Molecular Conformations and Dynamics on Surfaces of Gold Nanoparticles Probed with Multiple-Mode Multiple-Dimensional Infrared Spectroscopy
文献类型：期刊论文
| 作者 | Bian, Hongtao1; Li, Jiebo1; Chen, Hailong1; Yuan, Kaijun1; Wen, Xiewen1; Li, Yaqin2; Sun, Zhigang2; Zheng, Junrong1 |
| 刊名 | journal of physical chemistry c
 |
| 出版日期 | 2012-04-12 |
| 卷号 | 116期号:14页码:7913-7924 |
| 产权排序 | 2,7 |
| 通讯作者 | 郑俊荣 |
| 英文摘要 | knowledge about molecular conformations and nuclear and electronic motions on surfaces of metal nanomaterials is critical for many applications but extremely difficult to obtain. we demonstrate that valuable information of this sort can be determined using multiple-mode multiple-dimensional vibrational spectroscopy. a model compound, 4-mercaptophenol, on the surface of 3.5 nm gold nanoparticles demonstrates the method. its 3d molecular conformations and vibrational dynamics on the particle surfaces were determined with the method. the experimental results imply that on the particle surfaces, the ligand molecules cannot form energy-optimized hydrogen bonds because of the surface geometry constraint. the conclusion is supported with experiments on the ligand molecules in the crystalline phase and in a dilute solution. our experiments also showed that the effect of the particle surface nonadiabatic electron/vibration coupling does not play a significant role in the vibrational relaxation of high-frequency modes (>1000 cm(-1)) about 3 angstrom away from the surface. simple theoretical calculations support this observation. the method holds promise as a general tool for the studies of molecular structures and dynamics on the surfaces of nanomaterials. the capability of resolving 3d molecular conformations on nanomaterials surfaces is expected to be helpful for understanding specific intermolecular interactions and conformation-selective reactions (e.g., chirality selectivity) on the surfaces of these materials. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | 2d ir spectroscopy ; vibrational echo spectroscopy ; internal-rotation ; aqueous-solutions ; energy transfer ; metal-particle ; excited-states ; hydrogen-bond ; photon-echo ; spectra |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000302591300038 |
| 公开日期 | 2013-10-11 |
| 源URL | [http://159.226.238.44/handle/321008/117882]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Rice Univ, Dept Chem, Houston, TX 77005 USA 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bian, Hongtao,Li, Jiebo,Chen, Hailong,et al. Molecular Conformations and Dynamics on Surfaces of Gold Nanoparticles Probed with Multiple-Mode Multiple-Dimensional Infrared Spectroscopy[J]. journal of physical chemistry c,2012,116(14):7913-7924. |
| APA | Bian, Hongtao.,Li, Jiebo.,Chen, Hailong.,Yuan, Kaijun.,Wen, Xiewen.,...&Zheng, Junrong.(2012).Molecular Conformations and Dynamics on Surfaces of Gold Nanoparticles Probed with Multiple-Mode Multiple-Dimensional Infrared Spectroscopy.journal of physical chemistry c,116(14),7913-7924. |
| MLA | Bian, Hongtao,et al."Molecular Conformations and Dynamics on Surfaces of Gold Nanoparticles Probed with Multiple-Mode Multiple-Dimensional Infrared Spectroscopy".journal of physical chemistry c 116.14(2012):7913-7924. |
入库方式： OAI收割
来源：大连化学物理研究所
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