Push-Pull Type Oligo(N-annulated perylene)quinodimethanes: Chain Length and Solvent-Dependent Ground States and Physical Properties
文献类型：会议论文
| 作者 | Zeng, Zebing; Lee, Sangsu; Son, Minjung; Fukuda, Kotaro; Mayorga Burrezo, Paula; Zhu, Xiaojian; Qi, Qingbiao; Li, Run-Wei; Lopez Navarrete, Juan T.; Ding, Jun |
| 出版日期 | 2015 |
| 关键词 | NONLINEAR-OPTICAL PROPERTIES EXTENDED P-QUINODIMETHANES OPEN-SHELL 2ND HYPERPOLARIZABILITIES QUINOIDAL OLIGOTHIOPHENES DIRADICAL CHARACTER BIRADICAL CHARACTERS 2-PHOTON ABSORPTION ELECTRON-ACCEPTORS CLOSED-SHELL |
| 卷号 | 137 |
| 期号 | 26 |
| DOI | 10.1021/jacs.5b04156 |
| 英文摘要 | Research on stable open-shell singlet diradicaloids recently became a hot topic because of their unique optical, electronic, and magnetic properties and promising applications in materials science. So far, most reported singlet diradicaloid molecules have a symmetric structure, while asymmetric diradicaloids with an additional contribution of a dipolar zwitterionic form to the ground state were rarely studied. In this Article, a series of new push pull type oligo(N-annulated perylene)quinodimethanes were synthesized. Their chain length and solvent-dependent ground states and physical properties were systematically investigated by various experimental methods such as steady-state and transient absorption, two-photon absorption, X-ray crystallographic analysis, electron spin resonance, superconducting quantum interference device, Raman spectroscopy, and electrochemistry. It was found that with extension of the chain length, the diradical character increases while the contribution of the zwitterionic form to the ground state becomes smaller. Because of the intramolecular charge transfer character, the physical properties of this push pull system showed solvent dependence. In addition, density functional theory calculations on the diradical character and Hirshfeld charge were conducted to understand the chain length and solvent dependence of both symmetric and asymmetric systems. Our studies provided a comprehensive understanding on the fundamental structure and environment property relationships in the new asymmetric diradicaloid systems. |
| 学科主题 | Chemistry |
| ISSN号 | 0002-7863 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/23530]  |
| 专题 | 会议专题 会议专题_会议论文 |
| 推荐引用方式 GB/T 7714 | Zeng, Zebing,Lee, Sangsu,Son, Minjung,et al. Push-Pull Type Oligo(N-annulated perylene)quinodimethanes: Chain Length and Solvent-Dependent Ground States and Physical Properties[C]. 见:. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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。