fig2
Figure 2. Classification of crystal structures for 2D OIHPs according to phases and organic ligands. (A-C) Structures and organic ligands of three types of (100) oriented 2D OIHPs; (A) Ruddlesden-Popper (RP), (B) Dion-Jacobson (DJ), and (C) Alternating cations in the interlayer space (ACI) phase. Reprinted with permission from ref.[22]: Copyright 2021, Wiley-VCH GmbH.
