A new donor-acceptor iptycene containing carbazole donors and a thiadiazoloquinoxaline acceptor was synthesized and its photo- and electrochemical properties evaluated. The key intermediate 1 allows a lateral modification through cross-coupling and the (triisopropylsilyl)acetylene product 2 exhibits bright yellow fluorescence with emission lifetimes of 2.42 s in deoxygenated hexane. The long lifetime and high quantum efficiency (73%) is quenched by O2, and therefore attributed to thermally activated delayed fluorescence (TADF). This approach allows functionalization through cross-coupling reactions and depicts a promising scaffold for the synthesis of TADF-active molecules.
from # All Medicine by Alexandros G. Sfakianakis via alkiviadis.1961 on Inoreader http://ift.tt/2uwk166
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