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Quantum dots having molecularly imprinted nanoshell for recognition of antibiotics


Molecular imprinting of polymers (MIP) is a method to obtain highly functionalised polymers containing binding sites that are able to selectively recognize analyte molecules. In general, this method is based on co-polymerisation of functional monomers around the analyte. Consequently, a cavity formed in the polymer is complementary to the analyte not only in size and shape, but also by the electron density distribution. Thus the MIP is capable of selectively detecting the analyte in surrounding environment. Surface functionalised quantum dots can be applied in a variety of biological investigations, in which traditionally used fluorescent organic molecules fail due to lack of long-term stability and simultaneous detection of multiple signals. The ability to make QDs water soluble and target them towards specific biomolecules either by surface functionalisation or polymeric shell implementation leads to their promising applications in cellular labelling, deep-tissue imaging, immunoassay as well as efficient fluorescence resonance energy transfer donors or acceptors. The main objective of the project is the preparation of quantum dots having biocompatible MIP shell capable of selectively recognizing antibiotics. By combining high selectivity of the MIP and sensitivity of QDs with application of this hybrid material to medical research the project exhibits high inter- and multidisciplinary level as significantly relevant for nowadays sciences. The nanosensors will be characterized in terms of their long-term stability, sensitivity, selectivity, response time, and will subsequently be evaluated for analyte monitoring in biotechnology and medical research. The investigations on the new sensor materials will allow for the study of recognition reactions at the nanometer scale and foster the development of highly defined self-organizing nanostructures.

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Am Neuen Palais 10
14469 Potsdam
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 45 000
Administrative Contact
Regina Gerber (Dr.)