Table 1.

Photophysical data for pseudorotaxanes and their constituents.

compound	τ (380 nm)	τ (500 nm)	Ф (500 nm)	$k_{\mathrm{isc}}$a (s−1)	$k_{\mathrm{r}}^{\mathrm{Phos}}$b (s−1)	$k_{\mathrm{nr}}^{\mathrm{Phos}}$c (s−1)
BrBP–NH2	217.21 ps	0	0	–	–	–
CB[7]/BrBP–NH2	300.13 ps	55.31 μs	1.07%	3.57 × 107	1.93 × 102	1.79 × 104
CB[8]/BrBP–NH2	226.56 ps	1.54 ms	2.79%	1.23 × 108	1.81 × 10	6.31 × 102
HA–BrBP	200.89 ps	0	0	–	–	–
CB[7]/HA–BrBP	437.27 ps	77.08 μs	1.25%	2.86 × 107	1.62 × 102	1.28 × 104
CB[7]/HA–BrBP/N2	424.73 ps	124.57 μs	1.49%	–	–	–
CB[8]/HA–BrBP	201.47 ps	4.33 ms	7.58%	3.76 × 108	1.75 × 10	2.13 × 102
CB[8]/HA–BrBP/N2	213.29 ps	5.03 ms	8.77%	–	–	–

The concentrations of BrBP–NH₂, CB[7] and CB[8] were 0.5, 0.5 and 0.25 mM, respectively.

^aThe intersystem crossing rate constant k_isc= Ф_Phos/τ_Fluo.

^bThe radiative decay rate constant of phosphorescence $k_{\mathrm{r}}^{\mathrm{Phos}}$ = Ф_Phos/τ_Phos.

^cThe nonradiative decay rate constant of phosphorescence $k_{\mathrm{nr}}^{\mathrm{Phos}}$ = (1−Ф_Phos)/τ_Phos.