Table 1.

Emission Lifetime(s) of Ru(bpy)32+ in Zeolite Y Under Various Loadings of Ru(II) Complex and TiO2.

% Ru(bpy)32+a,b

% TiO2a

t1 / ns

Ac

t2 / ns

Bc

6.2

0

412

96

54

4

12.4

0

369

98

52

2

17.9

0

283

87

60

12

23.3

0

141

70

40

30

6.2

9.5

137

68

37

32

10.8

9.4

456

95

59

5

17.6

9.8

385

93

60

7

21.9

9.4

278

97

67

3

23.2

17.3

228

81

59

18

22.9

24.2

219

75

57

25

22.9

27.2

205

100

   

22.7

31.2

227

100

   

22.5

31.8

243

100

   

22.4

34.6

266

100

   

22.1

37.1

274

100

   

aPercent by weight. b25.1% loading represents one Ru(bpy)32+ complex in each supercage. cDecays fit to [Aexp(­t/t1) + Bexp(­t/t2)].