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Infrared spectroscopic studies on the molecular orientation of vacuum-deposited thin films of poly(dimethylsilane) and a linear oligosilane
Shimomura, M; Okumoto, H; Kaito, A; Ueno, K; Shen, JS; Ito, K
1998-10-20
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume31Issue:21Pages:7483-7487
AbstractThin films of poly(dimethylsilane) (PDMS) and permethyldodecasilane (DM12) were prepared by the vacuum-deposition method, and the molecular orientation in the films was investigated. Well-oriented films of DM12 were prepared without detectable degradation; however, degradation occurred in the films of PDMS, though well-oriented films were also obtained. Infrared and UV spectra of the vacuum-deposited films were measured with inclined sample alignment. In the spectra of films deposited to substrates at room temperature, a methyl rocking (parallel) band and a sharp UV absorption, which have the same polarity parallel to the chain axis, became stronger when the samples were inclined. Both of the absorptions also showed large dichroism when the samples were inclined. These results suggest that the PDMS and DM12 molecules in the films were oriented perpendicular to the substrate. The infrared spectra of vacuum-deposited PDMS films show Si-H and Si-O bonds formation; i.e., PDMS molecules were degraded during the deposition process. In clear contrast, the infrared spectra of the vacuum-deposited films of DM12 showed no molecular degradation.
Indexed BySCI
Language英语
WOS IDWOS:000076578600047
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/74544
Collection中国科学院化学研究所
Corresponding AuthorShimomura, M
Affiliation1.Natl Inst Mat & Chem Res, Ibaraki 3058565, Japan
2.Acad Sinica, Inst Chem, Beijing 100080, Peoples R China
3.Univ Tokyo, Grad Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan
Recommended Citation
GB/T 7714
Shimomura, M,Okumoto, H,Kaito, A,et al. Infrared spectroscopic studies on the molecular orientation of vacuum-deposited thin films of poly(dimethylsilane) and a linear oligosilane[J]. MACROMOLECULES,1998,31(21):7483-7487.
APA Shimomura, M,Okumoto, H,Kaito, A,Ueno, K,Shen, JS,&Ito, K.(1998).Infrared spectroscopic studies on the molecular orientation of vacuum-deposited thin films of poly(dimethylsilane) and a linear oligosilane.MACROMOLECULES,31(21),7483-7487.
MLA Shimomura, M,et al."Infrared spectroscopic studies on the molecular orientation of vacuum-deposited thin films of poly(dimethylsilane) and a linear oligosilane".MACROMOLECULES 31.21(1998):7483-7487.
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