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Journal of Applied Polymer Science, Vol.77, No.13, 2795-2804, 2000
Ideality of pressure-sensitive paint. I. Platinum tetra(pentafluorophenyl)porphine in fluoroacrylic polymer
The pressure sensitive paint (PSP) properties of a fluoroacrylic polymer, FIB, with the luminophor platinum tetra(pentafluorophenyl)porphine (PtTFPP) are presented. This paint forms a hard coating that displays Stern-Volmer plots with a high dynamic range (similar to 0.9) [defined as (I-vac -I-atm)/I-vac], good photostability, a response time of less than 1 s and a relatively low temperature dependence (similar to 0.6% per degree). The temperature dependence is low because FIB has a unusually low activation energy for the diffusion of oxygen. Pressure and temperature affect intensity independently making this PSP "ideal." The basecoat affects the functionality of the PSP it underlies, and the optimal basecoat used to date also includes the FIB polymer. The synthesis of the FIB polymer is a copolymerization that occurs in one step with a peroxide initiator. Annealing the painted model above T-g = 70 degrees C procures adhesion and ideality.
Keywords:pressure-sensitive paint;fluoroacrylic polymer FIB;Stern-Volmer plots;luminescence;oxygen quenching;platinum porphyrin