Document Detail


Spectral parameters and Hamaker constants of silicon hydride compounds and organic solvents.
MedLine Citation:
PMID:  19781714     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Cyclopentasilane (CPS) and polydihydrosilane, which consist of hydrogen and silicon only, are unique materials that can be used to produce intrinsic silicon film in a liquid process, such as spin coating or an ink-jet method. Wettability and solubility of general organic solvents including the above can be estimated by Hamaker constants, which are calculated according to the Lifshitz theory. In order to calculate a Hamaker constant by the simple spectral method (SSM), it is necessary to obtain absorption frequency and function of oscillator strength in the ultraviolet region. In this report, these physical quantities were obtained by means of an optical method. As a result of examination of the relation between molecular structures and ultraviolet absorption frequencies, which were obtained from various liquid materials, it was concluded that ultraviolet absorption frequencies became smaller as electrons were delocalized. In particular, the absorption frequencies were found to be very small for CPS and polydihydrosilane due to sigma-conjugate of their electrons. The Hamaker constants of CPS and polydihydrosilane were successfully calculated based on the obtained absorption frequency and function of oscillator strength.
Authors:
Takashi Masuda; Yasuo Matsuki; Tatsuya Shimoda
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Publication Detail:
Type:  Journal Article     Date:  2009-08-21
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  340     ISSN:  1095-7103     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-10-19     Completed Date:  2010-01-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  298-305     Citation Subset:  -    
Affiliation:
Japan Science and Technology Agency, ERATO, Shimoda Nano-Liquid Process Project, 2-5-3 Asahidai, Nomi, Ishikawa 923-1211, Japan. masuda@ishikawa-sp.com
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