Efficient hydrogen sorption in 8-connected MOFs based on trinuclear pinwheel motifs
- Authors
- Chun, Hyungphil; Jung, Heejin; Koo, Gumae; Jeong, Heondo; Kim, Dong-Kook
- Issue Date
- Jun-2008
- Publisher
- American Chemical Society
- Citation
- Inorganic Chemistry, v.47, no.12, pp.5355 - 5359
- Indexed
- SCIE
SCOPUS
- Journal Title
- Inorganic Chemistry
- Volume
- 47
- Number
- 12
- Start Page
- 5355
- End Page
- 5359
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/42373
- DOI
- 10.1021/ic800274w
- ISSN
- 0020-1669
- Abstract
- Two new metal-organic frameworks based on trinuclear pinwheel motifs are prepared using dicarboxylate and diamine ligands. The structure of (CO3(bdC)(3)(dabco)] (1) (bdc = 1,4-benzenedicarboxylate; dabco = 1,4-diazabicyclo[2.2.2]octane) is described as pillared layers, whereas [Co-3(ndc)(3)(dabco)] (2) (ndc = 2,6-naphthalenedicarboxylate) forms a variation of primitive cubic net with 3D connected pores. The two 8-connected MOFs are thermally stable at 160 and 250 degrees C for 1 and 2 respectively in the air and possess corrugated channels owing to the high connectivities of the secondary building unit. As a result, they show highly efficient hydrogen sorption capabilities. Especially, a high hydrogen uptake (2.45 wt % at 77 K and 1 bar) is observed for 2 that has the unique combination of high surface area and small portals.
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