Single crystals of an ionic anthracene aggregate with a triplet ground state
Article Abstract:
The sterically limited solvation by tetrahydrofuran, known for Na+ countercations, favours the self-aggregation within the solvent-dependent equilibria network of electron transfer and contact ion formation. This research focused on the anaerobic crystallization of an ionic organic aggregate. The electronic ground state was shown experimentally to be a triplet. It appears that the synthesis of air-stable biradicals with lipophilically shielding paramagnetic organometallic ligands on both ends with a suitable spin propagating transductor is feasible.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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Two-dimensional crystallization
Article Abstract:
Two-dimensional crystal growth of latex particles on a solid substrate was observed to be a two-stage process. First, crystal nuclei are formed when the layer of water evaporates to a level equal to the thickness of the particles. This indicates that the formation was governed by capillary forces acting between the partially immersed particles. Second, a convective flow resulting from evaporation from the ordered particles brings additional particles and results in crystal growth.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Suppression of crystal nucleation in polydisperse colloids due to increase of the surface free energy
Article Abstract:
Simulations of crystal nucleation in suspensions of colloidal spheres with a range of size distributions indicate that the probability that critical nuclei will occur itself undergoes a maximum as the supersaturation is raised. Crystallization was not found in suspensions with a polydispersity higher than 12%, probably because crystals do not form.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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