Glass transition in vapor deposited thin films of toluene

We report on nanocalorimetric measurements of 50 nm thick toluene films at heating rates spanning 600 to 8 × 104 K/s. The films are grown from the vapour at 90 K directly onto the nanocalorimetric cell. The kinetic and thermodynamic stability of as-deposited films is higher than the stability of films cooled from the supercooled liquid at 2000 K/s. We also show that at those heating rates, the calorimetric Tg does not correlate with the relaxation time obtained by dielectric spectroscopy.