title: The interplay of thermally activated delayed fluorescence (TADF) and room temperature organic phosphorescence in sterically-constrained donor-acceptor charge-transfer molecules.
abstract: A series of phenothiazine-dibenzothiophene-S,S-dioxide charge-transfer molecules have been synthesized. Increasing steric restriction around the donor-acceptor bond significantly alters contributions from TADF and phosphorescence. Bulky substituents on the 1-(and 9) position(s) of the phenothiazine result in no TADF in the solid state; instead strong phosphorescence is observed at ambient temperature.
authors.affiliation: Department of Chemistry, Durham University, Durham, DH1 3LE, UK. m.r.bryce@durham.ac.uk.
authors.forename: Jonathan S
authors.initials: JS
authors.lastname: Ward
authors.forename: Roberto S
authors.initials: RS
authors.lastname: Nobuyasu
authors.forename: Andrei S
authors.initials: AS
authors.lastname: Batsanov
authors.forename: Przemyslaw
authors.initials: P
authors.lastname: Data
authors.forename: Andrew P
authors.initials: AP
authors.lastname: Monkman
authors.forename: Fernando B
authors.initials: FB
authors.lastname: Dias
authors.forename: Martin R
authors.initials: MR
authors.lastname: Bryce