Ionic conductivity of ß-cyclodextrin-polyethylene-oxide/alkali-metal-salt complex.

Highly conductive, crystalline, polymer electrolytes, ß-cyclodextrin (ß-CD)-polyethylene oxide (PEO)/LiAsF6 and ß-CD-PEO/NaAsF6 , were prepared through supramolecular self-assembly of PEO, ß-CD, and LiAsF6 /NaAsF6 . The assembled ß-CDs form nanochannels in which the PEO/X(+) (X=Li, Na) complexes are confined. The nanochannels provide a pathway for directional motion of the alkali metal ions and, at the same time, separate the cations and the anions by size exclusion.

Capacitance immunosensors based on an array biotape.

A new array immunosensing system with high-throughput has been developed, based on the principle of a biotape that could be used to make a biocassette recorder.