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Bachelor of Arts
Hydrosilylation, 10-undecenoic acid, Si(100), Hydrophilic
Hydrosilylation of Si(100) surfaces with various alkenes could expand the surface chemistry library that opens many possibilities to controled biofilm absorption studies. To make a hydrophilic Si surface that could be used as a substrate in biofilm absorption studies, 10-undecenoic acid, an alkene with a carboxylic acid end group, was used in the hydrosilylation reaction on both smooth and rough Si(100). However, this reaction did not make a hydrophilic surface because of the long alkyl chains present on the surface. To make it more hydrophilic, a post-hydrosilylation functionalization reaction was carried on the carboxyl-terminated surface with glycidol. The epoxide ring-opening reaction added another alcohol group to the surface, making it moderately hydrophilic. These functionalized surfaces were chemically and physically stable over a 10- day period under ambient condition. Future work will involve correction of ellipsometry thickness measurement on rough surfaces by adding appropriate models and parameters. Hydrosilylation with other alkenes with even more polar end groups could also be explored to see if it is possible to produce an ideal hydrophilic surface.
2020 Yuhui Du. Access limited to the Smith College community and other researchers while on campus. Smith College community members also may access from off-campus using a Smith College log-in. Other off-campus researchers may request a copy through Interlibrary Loan for personal use.
Du, Yuhui, "Hydrophilic Si(100) with varying typography via post-hydrosilylation functionalization" (2020). Honors Project, Smith College, Northampton, MA.
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