Figure 1: Layered structure and gas pathways of MAMS-1.

(a) FE-SEM image of layered MAMS-1 crystals. Scale bars, 5 μm. (b) Crystal structure of MAMS-1. The ab planes are highlighted in magenta to illustrate the layered structure. (c) Tilted vertical view of ab plane in MAMS-1 monolayer featuring PW1. (d) Amplified view of PW1 gated by two pairs of tert-butyl group highlighted in magenta. (e) View along a axis of MAMS-1 monolayer featuring PW2. The crystal structure is redrawn according to the single crystal structure of MAMS-1 (Cambridge Crystallographic Data Centre No. 617998) (ref. 70).