Long-lived and highly conducting ion channels formed by lipophilic ethylenediamine palladium(ii ) complexes
Autor: | Christine C. Tong, Thomas M. Fyles |
---|---|
Rok vydání: | 2007 |
Předmět: | |
Zdroj: | New J. Chem.. 31:655-661 |
ISSN: | 1369-9261 1144-0546 |
Popis: | The synthesis of a lipophilic ethylenediamine palladium(II) complex and its activity in planar bilayer membranes are reported. In acetonitrile solution containing one equivalent of 4,4-bipyridine the complex forms the expected metallosupramolecular tetrameric square. The same mixture provokes transmembrane conductance of three types: an initial period of erratic behavior, occasional short channel-like openings, and frequent very long-lived and highly conducting channel openings. The apparent pore radii of both short and long openings vary continuously over the range of 0.1–1.5 nm, and long-lived pores will form in the absence of 4,4′-bipyridine. The long-lived channels are presumed to involve an extended aggregate of the palladium complex and lipids surrounding a toroidal pore in the membrane. |
Databáze: | OpenAIRE |
Externí odkaz: |