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Temperature-Derived Purification of Gold Nano-Bipyramids for Colorimetric Detection of Tannic Acid
[Image: see text] Gold nanostructures have attracted broad attention. Among various nanostructures, gold nanobipyramids have shown great potential in sensing, biomedicine, environmental protection, chemical catalysis, and optics due to their unique physical and optical properties and ease of chemica...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10353004/ https://www.ncbi.nlm.nih.gov/pubmed/37469507 http://dx.doi.org/10.1021/acsanm.3c01593 |
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author | Xue, Yuxiang Ma, Xinyao Feng, Xue Roberts, Sam Zhu, Guangyu Huang, Yi Fan, Xianfeng Fan, Jun Chen, Xianfeng |
author_facet | Xue, Yuxiang Ma, Xinyao Feng, Xue Roberts, Sam Zhu, Guangyu Huang, Yi Fan, Xianfeng Fan, Jun Chen, Xianfeng |
author_sort | Xue, Yuxiang |
collection | PubMed |
description | [Image: see text] Gold nanostructures have attracted broad attention. Among various nanostructures, gold nanobipyramids have shown great potential in sensing, biomedicine, environmental protection, chemical catalysis, and optics due to their unique physical and optical properties and ease of chemical functionalization. Compared with other plasmonic nanostructures, gold nanobipyramids possess narrow optical resonances, stronger plasmonic local field enhancement, and size- and shape-dependent surface plasmon resonance. However, the synthesis and purification of homogeneous gold nanobipyramids are very challenging. The gold nanobipyramids synthesized via the commonly used seed-mediated growth method have low yields and are often coproduced with spherical nanoparticles. In this study, we reported a temperature-derived purification method for the isolation of gold bipyramids. In the presence of salt, by altering the temperature of the solution, large gold bipyramids can be separated from small spherical nanoparticles. As a result, a yield of as high as 97% gold nanobipyramids can be achieved through a single round of purification, and correspondingly, the ratio between the longitudinal surface plasmon resonance (LSPR) and transverse SPR intensity significantly increases to as high as 6.7. The purified gold nanobipyramids can be used as a colorimetric probe in the detection of tannic acid with a detection limit of 0.86 μM and a linear detection range from 1.25 to 37.5 μM. |
format | Online Article Text |
id | pubmed-10353004 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-103530042023-07-19 Temperature-Derived Purification of Gold Nano-Bipyramids for Colorimetric Detection of Tannic Acid Xue, Yuxiang Ma, Xinyao Feng, Xue Roberts, Sam Zhu, Guangyu Huang, Yi Fan, Xianfeng Fan, Jun Chen, Xianfeng ACS Appl Nano Mater [Image: see text] Gold nanostructures have attracted broad attention. Among various nanostructures, gold nanobipyramids have shown great potential in sensing, biomedicine, environmental protection, chemical catalysis, and optics due to their unique physical and optical properties and ease of chemical functionalization. Compared with other plasmonic nanostructures, gold nanobipyramids possess narrow optical resonances, stronger plasmonic local field enhancement, and size- and shape-dependent surface plasmon resonance. However, the synthesis and purification of homogeneous gold nanobipyramids are very challenging. The gold nanobipyramids synthesized via the commonly used seed-mediated growth method have low yields and are often coproduced with spherical nanoparticles. In this study, we reported a temperature-derived purification method for the isolation of gold bipyramids. In the presence of salt, by altering the temperature of the solution, large gold bipyramids can be separated from small spherical nanoparticles. As a result, a yield of as high as 97% gold nanobipyramids can be achieved through a single round of purification, and correspondingly, the ratio between the longitudinal surface plasmon resonance (LSPR) and transverse SPR intensity significantly increases to as high as 6.7. The purified gold nanobipyramids can be used as a colorimetric probe in the detection of tannic acid with a detection limit of 0.86 μM and a linear detection range from 1.25 to 37.5 μM. American Chemical Society 2023-06-27 /pmc/articles/PMC10353004/ /pubmed/37469507 http://dx.doi.org/10.1021/acsanm.3c01593 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Xue, Yuxiang Ma, Xinyao Feng, Xue Roberts, Sam Zhu, Guangyu Huang, Yi Fan, Xianfeng Fan, Jun Chen, Xianfeng Temperature-Derived Purification of Gold Nano-Bipyramids for Colorimetric Detection of Tannic Acid |
title | Temperature-Derived
Purification of Gold Nano-Bipyramids
for Colorimetric Detection of Tannic Acid |
title_full | Temperature-Derived
Purification of Gold Nano-Bipyramids
for Colorimetric Detection of Tannic Acid |
title_fullStr | Temperature-Derived
Purification of Gold Nano-Bipyramids
for Colorimetric Detection of Tannic Acid |
title_full_unstemmed | Temperature-Derived
Purification of Gold Nano-Bipyramids
for Colorimetric Detection of Tannic Acid |
title_short | Temperature-Derived
Purification of Gold Nano-Bipyramids
for Colorimetric Detection of Tannic Acid |
title_sort | temperature-derived
purification of gold nano-bipyramids
for colorimetric detection of tannic acid |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10353004/ https://www.ncbi.nlm.nih.gov/pubmed/37469507 http://dx.doi.org/10.1021/acsanm.3c01593 |
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