quantum dots and their interaction with dna maja stanisavljević mendel university department of...
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Quantum dots and their interaction with DNA
Maja Stanisavljević
Mendel University
Department of chemistry and biochemistry
Quantum dots – history of synthesis
1980 – Ekimov, Efros – first description
of quantum dots 1993 Murray, Norris, Bawendi CdE(E=S,SeTe) and other improvments like ZnS shellSemiconductor nanocrystals
synthetised from II and VI or III and V elements of PSE. today-enviromental-friendly
synthesis
CdTe
Characteristics
small size 1-10nm absorbtion of light in wide
range emmision range very narrow photostabillity and resistance to chemical degradation poisonous core and
hydrophobic surface modification bioconjugation
DNA
1869 – isolated by Swiss scientist
Friedrich Miescher 1953 – described DNA
structure Watson and Crick 1962 – they recieved Nobel
prize for solving nature’s biggest secret
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