TADF Invariant of Host Polarity and Ultralong Fluorescence Lifetimes in a Donor‐Acceptor Emitter Featuring a Hybrid Sulfone‐Triarylboron Acceptor**. - Urban, Mateusz; Marek‐Urban, Paulina H.; Durka, Krzysztof; Luliński, Sergiusz; Pander, Piotr; Monkman, Andrew P. (Angewandte Chemie, 2023)