Fig. 1: Chemical structures of the radical families studied here and nature of their light emission. | Nature Communications

Fig. 1: Chemical structures of the radical families studied here and nature of their light emission.

From: Mesitylated trityl radicals, a platform for doublet emission: symmetry breaking, charge-transfer states and conjugated polymers

Fig. 1

a Chemical structures for M3TTM radical and its conjugated D–A• radical and polyradical derivatives M2TTM-3PCz and PFMTTM, respectively. The teal colour represents the TTM structure, whereas the orange and red highlights stand for mesityl and donor groups, respectively. b Vertical and adiabatic excited states of M3TTM radical based on its computationally optimized D0 and D1 geometries, respectively. Enhanced D1 emission is described as short-range charge transfer contribution from both the chlorophenyl rings \(\left|{{{{{{\rm{D}}}}}}}_{1({{{{{\rm{L}}}}}}-{{{{{{\rm{C}}}}}}}^{\bullet })}^{(0)}\right\rangle\) and the mesityl groups \(|{{{{{{\rm{D}}}}}}}_{1\left({{{{{\rm{Mes}}}}}}-{{{{{{\rm{C}}}}}}}^{\bullet }\right)}^{(0)}\rangle\). c Normalized PL spectra of M3TTM, M2TTM-3PCz and PFMTTM in 0.1 mM toluene solutions (the corresponding optical absorption spectra are included in Supplementary Fig. 5).

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