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

Table 3.

Optical data of 2a-g in solid films at room temperature.

BPhTC	λ_abs^a/nm		E_g^opt/eV	λ_em^b/nm	Stokes shift/cm⁻¹	Fluorescence^c
BPhTC	λ₁	λ₂	E_g^opt/eV		Stokes shift/cm⁻¹	Fluorescence^c
2a	367	526	2.18	607	2537	1456
2b	381	522	2.22	606	2655	3538
2c	365	523	2.19	592	2229	1111
2d	379	522	2.20	604	2601	3702
2e	364	521	2.19	575	1806	1742
2f	375	527	2.19	562	1182	870
2g	372	518	2.22	584	2182	1954

Absorption of thin solid films.

Emission of thin solid film exited at the absorption maximum (λ₂).

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