Intramolecular Interactions of Highly pi-Conjugated Perylenediimide Oligomers Probed by Single-Molecule Spectroscopy
文献类型：期刊论文
| 作者 | Cho, Jae-Won1,2; Yoo, Hyejin1,2; Lee, Ji-Eun1,2; Yan, Qifan3; Zhao, Dahui3; Kim, Dongho1,2 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2014-11-06 |
| 卷号 | 5期号:21页码:3895-3901 |
| ISSN号 | 1948-7185 |
| DOI | 10.1021/jz501765x |
| 英文摘要 | Highly pi-conjugated perylenediimide (PDI) oligomers are promising low band gap organic materials for various applications in optoelectronics. In this work, individual fluorescence dynamics of ethynylene- and butadiynylene-bridged dimeric and trimeric PDIs (PEP, PBP, and PEPEP) were monitored and analyzed by single-molecule fluorescence spectroscopy to gain information on the degree of extension of pi-conjugation through the acetylene bridge in PDI multichromophores. The simultaneous measurements of fluorescence intensity, lifetime, and spectrum indicate a sequential decrease in pi-conjugation upon photobleaching of PDI monomer units. Furthermore, Huang-Rhys (HR) factors, S, are obtained to evaluate the degree of electronic coupling in view of pi-conjugation and overall rigidity between the PDI units in PDI oligomers at the single-molecule level. In addition, butadiynylene-bridged dimeric PDI (PBP) reveals conformational heterogeneity due to the long butadiynylene linker. These results suggest a new way to control the photophysical properties of the PDI multichromophoric system by expansion of pi-conjugation and modification with different linker groups. |
| 语种 | 英语 |
| WOS记录号 | WOS:000344579500015 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43475]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Kim, Dongho |
| 作者单位 | 1.Yonsei Univ, Spect Lab Funct Elect Syst, Seoul 120749, South Korea 2.Yonsei Univ, Dept Chem, Seoul 120749, South Korea 3.Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys, Minist Educ,Coll Chem, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cho, Jae-Won,Yoo, Hyejin,Lee, Ji-Eun,et al. Intramolecular Interactions of Highly pi-Conjugated Perylenediimide Oligomers Probed by Single-Molecule Spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2014,5(21):3895-3901. |
| APA | Cho, Jae-Won,Yoo, Hyejin,Lee, Ji-Eun,Yan, Qifan,Zhao, Dahui,&Kim, Dongho.(2014).Intramolecular Interactions of Highly pi-Conjugated Perylenediimide Oligomers Probed by Single-Molecule Spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,5(21),3895-3901. |
| MLA | Cho, Jae-Won,et al."Intramolecular Interactions of Highly pi-Conjugated Perylenediimide Oligomers Probed by Single-Molecule Spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 5.21(2014):3895-3901. |
入库方式： OAI收割
来源：化学研究所
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