Bruno C. Batista and Oliver Steinbock
Chem. Commun., 2022,58, 12736-12739
DOI:
10.1039/D2CC05611A,
Communication
We report the shape-preserving conversion of self-assembled CaCO3 microtubes to PbCO3 and MAPbBr3 perovskite. The first step induces the growth of cerussite needles on the outer surface. When further converted, these hedgehog-like structures become fluorescent. Additional spatial control of the process yields Janus tubes of CaCO3 and perovskite segments.