Journal
SENSORS
Volume 9, Issue 9, Pages 7266-7286Publisher
MDPI
DOI: 10.3390/s90907266
Keywords
semiconductor quantum dots; nanoassembly; optical sensors; photoluminescence
Funding
- Fundacao para a Ciencia e a Tecnologia [SFRH/BPD/40876/2007]
- European Commission Program NANOMYC [036812]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/40876/2007] Funding Source: FCT
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Quantum dots are nanometre-scale semiconductor crystals with unique optical properties that are advantageous for the development of novel chemical sensors and biosensors. The surface chemistry of luminescent quantum dots has encouraged the development of multiple probes based on linked recognition molecules such as peptides, nucleic acids or small-molecule ligands. This review overviews the design of sensitive and selective nanoprobes, ranging from the type of target molecules to the optical transduction scheme. Representative examples of quantum dot-based optical sensors from this fast-moving field have been selected and are discussed towards the most promising directions for future research.
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