Fig. 1: Guest capture/release mechanism.
From: Combustible ice mimicking behavior of hydrogen-bonded organic framework at ambient condition
a Methane molecules (blue balls) stored within water cage (constructed by red balls and gray sticks) and released (denoted by blue arrows) after cage collapse under different condition, the typical hydrate structure I comprising large 51262 (twelve pentagonal and two hexagonal faces) and small 512 cages is taken for illustration. b Methane molecules (blue balls) stored in MOF (HKUST-1 as an example) cavities release upon applying external energy (heating or vacuum). Orange, red, gray balls, and light gray tetrahedrons denote Cu, O, C atoms, and the subunits within HKUST-1, respectively. H atoms are omitted for clarity. The blue smog denotes the methane gas atmosphere.
