Formation of nanometer-scale structures

Details Formation of nanometer-scale structures Formation of nanometer-scale structures

A - Human Necessities

61

K

A61K 31/185 (2006.01) A61K 31/05 (2006.01) A61K 31/19 (2006.01) A61K 31/195 (2006.01) A61K 31/197 (2006.01) A61K 31/445 (2006.01) A61K 31/451 (2006.01) A61K 45/06 (2006.01) C07F 1/00 (2006.01) C07F 3/00 (2006.01) C07F 5/00 (2006.01)

Patent

CA 2380892

Amphiphilic, polyhedron-shaped p-sulfonatocalix[4]arene building blocks, which have been shown previously to assemble into bilayers in an antiparallel fashion, assemble in a parallel alignment into spherical and helical tubular structures on the addition of pyridine N-oxide and lanthanide ions. The addition of greater amounts of pyridine N-oxide changed the curvature of the assembling surface and led to the formation of extended tubules. The inventive compositions and methods are useful for drug delivery and construction of nano- devices.

L'invention concerne des éléments structuraux p-sulfonatocalix[4]arène amphiphiles de forme polyédrique, dont on a montré antérieurement qu'ils s'assemblaient en bicouches de manière antiparallèle, qui peuvent s'assembler dans un alignement parallèle en structures tubulaires sphériques et hélicoïdales, suite à l'adjonction de N-oxyde de pyridine et d'ions lanthanide. L'adjonction de quantités accrues de N-oxyde de pyridine modifie la courbure de la surface d'assemblage et conduit à la formation de tubules allongés. Les compositions et les procédés décrits sont utiles pour la délivrance de médicaments et la réalisation de structures à l'échelle nanométrique.

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