About: SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1016/j.molstruc.2010.12.037
Description	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 bands for 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 solution. 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 bands for 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 solution. (en)
Title	SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles (en)
skos:prefLabel	SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles (en)
skos:notation	RIV/00216208:11320/11:10080560!RIV12-MSM-11320___
http://linked.open...avai/riv/aktivita	S Z
http://linked.open...avai/riv/aktivity	S, Z(MSM0021620835)
http://linked.open...iv/cisloPeriodika	1-3
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Procházka, Marek Šimáková, Petra
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	228967
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/11:10080560
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Raman microspectroscopy; Ag immobilized nanoparticles; porphyrin; SERS (en)
http://linked.open.../riv/klicoveSlovo	Raman microspectroscopy SERS porphyrin Ag immobilized nanoparticles
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[662D6C8B2D71]
http://linked.open...i/riv/nazevZdroje	Journal of Molecular Structure
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	993
http://linked.open...iv/tvurceVysledku	Procházka, Marek Šimáková, Petra
http://linked.open...ain/vavai/riv/wos	000291066000066
http://linked.open...n/vavai/riv/zamer	Fyzika molekulárních, makromolekulárních a biologických systémů
issn	0022-2860
number of pages	3 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.molstruc.2010.12.037
http://localhost/t...ganizacniJednotka	11320

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