Table 1.

Effect of sensitizer loading on ¹O₂ generation.

Treatment	RB adsorbed (mg/cm2)	R1O2 (x 10 −7 M s−1)
1000-fold diluted stock	0.082	⁎ND
50-fold diluted stock	0.26	0.232
10-fold diluted	2	0.62
Undiluted stock (10 g RB in 150 g of gel)	9.4	3.32

^⁎ND: Not detectable as there was no observable difference from blank.