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Excited State Properties of Fucoxanthin Aggregates
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作者 zuo jialing TAN Liming +4 位作者 XU Yi MA Yingchao DONG Jia WANG Peng ZHANG Jianping 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2019年第4期627-635,共9页
The structure and excited state properties of the H- and J-aggregates of the marine carbonyl carotenoid, fucoxanthin(Fx), were studied by various spectroscopic methods, and compared with those of Fx monomers in polar ... The structure and excited state properties of the H- and J-aggregates of the marine carbonyl carotenoid, fucoxanthin(Fx), were studied by various spectroscopic methods, and compared with those of Fx monomers in polar organic solvents. The fluorescent analysis indicated tliat the higher vibronic states of S2 contribute more to populating the S1 state, from which fluorescent emission mainly originates. Resonance Raman and density functional theory calculations confirmed the ‘card-packed' and chead-to-taiF structures of the H- and J-aggregates of Fx, respectively. An fs time-resolved absorption study proved the coexistence of Si and intramolecular charge transfer relaxation pathways upon excitation to the S2 state for both tlie monomers and aggregates. 展开更多
关键词 FUCOXANTHIN AGGREGATE Resonance Raman fs TIME-RESOLVED absorption Excited state property SINGLET FISSION
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