Table 1 Experimental vertical detachment energies (VDEs) of p-HBDI− in aqueous solution. Measured centres of Gaussians fitted to the photoelectron spectra in Fig. 2a, eKE, associated values of VDE = nhν − eKE, where n is the number of photons required to detach the electron from the assigned singlet state, assignments and corresponding S0-Di VDEs (see Discussion). The error bars associated with the measured eKEs reflect experimental uncertainties (Supplementary Methods).

From: Liquid-microjet photoelectron spectroscopy of the green fluorescent protein chromophore

Wavelength/ nm (eV)

eKE/eV

n

VDE/eV

Assignment

S0-Di VDE/eV

440 (2.82)

0.8 ± 0.2

2

4.8 ± 0.2

S1-D1

7.6 ± 0.2

 

1.6 ± 0.2

2

4.0 ± 0.2

S1-D0

6.8 ± 0.2

422 (2.94)

0.8 ± 0.2

2

5.1 ± 0.2

S1-D1

7.9 ± 0.2

 

1.5 ± 0.2

2

4.4 ± 0.2

S1-D0

7.2 ± 0.2

403 (3.08)

0.9 ± 0.2

2

5.3 ± 0.2

S1-D1

8.1 ± 0.2

 

1.7 ± 0.2

2

4.5 ± 0.2

S1-D0

7.3 ± 0.2

300 (4.13)

0.8 ± 0.2

1

3.3 ± 0.2

—

—

 

1.3 ± 0.2

2

7.0 ± 0.2

S0-D0

7.0 ± 0.2

249.7 (4.97)

0.9 ± 0.2

1

4.1 ± 0.2

S5-D2

8.6 ± 0.2

 

1.8 ± 0.2

1

3.2 ± 0.2

S6-D1

8.0 ± 0.2

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