Table 4 Photophysical data of complexes 1–7 a.

From: Near-Infrared Fluorescence of Silicon Phthalocyanine Carboxylate Esters

SiPc

λ em/nm

ΦPL/%b

τ/ns

τ rad/nsc

k r/× 106s−1d

k nr/× 106 s−1e

1

700

42

7.3

17.4

57.5

79.4

2

697

48

6.7

13.9

71.6

77.6

3

688

52

7.2

13.8

72.2

66.7

4

692

46

6.9

15.0

66.7

78.3

5

692

41

7.3

17.8

56.2

80.8

6

698

40

7.2

18.0

55.5

83.3

7

693

43

7.2

16.7

59.7

79.2

  1. aIn dichloromethane solution at room temperature. bDetermined using relative method using R2 as the reference. cCalculated from τ rad = τ × Φ−1. dCalculated from k r = ΦPL/τε. eCalculated from k nr = (k r/ΦPL) − k r.
Back to article page