Two stable, purely organic luminogens exhibit both mechano- (ML) and photoluminescence (PL) with dual fluorescence-phosphorescence emissions at room temperature. Careful analysis of the crystal structures, coupled with theoretical calculations, demonstrate that room-temperature phosphorescence and ML properties are strongly related to molecular packing. In particular, the formation and fracture of molecular dimers with intermolecular charge-transfer properties has a significant effect on intersystem crossing, as well as excited triplet state emissions, in both PL and ML processes.

The as-obtained NiCo2O4@CoMoO4/NF-7 electrode exhibits superior electrocatalytic performance and extraordinary durability for OER, HER, and overall water splitting.

Using Ni(OH)2/Ni3S2-12h as a bifunctional water splitting catalyst, with an overpotential of ∼340 mV, which is obtained at a very low cell voltage of 1.57 V with a current density of 10 mA cm−2in 1.0 M KOH.