Structure and identity of 4,4 '-thiobisbenzenethiol self-assembled monolayers
文献类型：期刊论文
| 作者 | Wang, Yuling; Gan, Linfeng; Chen, Hongjun; Dong, Shaojun; Wang, Jin |
| 刊名 | Journal of physical chemistry b
 |
| 出版日期 | 2006-10-19 |
| 卷号 | 110期号:41页码:20418-20425 |
| ISSN号 | 1520-6106 |
| DOI | 10.1021/jp062422m |
| 通讯作者 | Dong, shaojun(dongsj@ciac.jl.cn) |
| 英文摘要 | Self-assembled monolayers (sams) of 4,4'-thiobisbenzenethiol (tbbt) can be formed on au surface spontaneously. the structural characteristics and adsorption behavior of tbbt sams on au have been investigated by surface enhanced raman scattering (sers), electrochemical cyclic voltammetry (cv), ac impedance spectroscopy (eis), and atomic force microscopy (afm). it is demonstrated that tbbt adsorbed on au by losing a h atom, forming one au-s bond, and the other mercapto group is free at the surface of the monolayer owing to the presence of the nu(s-h) at 2513 cm(-1) and the delta(c-s-h) at 910 cm(-1) in sers. the enhancement of the vibration of c-s (1064 cm(-1)), the aromatic c-h vibration (3044 cm(-1)), and the absence of the vibration of s-s illustrate tbbt adsorbed on au forming a monolayer with one benzene ring tilted with respect to the au surface. the interpretation of the observed frequencies is aided by ab initio molecular orbital (mo) calculations at the hf/6-31g* level of theory. electrochemical cv and eis indicate tbbt monolayers can passivate the au effectively for its low ratio of pinhole defects (theta = 99.6%). afm studies give details about the surface morphology. the applications of tbbt sams have been extensively investigated by exposure of cu(2+) ion to tbbt sams on au and covalent adsorption of metal nanoparticles. electrochemical, x-ray photoelectron spectroscopic, and sers results indicate that cu(2+) can react with tbbt sams and present on tbbt sams as cu(i). a scanning electron microscopic image of ag nanoparticles on tbbt/au and the raman spectrum of tbbt in smooth macroscopic au/tbbt sams/ag nanoparticle sandwich structure indicate that metal nanoparticles can be adsorbed on tbbt sams effectively through covalent linkage. |
| WOS关键词 | SURFACE-ENHANCED RAMAN ; BENZYL PHENYL SULFIDE ; SILVER SURFACES ; ADSORPTION CHARACTERISTICS ; INDUCED PHOTOREACTION ; GOLD ; SCATTERING ; SPECTROSCOPY ; AU ; FILMS |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| 语种 | 英语 |
| WOS记录号 | WOS:000241192200054 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378422 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Dong, Shaojun |
| 作者单位 | 1.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China 3.SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA |
| 推荐引用方式 GB/T 7714 | Wang, Yuling,Gan, Linfeng,Chen, Hongjun,et al. Structure and identity of 4,4 '-thiobisbenzenethiol self-assembled monolayers[J]. Journal of physical chemistry b,2006,110(41):20418-20425. |
| APA | Wang, Yuling,Gan, Linfeng,Chen, Hongjun,Dong, Shaojun,&Wang, Jin.(2006).Structure and identity of 4,4 '-thiobisbenzenethiol self-assembled monolayers.Journal of physical chemistry b,110(41),20418-20425. |
| MLA | Wang, Yuling,et al."Structure and identity of 4,4 '-thiobisbenzenethiol self-assembled monolayers".Journal of physical chemistry b 110.41(2006):20418-20425. |
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来源：中国科学院大学
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