Effect of the chemical nature and length of spacer arms on the covalent grafting of fluorinated molecular probes at the surface of poly(ethylene terephthalate) membrane

摘要

A series of fluorinated molecular probes were synthesized that are characterized by spacer arms of various lengths and polarities. Previous molecules (1, 2a, 2b, 2c, 3a, 3b) were covalently fixed on the surface of poly(ethlylene terephthalate) (PET) membranes via activated hydroxyl chain endings. X-ray photoelectron microscopic analysis of the grafted samples allowed us to quantify the PET surface reactivity; the results were within 40-50 pmol/cm(2) of fixed probes, independent of the length and hydrophilicity of the spacer arms. (C) 2002 Wiley Periodicals, Inc. [References: 45]