Fluorescence decay fitting parameters of the AChE-nicotine system in the presence of different nicotine concentrations.

System	C T6 (mM)	τ 1 (ns)	τ 2 (ns)	τ 3 (ns)	α 1	α 2	α 3	〈τ〉 (ns)	χ 2
AChE	0	2.295	0.532	5.669	0.428	0.110	0.462	3.659	1.088
AChE-S	0.4	2.423	0.539	5.811	0.452	0.121	0.427	3.641	1.119
	0.8	2.317	0.456	5.797	0.457	0.113	0.429	3.597	1.130
AChE-R	0.4	2.861	0.510	5.721	0.460	0.107	0.433	3.747	1.205
	0.8	2.209	0.471	5.598	0.472	0.112	0.416	3.524	1.179