Phase transfer of triangular silver nanoprisms from aqueous to organic solvent by an amide coupling reaction
In this paper, we describe a procedure for the phase transfer of silver nanoprisms (AgNPrs) from aqueous solution to chloroform via an amide coupling reaction. AgNPrs are first modified with 16-mercaptohexadecanoic acid (MHA), and then primary or secondary amines are attached to the carboxylic acid...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 29(2013), 23 vom: 11. Juni, Seite 7052-60 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2013
|
| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't 16-mercaptohexadecanoic acid Amides Palmitic Acids Solvents Water 059QF0KO0R Silver 3M4G523W1G |
| Zusammenfassung: | In this paper, we describe a procedure for the phase transfer of silver nanoprisms (AgNPrs) from aqueous solution to chloroform via an amide coupling reaction. AgNPrs are first modified with 16-mercaptohexadecanoic acid (MHA), and then primary or secondary amines are attached to the carboxylic acid end of the MHA ligand through a carbodiimide-mediated amide coupling step. Secondary amines, such as dicyclohexylamine and diphenylamine, are found to solubilize the nanoparticles in chloroform, whereas primary amines (e.g., butylamine and hexadecylamine) do not result in phase transfer. It is found that the AgNPrs functionalized with dicyclohexylamine show the highest stability and the least aggregation after undergoing phase transfer; in contrast, with a less nucleophilic amine, such as diphenylamine, the amide coupling reaction does not go to completion and the resultant AgNPrs are less stable and more prone to aggregation |
|---|---|
| Beschreibung: | Date Completed 10.01.2014 Date Revised 11.06.2013 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la4005856 |