Hydroxyapatite Modified with Silver Nanoparticles for Recording the SERS Spectra of Differently Charged Analytes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494649" target="_blank" >RIV/00216208:11320/24:10494649 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V2MyUqu5cg" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V2MyUqu5cg</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10812-024-01815-8" target="_blank" >10.1007/s10812-024-01815-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydroxyapatite Modified with Silver Nanoparticles for Recording the SERS Spectra of Differently Charged Analytes

Popis výsledku v původním jazyce

The surface of hydroxyapatite (HA) was functionalized with silver nanoparticles by reducing silver nitrate in the presence of glucose or hydrazine hydrochloride. Two types of (HA)Ag nanocomposite were obtained presumably possessing excess negative charge ((HA)Ag-I) or positive charge ((HA)Ag-II). Plasmonic coatings of (HA)Ag-I and (HA)Ag-II nanoparticles were formed on the surface of glass substrates using the droplet deposition method and their structural and spectral properties were studied. A comparative study of the intensity of surface-enhanced Raman scattering (SERS) spectra of cationic and anionic porphyrins CuTMpyP4 and CuTPPS4 as well as rhodamine 6G adsorbed on the surface of both types of nanocomposites was carried out. Plasmonic structures (HA)Ag-I provide the greatest enhancement of the SERS signal for the cationic porphyrin CuTMpyP4, while high spectral intensity is observed for the anionic porphyrin CuTPPS4 adsorbed on films of the (HA)Ag-II composite, which is almost forty times higher than for (HA)Ag-I. For Rh6G molecules with charge +1, the efficiency of the SERS signal amplification by (HA)Ag-II nanostructures is several times higher than by plasmonic films of (HA)Ag-I. Hence, feasibility was demonstrated for obtaining various SERS-active substrates with highly-efficient SERS enhancement for both anionic and cationic analyte molecules by changing the synthesis conditions.

Název v anglickém jazyce

Hydroxyapatite Modified with Silver Nanoparticles for Recording the SERS Spectra of Differently Charged Analytes

Popis výsledku anglicky

The surface of hydroxyapatite (HA) was functionalized with silver nanoparticles by reducing silver nitrate in the presence of glucose or hydrazine hydrochloride. Two types of (HA)Ag nanocomposite were obtained presumably possessing excess negative charge ((HA)Ag-I) or positive charge ((HA)Ag-II). Plasmonic coatings of (HA)Ag-I and (HA)Ag-II nanoparticles were formed on the surface of glass substrates using the droplet deposition method and their structural and spectral properties were studied. A comparative study of the intensity of surface-enhanced Raman scattering (SERS) spectra of cationic and anionic porphyrins CuTMpyP4 and CuTPPS4 as well as rhodamine 6G adsorbed on the surface of both types of nanocomposites was carried out. Plasmonic structures (HA)Ag-I provide the greatest enhancement of the SERS signal for the cationic porphyrin CuTMpyP4, while high spectral intensity is observed for the anionic porphyrin CuTPPS4 adsorbed on films of the (HA)Ag-II composite, which is almost forty times higher than for (HA)Ag-I. For Rh6G molecules with charge +1, the efficiency of the SERS signal amplification by (HA)Ag-II nanostructures is several times higher than by plasmonic films of (HA)Ag-I. Hence, feasibility was demonstrated for obtaining various SERS-active substrates with highly-efficient SERS enhancement for both anionic and cationic analyte molecules by changing the synthesis conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Spectroscopy

ISSN

0021-9037

e-ISSN

1573-8647

Svazek periodika

91

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

1017-1024

Kód UT WoS článku

001355295500001

EID výsledku v databázi Scopus

2-s2.0-85209141063