Reversible structural transformations and color-tunable emissions in organic manganese halides

Herein, we for the first time report a reversible conversion between green-emissive [DMPZ]MnCl 4 and red-emissive [DMPZ] 4 (MnCl 6 )(MnCl 4 ) 2· (H 2 O) 2 (DMPZ = 1,4-dimethylpiperazine) using kinetic and thermodynamic controlling strategies. Significantly, the synchronous structural and emission transformations in single-component organic manganese halides with adjustable emission colors are highlighted. Two zero-dimensional hybrid manganese perovskites exhibit intrinsic green and red light emissions, respectively. Reversible structural and PL transformations can be achieved using dynamic controlling and thermodynamic controlling strategies.