Electroanalysis · 2017 · 27 citations · 42 references
Natural SciencesChemistryMaterials ScienceElectrochemistryMaterials ChemistryNanomaterialsCarbon NanomaterialsElectrochemical CellsElectrode MaterialsGraphene NanomaterialsOrganic Electronic MaterialsQuantum DotsAnalytical Detection LimitsCarbon ElectrodesElectrochemical FunctionalizationGlassy Carbon ElectrodesGraphene ElectrodesGraphene Quantum Dotsπ Interactionsπ-π Interactions
Abstract We report on the π–π interactions between graphene quantum dots (GQDs) and the following cobalt phthalocyanine derivatives: cobalt monocarboxyphenoxy phthalocyanine (complex 1 ), cobalt tetracarboxyphenoxyphthalocyanine (complex 2 ), and cobalt tetraaminophenoxy phthalocyanine (complex 3 ). The conjugates (conj) with GQDs are represented as 1 @GQDs(conj), 2 @GQDs(conj) and 3 @GQDs(conj), respectively. The resulting phthalocyanine/GQDs conjugates were adsorbed on containing a glassy carbon electrode (GCE) using the drop and dry method. We explore the electrochemical properties of phthalocyanines functionalized with both electron withdrawing groups and electron donating groups when non‐covalently linked to the π‐electron rich graphene quantum dots. GCE/ 3, GCE/ 2 @GQDs(conj) and GCE/ 1 @GQDs(conj) had the lowest limits of detection (LOD). Sequentially modified electrodes showed less favourable detection limits compared to the conjugates.
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Water‐Soluble Fluorescent Carbon Quantum Dots and Photocatalyst Design
Haitao Li, Xiaodie He, Zhenhui Kang et al. · Angewandte Chemie International Edition · 2010 · 2.6K citations