title: Determination of amines based on their interaction with QDs: effect of the formation QD-assemblies.
abstract: Assemblies of closed nanoparticles have focused interest because they exhibit new optical and chemical properties. The use of a 1D covalent strategy for quantum dots-assemblies has been proposed in this work as novelty. It was studied the effect of use different dithiols, including aromatic and aliphatic dithiol compounds, on the formation of QDs-assemblies in order to establish the influence of the linker's structure on the geometry of the assemblies, and hence on their properties. As a second part of the work, the changes on analytical response to analytes thanks to the formation of QDs-assemblies when dithiols are added were studied for firs time. For this study, some biogenic amines were selected as target analytes. We observed an improvement of 2.7-4 times in the sensitivity, expressed as slope of the calibration graph, when the dithiols were added to the system obtaining QDs-assemblies.
authors: Department of Analytical Chemistry, University of Córdoba, E-14071 Córdoba, Spain.
authors: Carolina
authors: C
authors: Carrillo-Carrión
authors: Bartolomé M
authors: BM
authors: Simonet
authors: Miguel
authors: M
authors: Valcárcel