Ideality of pressure-sensitive paint. I. Platinum tetra(pentafluorophenyl)porphine in fluoroacrylic polymer

TLDR

The basecoat influences PSP performance, and the current optimal basecoat incorporates the FIB polymer. The study presents the PSP properties of a fluoroacrylic polymer, FIB, with platinum tetra(pentafluorophenyl)porphine. The FIB polymer is synthesized via one‑step copolymerization with a peroxide initiator, and its unusually low activation energy for oxygen diffusion results in a low temperature dependence. The paint forms a hard coating with a high dynamic range (~0.9), good photostability, a sub‑second response, and low temperature dependence (~0.6% per °C); pressure and temperature affect intensity independently, and annealing above Tg = 70 °C ensures adhesion and ideality. © 2000 John Wiley & Sons, Inc.; J Appl Polym Sci 77: 2795–2804.

Abstract

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 (∼ 0.9) [defined as (Ivac − Iatm)/Ivac], good photostability, a response time of less than 1 s and a relatively low temperature dependence (∼ 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 Tg = 70°C procures adhesion and ideality. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 2795–2804, 2000