Table 1.

Multiexponential Intensity decay of BAQ and BAQBA

pH	τ1 (ns)	α1	τ2 (ns)	α2	τ3 (ns)	α3	χ2
BAQ
3a	2.47	0.98	6.99	0.02	–	–	1.15
4a	2.33	0.89	3.66	0.11	–	–	1.06
5b	2.16	0.63	2.53	0.37	–	–	1.03
5.5b	2.15	0.69	3.01	0.31	–	–	1.02
6b	2.22	0.81	3.13	0.19	–	–	1.10
6.5b	2.24	0.85	3.44	0.15	–	–	1.08
7b	2.17	0.81	3.30	0.19	–	–	1.03
7.5b	2.05	0.76	2.99	0.24	–	–	1.03
8b	2.13	0.79	3.12	0.21	–	–	1.07
8.5b	1.99	0.83	3.16	0.17	–	–	1.14
9b	1.71	0.84	2.83	0.16	–	–	1.03
11c	1.79	0.66	2.62	0.34	–	–	1.16
BAQBA
3a	2.06	0.68	3.40	0.32	–	–	1.06
4a	2.03	0.69	3.44	0.31	–	–	1.02
5b	1.97	0.69	3.52	0.31	–	–	1.18
5.5b	1.24	0.28	2.79	0.72	–	–	1.52d
6b	1.79	0.51	0.18	0.16	3.38	0.33	0.99
7b	1.73	0.49	0.22	0.19	3.41	0.32	1.03
7.5b	1.93	0.61	0.29	0.22	4.25	0.17	1.10
8.5b	1.94	0.61	0.29	0.23	4.63	0.16	1.15
9b	1.76	0.52	0.27	0.25	3.59	0.23	1.22
10c	1.89	0.51	0.27	0.25	3.77	0.24	1.03
11c	1.97	0.59	0.27	0.25	5.22	0.16	1.13

^aAcetate buffer.

^bPhosphate buffer.

^cCarbonate buffer.

^dA triple exponential function could not describe this data set well.