SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10080560" target="_blank" >RIV/00216208:11320/11:10080560 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.molstruc.2010.12.037" target="_blank" >http://dx.doi.org/10.1016/j.molstruc.2010.12.037</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molstruc.2010.12.037" target="_blank" >10.1016/j.molstruc.2010.12.037</a>

Jazyk výsledku

angličtina

Název v původním jazyce

SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles

Popis výsledku v původním jazyce

SERRS spectra of cationic 5,10,15,20-tetrakis(1-methyl-4-pyridyl)porphyrin (TMPyP) on Ag nanoparticles immobilized to glass via silane or by drying were measured using confocal Raman microspectrometer. The limit of detection (LOD) of TMPyP on Ag silanized glass plates was ~ 1x10-8 M, but spectra suffered from presence of spurious bands originating from carbon species mainly as a result of thermal decomposition of silane. Ag colloid/TMPyP drops dried on glass show better spectra and fewer spurious bandsfor the same TMPyP concentration compared to the silanized surfaces. Dried drops form a ring in the edge part of the drop containing high enhancing sites (big aggregates with some ''hot spots'') providing high SERRS signal of TMPyP in extremely short acquisition times (1 s). Despite the problems with spurious bands, Raman microspectroscopy from immobilized Ag colloidal nanoparticles improves SERS sensitivity and reproducibility in comparison to macro-Raman measurements in Ag colloidal so

Název v anglickém jazyce

SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles

Popis výsledku anglicky

SERRS spectra of cationic 5,10,15,20-tetrakis(1-methyl-4-pyridyl)porphyrin (TMPyP) on Ag nanoparticles immobilized to glass via silane or by drying were measured using confocal Raman microspectrometer. The limit of detection (LOD) of TMPyP on Ag silanized glass plates was ~ 1x10-8 M, but spectra suffered from presence of spurious bands originating from carbon species mainly as a result of thermal decomposition of silane. Ag colloid/TMPyP drops dried on glass show better spectra and fewer spurious bandsfor the same TMPyP concentration compared to the silanized surfaces. Dried drops form a ring in the edge part of the drop containing high enhancing sites (big aggregates with some ''hot spots'') providing high SERRS signal of TMPyP in extremely short acquisition times (1 s). Despite the problems with spurious bands, Raman microspectroscopy from immobilized Ag colloidal nanoparticles improves SERS sensitivity and reproducibility in comparison to macro-Raman measurements in Ag colloidal so

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Molecular Structure

ISSN

0022-2860

e-ISSN

—

Svazek periodika

993

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

3

Strana od-do

425-427

Kód UT WoS článku

000291066000066

EID výsledku v databázi Scopus

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