Plasmon-assisted grafting of anisotropic nanoparticles-spatially selective surface modification and the creation of amphiphilic SERS nanoprobes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43921019" target="_blank" >RIV/60461373:22310/20:43921019 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22810/20:43921019 RIV/00216208:11320/20:10422519

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2020/NR/D0NR02934C#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2020/NR/D0NR02934C#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0nr02934c" target="_blank" >10.1039/d0nr02934c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Plasmon-assisted grafting of anisotropic nanoparticles-spatially selective surface modification and the creation of amphiphilic SERS nanoprobes

Popis výsledku v původním jazyce

Amphiphilic nanoparticles (NPs) with a spatially selective distribution of grafted functional groups have great potential in the field of sensing, advanced imaging, and therapy due to their unique surface properties. The main techniques for the spatially selective functionalization of NPs utilize the surface-assisted approaches, which significantly restrict their production throughput. In this work, we propose an alternative plasmon-based route for the spatially selective grafting of anisotropic gold nanorods (AuNRs) using iodonium and diazonium salts. Utilization of longer laser wavelengths leads to the excitation of longitudinal plasmon resonances on AuNR tips, plasmon-assisted homolysis of the C-I bond in iodonium salts and the formation of aryl radicals, which are further grafted to the tips of AuNRs. The sides of AuNRs were subsequently decorated through spontaneous diazonium surface grafting. As a result, the AuNRs with spatially separated functional groups were prepared in a versatile way, primarily in solution and without the need for a sophisticated technique of NP immobilization or surface screening. The versatility of the proposed approach was proved on three kinds of AuNRs with different architectures and wavelength positions of plasmon absorption bands. Moreover, the applicability of the prepared amphiphilic AuNRs was shown by efficient trapping and SERS sensing of amphiphilic biomolecules. © 2020 The Royal Society of Chemistry.

Název v anglickém jazyce

Plasmon-assisted grafting of anisotropic nanoparticles-spatially selective surface modification and the creation of amphiphilic SERS nanoprobes

Popis výsledku anglicky

Amphiphilic nanoparticles (NPs) with a spatially selective distribution of grafted functional groups have great potential in the field of sensing, advanced imaging, and therapy due to their unique surface properties. The main techniques for the spatially selective functionalization of NPs utilize the surface-assisted approaches, which significantly restrict their production throughput. In this work, we propose an alternative plasmon-based route for the spatially selective grafting of anisotropic gold nanorods (AuNRs) using iodonium and diazonium salts. Utilization of longer laser wavelengths leads to the excitation of longitudinal plasmon resonances on AuNR tips, plasmon-assisted homolysis of the C-I bond in iodonium salts and the formation of aryl radicals, which are further grafted to the tips of AuNRs. The sides of AuNRs were subsequently decorated through spontaneous diazonium surface grafting. As a result, the AuNRs with spatially separated functional groups were prepared in a versatile way, primarily in solution and without the need for a sophisticated technique of NP immobilization or surface screening. The versatility of the proposed approach was proved on three kinds of AuNRs with different architectures and wavelength positions of plasmon absorption bands. Moreover, the applicability of the prepared amphiphilic AuNRs was shown by efficient trapping and SERS sensing of amphiphilic biomolecules. © 2020 The Royal Society of Chemistry.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GJ19-24603Y" target="_blank" >GJ19-24603Y: Kovová povrchová modifikace - nová generace led-odpuzujicích materiálů.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

27

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

14581-14588

Kód UT WoS článku

000549588900017

EID výsledku v databázi Scopus

2-s2.0-85088266033