Cooperative bonding affords a holesome story
Article Abstract:
A robust hydrogen-bonded porous crystal has been synthesized. The organic molecule that self-assembles to form a three-dimensional, hydrogen-bonded network is pseudo-tetrahedral that has complementary hydrogen-bond donors and acceptors on its periphery. The hydrogen-bonded network has some unusual properties, such as the ability of the roughly square cavities that make up the hydrogen-bonded network to crosslink, making the cavity an infinite microchannel, whose inner walls contain the excess hydrogen-bond-donor sites that efficiently bind solvent molecules, such as 1,4-dioxane, acetonitrile and water. The crystals may lose solvent under vacuum, but retain their crystalline form even after losing 66% of the dioxane molecules.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Sugars out in the open
Article Abstract:
Research into the structure of the cell-wall polysaccharides of a poorly characterized Proteus microorganism has led to the discovery of the first example of an open-chain glycosidic linkage. It is not known whether the bacterial polysaccharides found to contain these new linkages have significant biological functions. It is possible that they play an important role in the stability of the cell walls, or they may be significant cell-wall antigens.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Photorespiration protects C3 plants from photooxidation. Plants on the web. Plants condemned as pesticides
- Abstracts: Conservation scientists and the policy process. Population growth in the United States and Canada: a role for scientists
- Abstracts: Control of compartmental affinity boundaries by Hedgehog. Induction and regulation of the IgE response
- Abstracts: Observation of negative electron-binding energy in a molecule. Archetypal energy landscapes
- Abstracts: Super slippery solids. Making every photon count. Super photon counters