fig1

Figure 1. (A) Schematic assembly of a [2 × 2] nucleic acid-based constitutional dynamic network (CDN); (B) The modular construction of the constituents of [2 × 2] CDNs by integrating metal-ion-dependent DNAzyme units as reporter domains and triggering domains as functional units; (C) The orthogonal operation of a [2 × 2] CDN using different triggers and the subsequent recovery of CDN by respective counter-triggers. Figure 1C is quoted with permission from Wang et al.^[63].