Resonant infrared pulsed-laser deposition of a sorbent chemoselective polymer

Fluoropolyol, a sorbent chemoselective polymer, has been deposited as a thi n film by resonant infrared pulsed laser deposition using a free electron l aser operating at 2.90 mum, a wavelength resonant with the hydroxl stretch. A comparison of the infrared absorbance of the deposited film and starting material shows no evidence of chemical decomposition in the film. Gel perm eation chromatography shows that the film and starting material have nearly the same molar mass. The results are particularly applicable to the fabric ation of chemical and biological sensors. The concept of resonant pulsed la ser deposition using intrinsic vibrational modes may have wide applicabilit y for organic materials. (C) 2001 American Institute of Physics.