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Chiral Imidazolium-Functionalized Au Nanoparticles: Reversible Aggregation and Molecular Recognition
[Image: see text] Gold nanoparticles (AuNPs) stabilized by imidazolium salts derived from amino acids [glycine (1), rac-alanine (2), l-phenylalanine (3), and rac-methionine (4)] were prepared. The AuNPs were stabilized the most by 4, which kept the particles dispersed in water for months at pH >...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2016
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640785/ https://www.ncbi.nlm.nih.gov/pubmed/31457170 http://dx.doi.org/10.1021/acsomega.6b00141 |
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author | Lomelí-Rosales, Diego Alberto Rangel-Salas, Irma Idalia Zamudio-Ojeda, Adalberto Carbajal-Arízaga, Gregorio Guadalupe Godoy-Alcántar, Carolina Manríquez-González, Ricardo Alvarado-Rodríguez, José Guadalupe Martínez-Otero, Diego Cortes-Llamas, Sara Angélica |
author_facet | Lomelí-Rosales, Diego Alberto Rangel-Salas, Irma Idalia Zamudio-Ojeda, Adalberto Carbajal-Arízaga, Gregorio Guadalupe Godoy-Alcántar, Carolina Manríquez-González, Ricardo Alvarado-Rodríguez, José Guadalupe Martínez-Otero, Diego Cortes-Llamas, Sara Angélica |
author_sort | Lomelí-Rosales, Diego Alberto |
collection | PubMed |
description | [Image: see text] Gold nanoparticles (AuNPs) stabilized by imidazolium salts derived from amino acids [glycine (1), rac-alanine (2), l-phenylalanine (3), and rac-methionine (4)] were prepared. The AuNPs were stabilized the most by 4, 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 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. |
format | Online Article Text |
id | pubmed-6640785 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66407852019-08-27 Chiral Imidazolium-Functionalized Au Nanoparticles: Reversible Aggregation and Molecular Recognition Lomelí-Rosales, Diego Alberto Rangel-Salas, Irma Idalia Zamudio-Ojeda, Adalberto Carbajal-Arízaga, Gregorio Guadalupe Godoy-Alcántar, Carolina Manríquez-González, Ricardo Alvarado-Rodríguez, José Guadalupe Martínez-Otero, Diego Cortes-Llamas, Sara Angélica ACS Omega [Image: see text] Gold nanoparticles (AuNPs) stabilized by imidazolium salts derived from amino acids [glycine (1), rac-alanine (2), l-phenylalanine (3), and rac-methionine (4)] were prepared. The AuNPs were stabilized the most by 4, 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 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. American Chemical Society 2016-11-09 /pmc/articles/PMC6640785/ /pubmed/31457170 http://dx.doi.org/10.1021/acsomega.6b00141 Text en Copyright © 2016 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Lomelí-Rosales, Diego Alberto Rangel-Salas, Irma Idalia Zamudio-Ojeda, Adalberto Carbajal-Arízaga, Gregorio Guadalupe Godoy-Alcántar, Carolina Manríquez-González, Ricardo Alvarado-Rodríguez, José Guadalupe Martínez-Otero, Diego Cortes-Llamas, Sara Angélica Chiral Imidazolium-Functionalized Au Nanoparticles: Reversible Aggregation and Molecular Recognition |
title | Chiral Imidazolium-Functionalized Au Nanoparticles:
Reversible Aggregation and Molecular Recognition |
title_full | Chiral Imidazolium-Functionalized Au Nanoparticles:
Reversible Aggregation and Molecular Recognition |
title_fullStr | Chiral Imidazolium-Functionalized Au Nanoparticles:
Reversible Aggregation and Molecular Recognition |
title_full_unstemmed | Chiral Imidazolium-Functionalized Au Nanoparticles:
Reversible Aggregation and Molecular Recognition |
title_short | Chiral Imidazolium-Functionalized Au Nanoparticles:
Reversible Aggregation and Molecular Recognition |
title_sort | chiral imidazolium-functionalized au nanoparticles:
reversible aggregation and molecular recognition |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640785/ https://www.ncbi.nlm.nih.gov/pubmed/31457170 http://dx.doi.org/10.1021/acsomega.6b00141 |
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