Study on emission quenching by 2,2,6,6-tetramethyl-1-piperidinyloxy free radical

The emission quenching mechanism of four emissive compounds by 2,2,6,6-tetramethyl-1-piperidinyloxy free radical (TEMPO) was investigated using steady state and transient state spectroscopy. The quenching mechanism was considered to be the radical triplet pair mechanism (RTPM) from the experimental results of both the emission quenching study and the steady state and time resolved electron spin resonance (SSESR and TRESR) studies.

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