Photochromic inorganic–organic hybrid: a new approach for switchable photoluminescence in the solid state and partial photochromic phenomenonElectronic supplementary information (ESI) available: Fig. S1–S4 and Table S1. CCDC reference numbers 756322(black 1), 756323(colourless 1) and 756324(yellowish 1). For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c0dt00471e

A photochromic inorganic–organic hybrid based on in situgenerated MV2+cation (MV2+= methyl viologen = N,N′-dimethyl-4,4′-bipyridinium) has been obtained, in which a vagarious partial photochromic phenomenon together with its photoluminescence modulation properties are reported for the first time in the inorganic–organic hybrids. [ABSTRACT FROM AUTHOR]