Ultrafast investigation of photoinduced charge transfer in aminoanthraquinone pharmaceutical product
文献类型：期刊论文
| 作者 | Zhang, Song; Sun, Simei; Zhou, Miaomiao; Wang, Lian; Zhang, Bing |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2017-02-24 |
| 卷号 | 7页码:1-9 |
| 英文摘要 | We investigated the mechanism of intramolecular charge transfer and the following radiationless dynamics of the excited states of 1-aminoanthraquinone using steady state and time-resolved absorption spectroscopy combined with quantum chemical calculations. Following photoexcitation with 460 nm, conformational relaxation via twisting of the amino group, charge transfer and the intersystem crossing (ISC) processes have been established to be the major relaxation pathways responsible for the ultrafast nonradiative of the excited S-1 state. Intramolecular proton transfer, which could be induced by intramolecular hydrogen bonding is inspected and excluded. Time-dependent density functional theory (TDDFT) calculations reveal the change of the dipole moments of the S-0 and S-1 states along the twisted coordinate of the amino group, indicating the mechanism of twisted intramolecular charge transfer (TICT). The timescale of TICT is measured to be 5 ps due to the conformational relaxation and a barrier on the S-1 potential surface. The ISC from the S-1 state to the triplet manifold is a main deactivation pathway with the decay time of 28 ps. Our results observed here have yield a physically intuitive and complete picture of the photoinduced charge transfer and radiationless dynamics in anthraquinone pharmaceutial products. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | INTRAMOLECULAR PROTON-TRANSFER ; LASER-INDUCED FLUORESCENCE ; ANTIVIRAL AGENT HYPERICIN ; EXCITED-STATE DYNAMICS ; PHOTODYNAMIC THERAPY ; ANTHRAQUINONE DERIVATIVES ; SHPOLSKII MATRIX ; DNA ; SPECTROSCOPY ; 1-AMINOANTHRAQUINONE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000395239100001 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/10045]  |
| 专题 | 武汉物理与数学研究所_原子分子光物理研究部 |
| 作者单位 | Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Song,Sun, Simei,Zhou, Miaomiao,et al. Ultrafast investigation of photoinduced charge transfer in aminoanthraquinone pharmaceutical product[J]. SCIENTIFIC REPORTS,2017,7:1-9. |
| APA | Zhang, Song,Sun, Simei,Zhou, Miaomiao,Wang, Lian,&Zhang, Bing.(2017).Ultrafast investigation of photoinduced charge transfer in aminoanthraquinone pharmaceutical product.SCIENTIFIC REPORTS,7,1-9. |
| MLA | Zhang, Song,et al."Ultrafast investigation of photoinduced charge transfer in aminoanthraquinone pharmaceutical product".SCIENTIFIC REPORTS 7(2017):1-9. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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