File Name : appendix fig. 1.pdf

Caption : visual color appearance of pc:λc (1:4) solutions (~0.04% (w/w) pc) unheated and subjected to thermal treatments at 70 and 90 °c at a ph of 2.5 - 6.0 and stored over a period of 28 days at either 4 or 25 °c.

File Name : appendix fig. 2.pdf

Caption : relative transmittance of pc:λc (1:4) complexes (~0.04% (w/w) pc) prepared at 90 °c and stored for 14 days at 25 °c plotted over ph.