TABLE 3:

Intensity Decays of the Nanoparticles in Absence and Presence of Quenchers

compd/conditionsa	$\overline{\tau }\left(\text{ns}\right)$b	α1	τ1 (ns)	α2	τ2 (ns)	α3	τ3 (ns)	${\chi }_R^2$
blue, no quencher	106.0	0.698	4.91	0.256	57.7	0.046	214.2	2.2
+ 0.2 M acr.	73.7	0.737	1.07	0.190	18.0	0.073	105.9	4.2
+ 0.2 M KI	36.7	0.786	1.11	0.175	11.2	0.039	67.3	4.6
red, no quencher	9800	0.652	232.5	0.337	1073.3	0.011	25850	3.8
+ 0.2 M acr.	8540	0.761	229.3	0.229	1173.0	0.010	23490	1.9
+ 0.2 M acr.	4090	0.738	56.3	0.243	673.7	0.019	8582	3.2

^aThe excitation was 325 nm. The emission filter for the blue particles was an interference filter 500 “ 20 nm. For the red particles we used a long pass filter at 580 nm.

^b$\overline{\tau }={\sum }_{\text{i}}{f}_{\text{i}}{\overline{\tau }}_{\text{i}},f_{\text{i}}={\alpha }_{\text{i}}{\tau }_{\text{i}}/\sum {\alpha }_{\text{i}}{\tau }_{\text{i}}$.