title: Surface enhanced Raman scattering of new acridine based fluorophore adsorbed on silver electrode
metadata.name: dc.contributor.author
metadata.value: Solovyeva, Elena V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Myund, Liubov A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Denisova, Anna S.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-04-08T07:46:26Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-04-08T07:46:26Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2015
metadata.lang: -
metadata.name: dc.identifier.issn
metadata.value: 1386-1425
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/1972
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: 4,5-bis(N,N-di(2-hydroxyethyl)iminomethyl)acridine (BHIA) is a new acridine based fluoroionophore and a highly-selective sensor for cadmium ion. The direct interaction of the aromatic nitrogen atom with a surface is impossible since there are bulky substituents in the 4,5- positions of the acridine fragment. Nevertheless BHIA molecule shows a reliable SERS spectrum while adsorbed on a silver electrode. The analysis of SERS spectra pH dependence reveals that BHIA species adsorbed on a surface can exist in both nonprotonated and protonated forms. The adsorption of BHIA from alkaline solution is accompanied by carbonaceous species formation at the surface. The intensity of such “carbon bands” turned out to be related with the supporting electrolyte (KCl) concentration. Upon lowering the electrode potential the SERS spectra of BHIA do not undergo changes but the intensity of bands decreases. This indicates that the adsorption mechanism on the silver surface is realized via aromatic system of acridine fragment. In case of such an adsorption mechanism the chelate fragment of the BHIA molecule is capable of interaction with the solution components. Addition of Cd2+ ions to a system containing BHIA adsorbed on a silver electrode in equilibrium with the solution leads to the formation of BHIA/Cd2+ complex which desorption causes the loss of SERS signal.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: Elsevier
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy;149
metadata.lang: -
metadata.name: dc.subject
metadata.value: Surface-enhanced Raman spectroscopy
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: fluorophore
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: acridine derivatives
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: adsorption
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Surface enhanced Raman scattering of new acridine based fluorophore adsorbed on silver electrode
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Solovyeva_Spectrochim_acta_paper.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/1972/1/Solovyeva_Spectrochim_acta_paper.pdf
resources.format: Adobe PDF
resources.size: 675,68 kB