Spectroscopic Signature of the Aggregation-Induced Emission Phenomena Caused by Restricted Nonradiative Decay: A Theoretical Proposal
文献类型：期刊论文
| 作者 | Zhang, Tian1; Ma, Huili1; Niu, Yingli2; Li, Wenqiang1; Wang, Dong1; Peng, Qian2; Shuai, Zhigang1; Liang, WanZhen3 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2015-03-05 |
| 卷号 | 119期号:9页码:5040-5047 |
| 英文摘要 | It has been suggested that the exotic aggregation-induced emission (AIE) phenomenon was caused by the restriction on the nonradiative decay through intramolecular vibrational/rotational relaxation. There have been other proposed mechanisms such as J-aggregation or excimer formation, etc. Through computational studies, we propose a direct approach to verify the AIE process, namely, using resonance Raman spectroscopy (RRS) to explore the microscopic mechanism of AIE. Taking examples of AIE-active 1,2-diphenyl-3,4-bis(diphenylmethylene)-1-cyclobutene (HPDMCb) and AIE-inactive 2,3-dicyanopyrazino phenanthrene (DCPP) for comparison, we found that for the AIEgen, after aggregation into cluster, the intensities of low-frequency peaks in RRS are evidently reduced relative to the high-frequency peaks, along with a remarkable blueshift. However, the RRS of non-AIEgen remains almost unaffected upon aggregation. Such distinctive spectroscopic characteristics can be ascribed to the intramolecular vibrational relaxation which is hindered for AIEgen, especially for the low-frequency ring-twisting motions, because the RRS amplitude is proportional to the mode vibrational relaxation energy times frequency lambda(j)omega(j). Thus, RRS is a direct way to clarify the recent dispute on the AIE mechanism. If such predictions are true, it will clearly validate the earlier proposed restriction on the nonradiative decay through an intramolecular vibration/rotation relaxation mechanism. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/28460]  |
| 专题 | 化学研究所_有机固体实验室 |
| 作者单位 | 1.Tsinghua Univ, Dept Chem, Key Lab Organ OptoElect & Mol Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, BNLMS, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China 3.Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Tian,Ma, Huili,Niu, Yingli,et al. Spectroscopic Signature of the Aggregation-Induced Emission Phenomena Caused by Restricted Nonradiative Decay: A Theoretical Proposal[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(9):5040-5047. |
| APA | Zhang, Tian.,Ma, Huili.,Niu, Yingli.,Li, Wenqiang.,Wang, Dong.,...&Liang, WanZhen.(2015).Spectroscopic Signature of the Aggregation-Induced Emission Phenomena Caused by Restricted Nonradiative Decay: A Theoretical Proposal.JOURNAL OF PHYSICAL CHEMISTRY C,119(9),5040-5047. |
| MLA | Zhang, Tian,et al."Spectroscopic Signature of the Aggregation-Induced Emission Phenomena Caused by Restricted Nonradiative Decay: A Theoretical Proposal".JOURNAL OF PHYSICAL CHEMISTRY C 119.9(2015):5040-5047. |
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。