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Two units of highly stable luminescent triarylmethyl radical, (3,5‐dichloro‐4‐pyridyl)bis(2,4,6‐trichlorophenyl)methyl radical (PyBTM), were bridged by p‐phenylene linker. The photoluminescence quantum yield (PLQY) of PyBTM−PhPyBTM was at most 0.4 % in various organic solvents. Adding two mesityl groups on the terminals did not improve the PLQY. In the MesPyBTM−PhPyBTM−Mes, the mesityl group did not...