Organometallic rotaxane dendrimers with fourth-generation mechanically interlocked branches
文献类型：期刊论文
| 作者 | Wang, Wei1; Chen, Li-Jun1; Wang, Xu-Qing1; Sun, Bin1,2; Li, Xiaopeng2; Zhang, Yanyan3; Shi, Jiameng3; Yu, Yihua3; Zhang, Li4; Liu, Minghua4 |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
 |
| 出版日期 | 2015-05-05 |
| 卷号 | 112期号:18页码:5597-5601 |
| 关键词 | rotaxane dendrimer controllable divergent approach platinum acetylide surface modification dynamic supramolecular systems |
| 英文摘要 | Mechanically interlocked molecules, such as catenanes, rotaxanes, and knots, have applications in information storage, switching devices, and chemical catalysis. Rotaxanes are dumbbell-shaped molecules that are threaded through a large ring, and the relative motion of the two components along each other can respond to external stimuli. Multiple rotaxane units can amplify responsiveness, and repetitively branched molecules-dendrimers-can serve as vehicles for assembly of many rotaxanes on single, monodisperse compounds. Here, we report the synthesis of higher-generation rotaxane dendrimers by a divergent approach. Linkages were introduced as spacer elements to reduce crowding and to facilitate rotaxane motion, even at the congested periphery of the compounds up to the fourth generation. The structures were characterized by 1D multinuclear (H-1, C-13, and P-31) and 2D NMR spectroscopy, MALDI-TOF-MS, gel permeation chromatography (GPO, and microscopy-based methods including atomic force microscopy (AFM) and transmission electron microscopy (TEM). AFM and TEM studies of rotaxane dendrimers vs. model dendrimers show that the rotaxane units enhance the rigidity and reduce the tendency of these assemblies to collapse by self-folding. Surface functionalization of the dendrimers with ferrocenes as termini produced electrochemically active assemblies. The preparation of dendrimers with a well-defined topological structure, enhanced rigidity, and diverse functional groups opens previously unidentified avenues for the application of these materials in molecular electronics and materials science. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/28047]  |
| 专题 | 化学研究所_胶体、界面与化学热力学实验室 |
| 作者单位 | 1.E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China 2.Texas State Univ, Dept Chem & Biochem, San Marcos, TX 78666 USA 3.E China Normal Univ, Dept Phys, Shanghai Key Lab Magnet Resonance, Shanghai 200062, Peoples R China 4.Chinese Acad Sci, Inst Chem, Key Lab Colloid Interface & Chem Thermodynam, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wei,Chen, Li-Jun,Wang, Xu-Qing,et al. Organometallic rotaxane dendrimers with fourth-generation mechanically interlocked branches[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2015,112(18):5597-5601. |
| APA | Wang, Wei.,Chen, Li-Jun.,Wang, Xu-Qing.,Sun, Bin.,Li, Xiaopeng.,...&Yang, Hai-Bo.(2015).Organometallic rotaxane dendrimers with fourth-generation mechanically interlocked branches.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,112(18),5597-5601. |
| MLA | Wang, Wei,et al."Organometallic rotaxane dendrimers with fourth-generation mechanically interlocked branches".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 112.18(2015):5597-5601. |
入库方式： OAI收割
来源：化学研究所
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