Excited-State Deactivation of Branched Phthalocyanine Compounds
文献类型：期刊论文
| 作者 | Zhu, Huaning1,2; Li, Yang1,2; Chen, Jun1,2,3; Zhou, Meng1,2; Niu, Yingli1,2; Zhang, Xinxing1,2; Guo, Qianjin1,2; Wang, Shuangqing1,2; Yang, Guoqiang1,2; Xia, Andong1,2 |
| 刊名 | CHEMPHYSCHEM
 |
| 出版日期 | 2015-12-21 |
| 卷号 | 16期号:18页码:3893-3901 |
| 关键词 | ab initio calculations energy transfer time-resolved spectroscopy molecular dynamics phthalocyanines |
| 英文摘要 | The excited-state relaxation dynamics and chromophore interactions in two phthalocyanine compounds (bis- and trisphthalocyanines) are studied by using steady-state and femtosecond transient absorption spectral measurements, where the excited-state energy-transfer mechanism is explored. By exciting phthalocyanine compounds to their second electronically excited states and probing the subsequent relaxation dynamics, a multitude of deactivation pathways are identified. The transient absorption spectra show the relaxation pathway from the exciton state to excimer state and then back to the ground state in bisphthalocyanine (bis-Pc). In trisphthalocyanine (tris-Pc), the monomeric and dimeric subunits are excited and the excitation energy transfers from the monomeric vibrationally hot S1 state to the exciton state of a pre-associated dimer, with subsequent relaxation to the ground state through the excimer state. The theoretical calculations and steady-state spectra also show a face-to-face conformation in bis-Pc, whereas in tris-Pc, two of the three phthalocyanine branches form a pre-associated face-to-face dimeric conformation with the third one acting as a monomeric unit; this is consistent with the results of the transient absorption experiments from the perspective of molecular structure. The detailed structure-property relationships in phthalocyanine compounds is useful for exploring the function of molecular aggregates in energy migration of natural photosynthesis systems. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/29581]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Key Lab Photochem, Beijing 100190, Peoples R China 3.Jiangxi Univ Sci & Technol, Sch Mat Sci & Engn, Ganzhou 341000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Huaning,Li, Yang,Chen, Jun,et al. Excited-State Deactivation of Branched Phthalocyanine Compounds[J]. CHEMPHYSCHEM,2015,16(18):3893-3901. |
| APA | Zhu, Huaning.,Li, Yang.,Chen, Jun.,Zhou, Meng.,Niu, Yingli.,...&Xia, Andong.(2015).Excited-State Deactivation of Branched Phthalocyanine Compounds.CHEMPHYSCHEM,16(18),3893-3901. |
| MLA | Zhu, Huaning,et al."Excited-State Deactivation of Branched Phthalocyanine Compounds".CHEMPHYSCHEM 16.18(2015):3893-3901. |
入库方式： OAI收割
来源：化学研究所
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