New Insight into the Photoprotection Mechanism of Plant Sunscreens: Adiabatic Relaxation Competing with Nonadiabatic Relaxation in the cis -> trans Photoisomerization of Methyl Sinapate
文献类型：期刊论文
| 作者 | Zhao, Xi1,2; Luo, Jian2; Yang, Songqiu2; Han, Keli2,3 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 10期号:15页码:4197-4202 |
| ISSN号 | 1948-7185 |
| DOI | 10.1021/acs.jpclett.9b01651 |
| 通讯作者 | Han, Keli(klhan@dicp.ac.cn) |
| 英文摘要 | A great deal of thermally instable cis form photoisomerization products will be formed from the thermally stable trans form of the plant sunscreens sinapate esters upon ultraviolet radiation. To reveal the photoisomerization mechanism of the cis-isomer, we explore the photodynamics of a model plant sunscreen methyl sinapate (MS) in the cis form in organic solution. The high photoisomerization quantum yield of the cis-isomer results in the relatively higher photostability of trans-MS. By utilizing femtosecond transient absorption spectroscopy and quantum chemical calculation, we propose that an adiabatic relaxation competes with nonadiabatic relaxation for the excited-state cis form of methyl sinapate. These results suggest that the photoprotection mechanism of the cis form of sinapate esters is significantly different from that of the trans form of sinapate esters and plays an important role in the overall photoprotection effect. |
| WOS关键词 | EXCITED-STATE DYNAMICS ; HULA-TWIST ; METHOXY METHYLCINNAMATE ; DENSITY FUNCTIONALS ; ISOMERIZATION ; ACID |
| 资助项目 | National Natural Science Foundation of China[21833009] ; National Natural Science Foundation of China[21533010] ; National Natural Science Foundation of China[21703244] ; National Natural Science Foundation of China[21403226] ; National Key Research and Development Program of China[2016YFE0120900] ; National Key Research and Development Program of China[2017YFA0204800] ; DICP[ZZBS201703] ; DICP[DMTO201601] ; Science Challenging Program[JCKY2016212A501] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000487181400008 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; DICP ; DICP ; Science Challenging Program ; Science Challenging Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; DICP ; DICP ; Science Challenging Program ; Science Challenging Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; DICP ; DICP ; Science Challenging Program ; Science Challenging Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; DICP ; DICP ; Science Challenging Program ; Science Challenging Program |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/172677]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Han, Keli |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 10049, Peoples R China 2.Chinese Acad Sci, DICP, State Key Lab Mol React Dynam, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China 3.Shandong Univ, Inst Mol Sci & Engn, Qingdao 266237, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Xi,Luo, Jian,Yang, Songqiu,et al. New Insight into the Photoprotection Mechanism of Plant Sunscreens: Adiabatic Relaxation Competing with Nonadiabatic Relaxation in the cis -> trans Photoisomerization of Methyl Sinapate[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2019,10(15):4197-4202. |
| APA | Zhao, Xi,Luo, Jian,Yang, Songqiu,&Han, Keli.(2019).New Insight into the Photoprotection Mechanism of Plant Sunscreens: Adiabatic Relaxation Competing with Nonadiabatic Relaxation in the cis -> trans Photoisomerization of Methyl Sinapate.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,10(15),4197-4202. |
| MLA | Zhao, Xi,et al."New Insight into the Photoprotection Mechanism of Plant Sunscreens: Adiabatic Relaxation Competing with Nonadiabatic Relaxation in the cis -> trans Photoisomerization of Methyl Sinapate".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 10.15(2019):4197-4202. |
入库方式： OAI收割
来源：大连化学物理研究所
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