Polyurethanes, fluorinated substrates

Ernsting, M.J., Labow, R.S., and Santerre, J.P. "Human monocyte adhesion onto RGD and PHSRN peptides delivered to the surface of a polycarbonate polyurethane using bioactive fluorinated surface modifiers". ] Biomed. Mater. Res. A 83A(3), 759-769 (2007). Ewbank, P.C., Nuding, G., Suenaga, H., McCullough, R.D., and Shinkai, S. "Amine functionalized polythiophenes Synthesis and formation of chiral, ordered structures on DNA substrates". Tetrahedron Lett 42(2), 155-157 (2001). 

A net adsorption value (corrected for any IRS prism contamination) which could be related to calibration curves for surface concentration was obtained from the ratio of the amide I (C=0 stretching) band at 1640 cm to a standard band for each substrate polymer. The standard bands used were the CH bending vibration at 1400 cm for poly (dimethyl siloxane) and the CF2 scissoring deformation at 1450 cm for fluorinated ethylene/propylene copolymer. Because of the amide I band in polyurethanes, a 4X expanded abscissa was used for the other two polymers, the IX scale was sufflcient. 

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