【作者】 杨帆； 王天鹤； 艾希成； 王鹏； 张建平；

【Author】 YANG Fan~(1,2) WANG Tian-he~1 AI Xi-cheng~1 WANG Peng~(1*) ZHANG Jian-ping~(1*) 1.Department of Chemistry,Renmin University of China,Beijing 100872,China 2.College of Electronic Science and Engineering,University of Jilin,Changchun 130012,China

【机构】 中国人民大学化学系； 吉林大学电子信息工程系；

【摘要】 <正>岩藻黄质是海洋褐藻门生物体内含量最大的类胡萝卜素,也是地球上年产量最大的类胡萝卜素之一,在藻类光合作用系统中主要担负着捕光和传能的功能。本文主要运用飞秒时间分辨吸收光谱、稳态吸收和荧光光谱、近红外探测发光光谱技术重点研究了该种类胡萝卜紊分子在苯和氯仿更多还原

【Abstract】 Fucoxanthin as the main carotenoid component of brown algae performs the role of light-harvesting mainly.The excit- ed state dynamics of fucoxanthin in benzene and chloroform were studied by femto-second absorption spectroscopy,steady-state absorption and emission,and near infrared emission spectroscopies.The strong coupling of the lowest singlet state （S₁） and the intramolecular charge transfer state (S_CT) gives the mixing S₁/S_CTstate characteristic of the special red-extending and multi vi- brational structure of S_n←S₁ excited state absorption in visible spectral region and the wide emission in near infrared region which is observed for the first time.The excited state dynamics of fucoxanthin was discussed based on the spectroscopic results and by assistance with the theoretical calculation and electrochemical studies.更多还原