Fullerene C60 immobilized in polymethylmethacrylate film as an optical temperature sensing material

Abstract

A new optical temperature sensor based on the fluorescence intensities of the fullerene C60 immobilized in polymethylmethacrylate (PMMA) film was developed. The fluorescence intensity of the C60 film decreased with increasing the temperature in the range 260-373 K. Arrhenius plot of ln[(I(T)/I(Tref))] versus 1/T for the Ceo film exhibits considerable linearity supported by the correlation factor, r2, estimated to be 0.989 by the least squares method (Tref = 260 K). The E/R value of the C60 film is estimated to be 22.3 K. These results indicate that the Ceo film provides a linear temperature response in the range 260-373 K.