Journal
ANALYTICAL CHEMISTRY
Volume 73, Issue 4, Pages 768-775Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac0008901
Keywords
-
Categories
Ask authors/readers for more resources
An electroless gold plating method was used to deposit Au nanotubules within the pores of a polycarbonate template membrane. ps-switchable ion-transport selectivity was introduced by chemisorbing L-cysteine to the inside tubule walls. At low pH, where both the amino and carboxyl groups of the cysteine are protonated, these membranes preferentially reject cations and transport anions. At high pH, where both the amino and carboxyl groups are deprotonated, these membranes preferentially reject anions and transport cations, At pH = 6.0, near the isoelectric point of the chemisorbed cysteine, these membranes show neither cation nor anion transport selectivity. In addition to this electrostatically based selectivity, because of the small inside diameter of the Au nanotubules (as small as 0.9 nm), these membranes show molecular-size-based selectivity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available