SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
SERRS microspectroscopy of porphyrins on Ag immobilized nanoparticles
Original language 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 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
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BO - Biophysics
OECD FORD branch
—

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

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)