Patent ID: 8292092
Filing Date: 2012-10-23
Classification: B82Y,C01B,Y10T

Abstract:
1. A nanotube composition with at least one pore aperture adapted for filtering a solute in a solution, the nanotube composition comprising: a single-walled carbon nanotube having a pore entrance at an end of the carbon nanotube and a carboxyl group on the pore entrance; and a macrocyclic molecule bonded to the carboxyl group on the carbon nanotube, the macrocyclic molecule forming a ring having an inner van der Waals diameter of between 0.4 nm and 1.1 nm which forms a molecular aperture that is an aperture for the pore entrance, the macrocyclic molecule being arranged and configured to prevent ions from traversing the pore entrance, and the molecular aperture being sized and configured to allow passage of water molecules therethrough.