Table 2 Physical properties of 2F2, 2F25, 4F14-Si₂, 4F13, and 4F14.

Compound	λ_abs^a (nm)	Φ_F^b (%)			λ_onset^e (nm)	E^re_onset^f (V)	HOMO/LUMO^g (eV)	E_g^h (eV)	HOMO/LUMOⁱ (eV)	E_gⁱ (eV)
Compound	λ_abs^a (nm)	THF^c	Film^d	Powder	λ_onset^e (nm)	E^re_onset^f (V)	HOMO/LUMO^g (eV)	E_g^h (eV)	HOMO/LUMOⁱ (eV)	E_gⁱ (eV)
2F2	328	17.8/19.7	5.5	4.2	381	−2.24	−5.41/−2.16	3.25	−5.48/−1.61	3.87
2F25	301, 396	80.8/90.8	3.0	3.5	468	−1.52	−5.62/−2.88	2.74	−5.23/−2.15	3.08
4F14-Si₂	311, 387	56.3/68.0	7.5	11.5	450	−1.80	−5.44/−2.60	2.84	−5.29/−2.29	3.00
4F13	272, 360	68.3/77.9	6.4	38.6	414	−2.12	−5.37/−2.28	3.09	−4.97/−1.62	3.35
4F14	294, 385	55.0/64.5	1.1	1.3	451	−1.89	−5.38/−2.54	2.84	−5.38/−2.37	3.01

^aMeasured in DMF (10⁻⁵ M) under N₂.
^bAbsolute fluorescence quantum yield determined using a calibrated integrating sphere.
^cMeasured in THF (10⁻⁵ M) under air and N₂, respectively.
^dFilm drop-casted on a quartz plate.
^eEstimated from the onset of the UV/Vis absorption spectra.
^fE_onset vs. Fc/Fc⁺ estimated by a CV method using a (Pt) disc electrode, Pt wire as a counter electrode, and Ag/AgNO₃ as a reference electrode in DMF.
^gObtained from CV in DMF/n-Bu₄NClO₄ and estimated from LOMO = −(4.40 − E^re_onset); HUMO = LOMO − E_g.
^hObtained from the absorption edge, E_g = 1240/λ_onset.
ⁱObtained from DFT calculations.

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