Method for bulk separation of single-walled tubular fullerenes based on chirality
US6669918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Dec 10, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/845
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for bulk separation of single-walled tubular fullerenes (100) based on chirality is provided wherein a first step is the formation of a template (40) on a crystalline substrate (30). The template (40) has a plurality of openings (32) which are oriented to energetically favor adsorption of a respective plurality of single-walled fullerenes (100) having a tubular contour and a selected chirality. Next, the template (40) is exposed to a suspension (16) of single-walled tubular fullerenes (100) of random chiralities for adsorption of single-walled tubular fullerenes (100) of the selected chirality into the openings (32) of template (40). Then, the template (40) is removed from exposure to the suspension (16) and the adsorbed single-walled tubular fullerenes (100) of the selected chirality are removed from the template (40). The template (40) may then be reused to adsorb further tubular fullerenes (100) of the selected chirality from a suspension (16) of tubular fullerenes (100) of random chiralities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.