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In-situ Raman spectroelectrochemical studies on thionine layer electrochemically grafted to the gold surface
- Source :
- Electrochimica Acta. 245:902-911
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- The work describes the in-situ Raman spectroelectrochemical studies on thionine layer covalently bound to the gold surface (Th/Au). The thionine layer was deposited on Au substrate via electrochemical reduction of corresponding diazonium salt. Due to the presence of system of conjugated bonds in the film’s structure, grafted thionine reveals electrochemical response analogical to unbound thionine. It is shown that bound Th can undergo irreversible oxidation leading to the formation of surface-bound radical cation and thus thionine dimers, as supported by cyclic voltammetry and Raman spectroelectrochemistry studies.
- Subjects :
- General Chemical Engineering
Inorganic chemistry
02 engineering and technology
Conjugated system
010402 general chemistry
021001 nanoscience & nanotechnology
Photochemistry
Electrochemistry
01 natural sciences
Thionine
0104 chemical sciences
chemistry.chemical_compound
symbols.namesake
chemistry
Radical ion
Covalent bond
symbols
Cyclic voltammetry
0210 nano-technology
Raman spectroscopy
Layer (electronics)
Subjects
Details
- ISSN :
- 00134686
- Volume :
- 245
- Database :
- OpenAIRE
- Journal :
- Electrochimica Acta
- Accession number :
- edsair.doi...........48926932b3537174b84c74568565ff17