Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods

Localized surface plasmon resonance (LSPR) spectroscopy of metallic nanoparticles is a powerful tool for chemical and biological sensing experiments. In this study, we observed LSPR shifts of 11-mercaptoundecanoic acid modified gold nanorods (GNR-MUA) for the pH range of 6.41 to 8.88. We proposed a...

Descripción completa

Detalles Bibliográficos
Autores principales: Toh, Yon-Rui, Yu, Pyng, Wen, Xiaoming, Tang, Jau, Hsieh, Tao-shih
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2013
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3599965/
https://www.ncbi.nlm.nih.gov/pubmed/23432999
http://dx.doi.org/10.1186/1556-276X-8-103
_version_ 1782475570265718784
author Toh, Yon-Rui
Yu, Pyng
Wen, Xiaoming
Tang, Jau
Hsieh, Tao-shih
author_facet Toh, Yon-Rui
Yu, Pyng
Wen, Xiaoming
Tang, Jau
Hsieh, Tao-shih
author_sort Toh, Yon-Rui
collection PubMed
description Localized surface plasmon resonance (LSPR) spectroscopy of metallic nanoparticles is a powerful tool for chemical and biological sensing experiments. In this study, we observed LSPR shifts of 11-mercaptoundecanoic acid modified gold nanorods (GNR-MUA) for the pH range of 6.41 to 8.88. We proposed a mechanism involving changes of the dipole moment after protonation/deprotonation carboxylic groups of 11-mercaptoundecanoic acid (MUA) which plays an important role by modulating LSPR around the functionalized GNR. Such a stable and easily prepared GNR-MUA has potential to become one of the most efficient and promising pH nanosensors to study intra- or extra-cellular pH in a wide range of chemical or biological systems.
format Online
Article
Text
id pubmed-3599965
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Springer
record_format MEDLINE/PubMed
spelling pubmed-35999652013-03-20 Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods Toh, Yon-Rui Yu, Pyng Wen, Xiaoming Tang, Jau Hsieh, Tao-shih Nanoscale Res Lett Nano Express Localized surface plasmon resonance (LSPR) spectroscopy of metallic nanoparticles is a powerful tool for chemical and biological sensing experiments. In this study, we observed LSPR shifts of 11-mercaptoundecanoic acid modified gold nanorods (GNR-MUA) for the pH range of 6.41 to 8.88. We proposed a mechanism involving changes of the dipole moment after protonation/deprotonation carboxylic groups of 11-mercaptoundecanoic acid (MUA) which plays an important role by modulating LSPR around the functionalized GNR. Such a stable and easily prepared GNR-MUA has potential to become one of the most efficient and promising pH nanosensors to study intra- or extra-cellular pH in a wide range of chemical or biological systems. Springer 2013-02-22 /pmc/articles/PMC3599965/ /pubmed/23432999 http://dx.doi.org/10.1186/1556-276X-8-103 Text en Copyright ©2013 Toh et al; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Toh, Yon-Rui
Yu, Pyng
Wen, Xiaoming
Tang, Jau
Hsieh, Tao-shih
Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods
title Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods
title_full Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods
title_fullStr Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods
title_full_unstemmed Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods
title_short Induced pH-dependent shift by local surface plasmon resonance in functionalized gold nanorods
title_sort induced ph-dependent shift by local surface plasmon resonance in functionalized gold nanorods
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3599965/
https://www.ncbi.nlm.nih.gov/pubmed/23432999
http://dx.doi.org/10.1186/1556-276X-8-103
work_keys_str_mv AT tohyonrui inducedphdependentshiftbylocalsurfaceplasmonresonanceinfunctionalizedgoldnanorods
AT yupyng inducedphdependentshiftbylocalsurfaceplasmonresonanceinfunctionalizedgoldnanorods
AT wenxiaoming inducedphdependentshiftbylocalsurfaceplasmonresonanceinfunctionalizedgoldnanorods
AT tangjau inducedphdependentshiftbylocalsurfaceplasmonresonanceinfunctionalizedgoldnanorods
AT hsiehtaoshih inducedphdependentshiftbylocalsurfaceplasmonresonanceinfunctionalizedgoldnanorods

Ejemplares similares