. 2023 Dec 10;10(1):e23517. doi: 10.1016/j.heliyon.2023.e23517

Table 2.

Optical data of 2a-g in THF solutions at room temperature.

BPhTC	λ_abs^a/nm		ε₂/10⁴ M⁻¹ cm⁻¹ (% error)	E_g^opt/eV	λ_em^b /nm	Stokes shift/cm⁻¹	Fluorescence^c
BPhTC	λ₁	λ₂	ε₂/10⁴ M⁻¹ cm⁻¹ (% error)	E_g^opt/eV	λ_em^b /nm	Stokes shift/cm⁻¹	Fluorescence^c
2a	365	500	4.78 (2.3)	2.35	520	769	5826
2b	377	501	4.87 (2.9)	2.36	521	766	7686
2c	363, 417	501	3.24 (0.9)	2.34	522	803	3269
2d	366	501	10.6 (0.8)	2.36	520	729	5514
2e	364, 417^d	501	4.34 (1.0)	2.36	521	766	6392
2f	377	501	4.24 (0.6)	2.36	521	766	4581
2g	359, 419	502	1.52 (2.0)	2.36	520	690	4606

Absorption in THF 2.5 X 10⁻⁵ M.

Emission maximum in THF at 10⁻⁶ M, excited at the absorption maximum (λ₂).

Measured from experimental emission spectra as the area under the curve in area units.

Shoulder.