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The AuNPs were stabilized the most by 4, which kept the particles dispersed in water for months at pH &amp;gt; 5.5. These AuNPs exhibited a well-defined absorption band at 517 nm and had an average particle size of 11.21 \u00b1 0.07 nm. The 4-AuNPs were reversibly aggregated by controlling the pH of the solution. Chiral R,R-4-AuNPs and S,S-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.<\/jats:p>","DOI":"10.1021\/acsomega.6b00141","type":"journal-article","created":{"date-parts":[[2016,11,9]],"date-time":"2016-11-09T07:57:06Z","timestamp":1478678226000},"page":"876-885","source":"Crossref","is-referenced-by-count":12,"title":["Chiral Imidazolium-Functionalized Au Nanoparticles:\nReversible Aggregation and Molecular Recognition"],"prefix":"10.1021","volume":"1","author":[{"given":"Diego Alberto","family":"Lomeli\u0301-Rosales","sequence":"first","affiliation":[{"name":"Universidad de Guadalajara , , Blvd. Marcelino Garci\u0301a Barraga\u0301n #1421, esq. 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