Fig. 4: Biocompatibility in vitro of (MDABCOBr)-NH4(BF4)3.

a Illustration of the lead toxification in the human body. b Schematic of replacing Pb2+ with NH4+ as the B-site cation. c Flow chart of CCK8 experiment. d Cell viability of (MDABCOBr)-NH4(BF4)3 over 24 and 48 h calculated as the fraction of total living cells. e (MDABCOBr)-NH4(BF4)3 images of the live/dead staining of planktonic S. aureus with different treatments.