Shape and color of au nanoparticles follow biocatalytic processes
The NAD(P)H-mediated growth of Au nanoparticles (NPs) in the presence of ascorbic acid, AuCl4-, and cetyltrimethylammonium bromide leads to the formation of shaped NP structures consisting of dipods, tripods, and tetrapods. The shaped particles exhibit a red-shifted plasmon absorbance at lambda = 68...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 21(2005), 13 vom: 21. Juni, Seite 5659-62 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2005
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article Gold Compounds NAD 0U46U6E8UK gold chloride 11118-27-7 NADP 53-59-8 Ascorbic Acid PQ6CK8PD0R |
| Zusammenfassung: | The NAD(P)H-mediated growth of Au nanoparticles (NPs) in the presence of ascorbic acid, AuCl4-, and cetyltrimethylammonium bromide leads to the formation of shaped NP structures consisting of dipods, tripods, and tetrapods. The shaped particles exhibit a red-shifted plasmon absorbance at lambda = 680 nm, consistent with the existence of a longitudinal plasmon exciton. High-resolution transmission electron microscopy analysis of the tripod and tetrapod structures reveals directional growth along the <211> and <010> directions, respectively. The shaped Au NPs could be generated by a biocatalytic process using alcohol dehydrogenase, NAD+, and ethanol, and the resulting blue color provides a colorimetric test for ethanol |
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| Beschreibung: | Date Completed 23.06.2006 Date Revised 21.11.2013 published: Print Citation Status MEDLINE |
| ISSN: | 1520-5827 |