FCS Experimental Method.
Dilutions of fluorescein-labelled PEG in water were deposited onto spin-cast polymer films and measured with a ConfoCor2 FCS module fitted to a Zeiss AxioVert microscope. Temperature was controlled using a Linkam heating stage fitted via a custom-made mount.

FCS Data
Columns A and B are the lag time (typically denoted tau in publications). Columns C onwards are the autocorrelation values and each column is a measurement at a specific temperature (value in row 2).
"Heating" and "cooling" refers to measurements taking with increasing temperature or decreasing temperature. Columns C onwards are presented in the order in which measurements were taken, i.e. column C is the starting temperature.



Contact Angle Experimental Method
A Biolin Attension-Theta was used to measure contact angles. Thin polymer films were made through spin casting and were then mounted onto a Linkam heating stage. This was in turn mounted to the Attension-Theta stage using a custom-made mount, and droplets of water were deposited onto the surface once a stable temperature was achieved.

Contact Angle Data
Columns A and G are the temperature as measured at the Linkam heating stage. Columns B and H use a value of Tg = 32 degrees (glass transition determined via ellipsometry) for normalisation. The contact angles in C and I are the average of 200 frames and the error (columns D and J) is the standard deviation over the same 200 frames.