectroscopy study of energy transfer in the plant light-harvesting complex II, LHCII. Two-dimensional electronic spectroscopy has been used to study energy transfer dynamics in LHCII trimers from the chlorophyll b Qy band to the chlorophyll a Qy band. Observing cross-peak regions corresponding to couplings between different excitonic states reveals partially resolved fine structure at the exciton level that cannot be isolated by pump–probe or linear spectroscopy measurements alone. Global analysis of the data has been performed to identify the pathways and time constants of energy transfer. The measured waiting time (Tw) dependent 2D spectra are found to be composed of 2D decay-associated spectra with three timescales (0.3 ps, 2.3 ps and >20 ps). Direct and multistep cascading pathways from the high-energy chlorophyll b states to the lowest-energy chlorophyll a states have been resolved occurring on time scales of hundreds of femtoseconds to picoseconds.

บรรณานุกรม :
Wells, Kym L. , Lambrev, Petar H. , Zhang, Zhengyang , Garab, Gyözö , Tan, Howe-Siang . (2557). Pathways of energy transfer in LHCII revealed by room-temperature 2D electronic spectroscopy.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Wells, Kym L. , Lambrev, Petar H. , Zhang, Zhengyang , Garab, Gyözö , Tan, Howe-Siang . 2557. "Pathways of energy transfer in LHCII revealed by room-temperature 2D electronic spectroscopy".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Wells, Kym L. , Lambrev, Petar H. , Zhang, Zhengyang , Garab, Gyözö , Tan, Howe-Siang . "Pathways of energy transfer in LHCII revealed by room-temperature 2D electronic spectroscopy."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Wells, Kym L. , Lambrev, Petar H. , Zhang, Zhengyang , Garab, Gyözö , Tan, Howe-Siang . Pathways of energy transfer in LHCII revealed by room-temperature 2D electronic spectroscopy. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.