Probing Biocatalytic Transformations with CdSe-ZnS QDs

摘要

The unique size-controlled photonic properties of semiconductor quantum dots (QDs) find increasing interest for sensing and biosensing.Numerous studies have employed QDs as fluorescent labels for biorecognition events,such as the formation of immuno-complexes or nucleic acid-DNA duplexes.The use of semiconductor QDs as reporter units for biocatalytic processes is,however,scarce,and only few examples demonstrated the application of the photophysical properties of semiconductor QDs to probe biocatalytic reactions.CdS QDs were coupled with biocatalysts,and the resulting photocurrent was employed to follow the enzyme activity.