Table 1 Photophysical data for pseudorotaxanes and their constituents.

From: Ultralong purely organic aqueous phosphorescence supramolecular polymer for targeted tumor cell imaging

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%

–

–

–

  1. The concentrations of BrBP–NH2, CB[7] and CB[8] were 0.5, 0.5 and 0.25 mM, respectively.
  2. aThe intersystem crossing rate constant kisc = ФPhos/τFluo.
  3. bThe radiative decay rate constant of phosphorescence \(k_{{\mathrm{r}}}^{{\mathrm{Phos}}}\) = ФPhos/τPhos.
  4. cThe nonradiative decay rate constant of phosphorescence \(k_{{\mathrm{nr}}}^{{\mathrm{Phos}}}\) = (1−ФPhos)/τPhos.
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