Table 5. Fluorescence lifetimes (τ) and relative representations for two different fluorescence probes and hyaluronan of different molecular weights (values in italics correspond to scattered light).

	blank		freeze-dried
	τ (ns)	representation	τ (ns)	representation
prodan
Mw = 106 kDa	0.64	51%	0.01	77%
	1.92	49%	0.95	12%
			2.79	11%
Mw = 420 kDa	0.60	55%	0.02	74%
	2.00	45%	1.04	17%
			3.54	9%
Mw = 1.46 MDa	0.62	50%	0.02	75%
	1.88	50%	0.87	14%
			2.61	11%
perylene
Mw = 106 kDa			0.05	68%
	no data		3.91	24%
			7.29	8%
Mw = 420 kDa			0.05	62%
	no data		3.44	27%
			6.52	11%
Mw = 1.46 MDa			0.05	68%
	no data		3.55	20%
			6.99	12%