Table 1 The calculated intensity ratio of 5D0 → 7F2 to 5D0 → 7F1 transitions (η), rate constants of radiative (kr) and nonradiative (knr) rate constant, quantum efficiency (φ), lifetime (τ) of europium complexes in H2O and in D2O, and the average number of coordinated water molecules (q).

From: An enzyme/pH dual-responsive supramolecular fluorescent vesicle with tunable size fabricated by europium complex and polypseudorotaxanes

Sample

η

kr/ms–1

knr/ms–1

φ/%

τ/ms

q

H2O

D2O

Eu[III]

2.56

0.280

2.998

8.5

0.304 a

3.172 a

3.12 a

Eu[III]@CMCD

3.81

0.344

0.477

47.8

0.311 (38%), 1.440 (62%)

2.672

0.43

Eu[III]@PPRs

H/G = 20

4.25

0.360

0.332

52.0

1.438

2.657

0.08

H/G = 16

4.31

0.363

0.327

52.6

1.465

2.587

0.06

H/G = 12

4.43

0.371

0.298

55.5

1.507

2.670

0.05

H/G = 8

4.48

0.375

0.293

56.1

1.512

2.613

0.03

  1. aData from ref.43.
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