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Updated: Jun 1, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
3,4-Dinitro-2,5-bis-[4-(trifluoro-meth-yl)phen-yl]thio-phene
Abstract:
The title compound, C(18)H(8)F(6)N(2)O(4)S, is a precursor for the production of low-band-gap conjugated polymers. In the crystal structure, the dihedral angles between the thio-phene and benzene rings are 35.90 (8) and 61.94 (8)°, and that between the two benzene rings is 40.18 (8)°. The two nitro groups are twisted with respect to the thio-phene ring, the dihedral angles being 53.66 (10) and 31.63 (10)°. Weak inter-molecular C-H⋯O hydrogen bonding helps to stabilize the crystal structure.
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