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Article Abstract
Gold nanoparticles (AuNPs) stabilized by imidazolium salts derived from amino acids [glycine (), -alanine (), l-phenylalanine (), and -methionine ()] were prepared. The AuNPs were stabilized the most by , which kept the particles dispersed in water for months at pH > 5.5. These AuNPs exhibited a well-defined absorption band at 517 nm and had an average particle size of 11.21 ± 0.07 nm. The 4-AuNPs were reversibly aggregated by controlling the pH of the solution. Chiral ,-4-AuNPs and ,-4-AuNPs were synthesized, and the chiral environment on the nanoparticle surface was confirmed using circular dichroism; these nanoparticles exhibited a molecular recognition of chiral substrates. Furthermore, they showed potential for separating racemic mixtures when supported on a layered double hydroxide.
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| http://dx.doi.org/10.1021/acsomega.6b00141 | DOI Listing |
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