beta-methylumbelliferone Surface Modification and Permeability Investigations at PENTEL (TM) Graphite Electrodes

Warren Susan; Seddon Brian; Pilkington RuthCrossely AlisonHoldway PhilipDempsey Eithne

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beta-methylumbelliferone Surface Modification and Permeability Investigations at PENTEL (TM) Graphite Electrodes

机译：beta-methylumbelliferone Surface Modification and Permeability Investigations at PENTEL (TM) Graphite Electrodes

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Electrochemical and micro-imaging analysis of a commercial graphite-composite material is presented following electro-oxidation with beta-methylumbelliferone. Charge-transfer surface modification was observed for the graphite electrode, presumed to have arisen from adsorbed interfacial umbelliferone moieties. The molecular permeability of the new surface towards a range of similar, yet size-variable (23 angstrom(3)-136 angstrom(3)) molecular redox probes is discussed. Red-shift fluorescence in confocal microscopy offers further support for the presence of a surface-bound umbelliferone layer. An SEM-platinum profiling technique was used as an imaging tool to map the umbelliferone surface and size-distribution of electro-active sites.

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来源
《Electroanalysis》 |2020年第5期|1034-1042|共9页
作者
Warren Susan; Seddon Brian; Pilkington RuthCrossely AlisonHoldway PhilipDempsey Eithne;
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作者单位

Technlol Univ Dublin, CASH, Microsensors Clin Res & Anal MiCRA Biodiagnost, Tallaght Campus, Dublin 24, Ireland;

Technlol Univ Dublin, CMHI, Tallaght Campus, Dublin 24, Ireland;

Univ Oxford, Dept Mat, Oxford, Oxon, EnglandMaynooth Univ, Dept Chem, Maynooth, Kildare, IrelandTechnlol Univ Dublin, Ctr Res Electroanalyt Tech CRE ATE, Ctr Appl Sci Hlth, Tallaght Campus, Dublin 24, Ireland;

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原文格式 PDF
正文语种英语
中图分类电化学、电解、磁化学;
关键词
beta-methyl-umbelliferone; graphite pencil electrode; selective polymer layer;

beta-methylumbelliferone Surface Modification and Permeability Investigations at PENTEL (TM) Graphite Electrodes

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