Long-lived and highly conducting ion channels formed by lipophilic ethylenediamine palladium(<scp>ii</scp>) complexes
作者:Thomas M. Fyles、Christine C. Tong
DOI:10.1039/b610660a
日期:——
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
报道了亲脂性乙二胺钯(II)配合物的合成及其在平面双层膜中的活性。在含有一当量乙腈的乙腈溶液中4,4-联吡啶该配合物形成预期的金属超分子四聚体正方形。相同的混合物会引发三种类型的跨膜电导:行为不稳定的初期,偶尔的短通道状开口以及频繁的超长寿命和高导电性通道开口。短孔和长孔的表观孔半径在0.1-1.5 nm的范围内连续变化,如果不存在长孔,则会形成长寿命孔4,4'-联吡啶。据推测,长寿命通道涉及钯配合物和脂质 围绕膜中的环形孔。