Ruhl, JuliaJuliaRuhlOberhof, NilsNilsOberhofDreuw, AndreasAndreasDreuwWegner, Hermann A.Hermann A.Wegner2023-12-072023-12-072023https://jlupub.ub.uni-giessen.de/handle/jlupub/18760http://dx.doi.org/10.22029/jlupub-18124The incorporation of heteroatoms into hydrocarbon compounds greatly expands the chemical space of molecular materials. In this context, B−N doping takes a center stage due to its isosterism with a C=C-bond. Herein, we present a new and modular synthetic concept to access novel diazadiborabenzo[b]triphenylenes 7 a–h using the B−N doped biradical 16 as intermediate. Characterization of the photophysical properties revealed the emission spectra of the diazadibora benzo[b]triphenylenes 7 a–h can conveniently be tuned by small changes of the substitution on the boron-atom. All of the diazadibora compounds show a short life-time phosphorescence. Additionally, we were able to rationalize the excited-state relaxation of the diazadiboraacene 7 a via intersystem crossing by quantum chemical calculations. The new synthetic strategy provides an elegant route to various novel B−N doped acenes with great potential for applications in molecular materials.enNamensnennung - Nicht kommerziell 4.0 Internationalddc:540