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Influence of sandwich-type DNA construction strategy and plasmonic metal on signal generated by SERS DNA sensors

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dc.abstract.enThe DNA biosensors are powerful tools in the gene mutation or pathogens detection. That is why there are a lot of DNA detection strategies and methods. Here we present the insight on a slightly overlooked DNA detection technique, surface-enhanced Raman scattering (SERS). The present work is a summary of the influence of the plasmonic metal of the SERS substrate and strategy of the sandwich-type biosensor construction, simply the placement of the Raman reporter and mismatches, on the SERS signal enhancement. We found that, although in general there is an increase in the intensity of the SERS signal when the distance between the Raman scatterer and the SERS-active surface decreases, for this type of DNA SERS sensor a greater intensity of the measured Raman signal is usually observed when the Raman reporter is farther away from the plasmonic substrate. This is probably caused by a significant change in the hybridisation efficiency for the different structures of the sensor analysed due to some steric hindrances.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKudelski, Andrzej
dc.contributor.authorNowicka, Anna
dc.contributor.authorKowalczyk, Agata
dc.contributor.authorWeyher, Jan L.
dc.contributor.authorPyrak, Edyta
dc.date.accessioned2024-01-25T04:13:59Z
dc.date.available2024-01-25T04:13:59Z
dc.date.issued2023
dc.description.accesstimeAT_PUBLICATION
dc.description.financeNie dotyczy
dc.description.versionFINAL_PUBLISHED
dc.description.volume295
dc.identifier.doi10.1016/J.SAA.2023.122606
dc.identifier.issn1386-1425
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/109265
dc.identifier.weblinkhttps://api.elsevier.com/content/article/PII:S1386142523002913?httpAccept=text/xml
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
dc.relation.pages122606
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleInfluence of sandwich-type DNA construction strategy and plasmonic metal on signal generated by SERS DNA sensors
dc.typeJournalArticle
dspace.entity.typePublication