Absence of Intramolecular Singlet Fission in Pentacene-Perylenediimide Heterodimers: The Role of Charge Transfer State
文献类型：期刊论文
| 作者 | Wang, Long1,2,3; Wu, Yishi1,2,3; Chen, Jianwei1,2,3; Wang, Lanfen1,2,3; Liu, Yanping1,2,3; Yu, Zhenyi1,2,3,5; Yao, Jiannian1,2,3,4; Fu, Hongbing1,2,3,4,5 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2017-11-16 |
| 卷号 | 8期号:22页码:5609-5615 |
| 英文摘要 | A new class of donor-acceptor heterodimers based on two singlet fission (SF)-active chromophores, i.e., pentacene (Pc) and perylenediimide (PDI), was developed to investigate the role of charge transfer (CT) state on the excitonic dynamics. The CT state is efficiently generated upon photoexcitation. However, the resulting CT state decays to different energy states depending on the energy levels of the CT state. It undergoes extremely rapid deactivation to the ground state in polar CH2Cl2, whereas it undergoes transformation to a Pc triplet in nonpolar toluene. The efficient triplet generation in toluene is not due to SF but CT-mediated intersystem crossing. In light of the energy landscape, it is suggested that the deep energy level of the CT state relative to that of the triplet pair state makes the CT state actually serve as a trap state that cannot undergoes an intramolecular singlet fission process. These results provide guidance for the design of SF materials and highlight the requisite for more widely applicable design principles. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38326]  |
| 专题 | 化学研究所_分子动态与稳态结构实验室 |
| 作者单位 | 1.Chinese Acad Sci, BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Inst Chem, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Key Lab Photochem, Inst Chem, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Dept Chem, Beijing 100049, Peoples R China 4.Capital Normal Univ, Beijing Key Lab Opt Mat & Photon Devices, Dept Chem, Beijing 100048, Peoples R China 5.Tianjin Univ, Dept Chem, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Long,Wu, Yishi,Chen, Jianwei,et al. Absence of Intramolecular Singlet Fission in Pentacene-Perylenediimide Heterodimers: The Role of Charge Transfer State[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017,8(22):5609-5615. |
| APA | Wang, Long.,Wu, Yishi.,Chen, Jianwei.,Wang, Lanfen.,Liu, Yanping.,...&Fu, Hongbing.(2017).Absence of Intramolecular Singlet Fission in Pentacene-Perylenediimide Heterodimers: The Role of Charge Transfer State.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,8(22),5609-5615. |
| MLA | Wang, Long,et al."Absence of Intramolecular Singlet Fission in Pentacene-Perylenediimide Heterodimers: The Role of Charge Transfer State".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 8.22(2017):5609-5615. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。