Access to Strong Thieno[3,2-b]phosphole-Based Solid-State Emitters via Manganese(III)-Mediated Oxidative Annulation

König, N.; Godínez-Loyola, Y.; Weiske, H.; Naumov, S.; Lönnecke, P.; Tonner-Zech, R.; Strassert, C. A.; Hey-Hawkins, E.

Research article (journal) | Peer reviewed

Abstract

The synthesis of novel organic molecular frameworks with strong luminescence in the solid state has become an enormously growing area of current research due to their versatile applications for optoelectronics or bioimaging. Here, a facile synthetic strategy via MnIII-mediated oxidative annulation reaction to obtain propeller-rich molecules bearing a thieno[3,2-b]phosphole motif as a stator moiety is reported. All synthesized compounds show aggregation-induced emission (AIE) characteristics, strong fluorescence in the solid state, and substituent-dependency of the photophysical properties. The phosphinated thieno[3,2-b]phospholes possess a high degree of restrictions on intramolecular motions, leading to powerful solid-state light emitters with fluorescence quantum yields close to 100% and lifetimes up to 7.9 ns, even at room temperature.

Details about the publication

JournalChemistry of Materials (Chem. Mater.)
Volume35
Issue19
Page range8218-8228
StatusPublished
Release year2023
Language in which the publication is writtenEnglish
DOI10.1021/acs.chemmater.3c01734
Link to the full texthttps://api.elsevier.com/content/abstract/scopus_id/85175018996
Keywordsorganic molecular frameworks; luminescence; thieno[3,2-b]phosphole; aggregation-induced emission (AIE)

Authors from the University of Münster

Strassert, Cristian
Professoship for Coordination Chemistry and Functional Imaging