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Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection

In this work, a series of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine (PDA) were controllably synthesized and achieve highly sensitive SERS detection. Owing to the existence of abundant catechol and amine functional groups, PDA molecules could assemble a functional la...

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Detalles Bibliográficos
Autores principales: Zhang, Zhiliang, Si, Tiantian, Liu, Jun, Han, Kehui, Zhou, Guowei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9083319/
https://www.ncbi.nlm.nih.gov/pubmed/35539994
http://dx.doi.org/10.1039/c8ra04936j
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author Zhang, Zhiliang
Si, Tiantian
Liu, Jun
Han, Kehui
Zhou, Guowei
author_facet Zhang, Zhiliang
Si, Tiantian
Liu, Jun
Han, Kehui
Zhou, Guowei
author_sort Zhang, Zhiliang
collection PubMed
description In this work, a series of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine (PDA) were controllably synthesized and achieve highly sensitive SERS detection. Owing to the existence of abundant catechol and amine functional groups, PDA molecules could assemble a functional layer on the surface of silver nanowires (AgNWs) and exhibit exceptional adhesion performance. More importantly, silver nanoparticles (AgNPs) with controlled coverage and size were achieved on the surface of the PDA layer by in situ reduction of silver ions into AgNPs with catechol functional groups, forming AgNWs@PDA@AgNPs core–shell nanocobs. By regulating synergistical effect between the AgNWs and AgNPs, the AgNWs@PDA@AgNPs core–shell nanocobs demonstrated a highly sensitive and stable SERS response to Rhodamine 6G (R6G) molecules, and a low limit of detection down to 10(−12) M. Furthermore, the AgNWs@PDA@AgNPs core–shell nanocobs showed an excellent reproducibility and superior stability as a SERS substrate to achieve trace detection. This strategy would have great potential to fabricate multifarious SERS-active substrates that make it possible to detect single molecules and singles cell in chemical and biological fields.
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spelling pubmed-90833192022-05-09 Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection Zhang, Zhiliang Si, Tiantian Liu, Jun Han, Kehui Zhou, Guowei RSC Adv Chemistry In this work, a series of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine (PDA) were controllably synthesized and achieve highly sensitive SERS detection. Owing to the existence of abundant catechol and amine functional groups, PDA molecules could assemble a functional layer on the surface of silver nanowires (AgNWs) and exhibit exceptional adhesion performance. More importantly, silver nanoparticles (AgNPs) with controlled coverage and size were achieved on the surface of the PDA layer by in situ reduction of silver ions into AgNPs with catechol functional groups, forming AgNWs@PDA@AgNPs core–shell nanocobs. By regulating synergistical effect between the AgNWs and AgNPs, the AgNWs@PDA@AgNPs core–shell nanocobs demonstrated a highly sensitive and stable SERS response to Rhodamine 6G (R6G) molecules, and a low limit of detection down to 10(−12) M. Furthermore, the AgNWs@PDA@AgNPs core–shell nanocobs showed an excellent reproducibility and superior stability as a SERS substrate to achieve trace detection. This strategy would have great potential to fabricate multifarious SERS-active substrates that make it possible to detect single molecules and singles cell in chemical and biological fields. The Royal Society of Chemistry 2018-07-31 /pmc/articles/PMC9083319/ /pubmed/35539994 http://dx.doi.org/10.1039/c8ra04936j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Zhang, Zhiliang
Si, Tiantian
Liu, Jun
Han, Kehui
Zhou, Guowei
Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection
title Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection
title_full Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection
title_fullStr Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection
title_full_unstemmed Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection
title_short Controllable synthesis of AgNWs@PDA@AgNPs core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive SERS detection
title_sort controllable synthesis of agnws@pda@agnps core–shell nanocobs based on a mussel-inspired polydopamine for highly sensitive sers detection
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9083319/
https://www.ncbi.nlm.nih.gov/pubmed/35539994
http://dx.doi.org/10.1039/c8ra04936j
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