Synthesis of hyperbranched, hydrophilic fluorinated surface grafts

Langmuir

Volumn 12, Issue 23, 1996, Pages 5519-5521

  Zhou, Yuefen ^a   Bruening, Merlin L ^a   Liu, Yuelong ^a   Crooks, Richard M ^a   Bergbreiter, David E ^a  

^a TEXAS A AND M UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000129096     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la960693q     Document Type: Article

References (18)

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9. (a) Bee, T. G.; McCarthy, T. J. Macromolecules 1992, 25, 2093 and references therein.
10. (b) Rye, R. R.; Knapp, J. A.; Chi, K.-M.; Hampden-Smith, M. J.; Kodas, T. T. J. Appl. Phys. 1992, 72, 5941 and references therein.
11. Zhou, Y.; Bruening, M. L.; Bergbreiter, D. E.; Crooks, R. M.; Wells, M. J. Am. Chem. Soc. 1996, 118, 3773.
12. 4. Films made from the different batches of polymer have similar FTIR-ERS spectra and ellipsometric thickness trends, but absolute thicknesses and absorbances can vary, as discussed in note 12.
13. Lin-Vein, D.; Colthup, N. B.; Fateley, W. G.; Grasselli, J. G. The Handbook of Infrared and Raman Characteristic Frequencies of Organic Molecules; Academic: Boston, 1991; p 40.
14. x carbon, which was assumed to be at 284.6 eV.
15. 4.
16. 10COOH as the constituent of the SAM because it can be polymerized with UV light. (See: Kim, T.; Crooks, R. M.; Tsen, M.; Sun, L. J. Am. Chem. Soc. 1995, 117, 3963.) Hyperbranched polymer films on a polymerized monolayer are more stable in basic solution than those grafted on MUA.
17. x absorbances in the FTIR-ERS spectrum on this film decreases by ≈40% upon grafting of the first pure PAA layer and by ≈80% upon grafting of a second PAA layer. We think that this is due to a change in orientation of the C-F bonds in the initial layer that attenuates the IR absorption according to the surface selection rule. (See: Porter, M. D. Anal. Chem. 1988, 60, 1143A.)
18. Weetall, H. H. In Methods in Enzymology; Mosbach, K., Ed.; Academic Press: New York, 1976; Vol. 44, p 135.