Table 1.

Luminescence properties of Eu(+)-Exn excited at 356 nm in acetone^a.

	Concentration [M]	τ1 [ms]	τ2 [ms]	τ3 [ms]	g CPL
Eu(+)-Ex0	1 × 10−3	0.27 (50%)	0.09 (49%)	0.01 (1%)	−0.44
Eu(+)-Ex498	1 × 10−3	0.37 (3%)	0.12 (97%)	—	+0.013
Eu(+)-Ex0	1 × 10−5	0.31 (100%)	—	—	−1.0

^aEmission decay curves were analysed by multi-exponential curve fittings $\left[I(t)={\sum }^{}{A}_i\exp (-t/{\tau }_i)\right]$. The ratio of each component denotes $100\times A_i{\tau }_i/{\sum }^{}{A}_i{\tau }_i$.