Takeuchi and Tahara. 10.1073/pnas.0610141104.

Supporting Information

Files in this Data Supplement:

SI Figure 10
SI Text
SI Figure 11
SI Figure 12
SI Table 2




SI Figure 10

Fig. 10. Steady-state fluorescence spectra of 7-azaindole in hexane (1 ´ 10-2 mol·dm-3) measured at room temperature with four excitation wavelengths. These spectra were normalized by the peak intensity in the UV region after correction for the instrumental sensitivity and reabsorption of the sample.





SI Figure 11

Fig. 11. Femtosecond time-resolved fluorescence signals at ≈440 nm measured with excitation at 313 nm (a) and 270 nm (b).





SI Figure 12

Fig. 12. The absorption spectra of the S1 and S2 states of the 7-azaindole dimer obtained from the excitation wavelength dependence of the femtosecond fluorescence data.





Table 2. Parameters for the spectral decomposition of the dimer absorption as a function of excitation wavelength (λex)

λ

ex, nm

A

1/A2

g

ε

S2, M-1·cm-1

ε

S1, M-1·cm-1

280

0.35

0.66

4700

2400

287

0.30

0.56

4500

3600

293

0.21

0.37

2800

4700

300

0.29

0.54

2600

2300

307

0.09

0.16

280

1500

313

0.013

0.021

19

860

A

1/A2 represents the amplitude ratio of the 0.2-ps (A1) and the 1.1-ps (A2) components obtained by the fitting analysis of the dimer fluorescence at 380 nm. g is the extinction-coefficient ratio of the S2 and S1 states of the 7-azaindole dimer defined by Eq. 1 in the SI Text.