title: Carrier-mediated photodiffusion membranes.
abstract: Reversible photochromic reactions can be coupled to carrier-mediated transport processes in membranes to bring about the separation or concentration of selected permeants. Carbon monoxide has been pumped against of fourfold concentration gradient by differentially illuminating a hemoglobin membrane. The extent of concentration of photochromic ligands increases with light intensity and is reversible. Nonphotochemically sensitive ligands can also be transported by coupling with phostosensitive carrier-mediated systems.
mesh_terms: D001692:Biological Transport; D002248:Carbon Monoxide / Q000097:blood; D004058:Diffusion; D006454:Hemoglobins / Q000378:metabolism; D066298:In Vitro Techniques; D007700:Kinetics; D008566:Membranes / Q000378:metabolism*; D008567:Membranes, Artificial; D009211:Myoglobin / Q000378:metabolism; D010100:Oxygen / Q000097:blood; D010777:Photochemistry
chemical_list: D006454:Hemoglobins; D008567:Membranes, Artificial; D009211:Myoglobin; D002248:Carbon Monoxide; D010100:Oxygen