Radiative and nonradiative rate fluctuations of single colloidal semiconductor nanocrystals

Article Abstract:

The fluctuations of the photophysical characteristics of difference types of semiconductor nanocrystals (NCs) are investigated using spectral and time-resolved single-molecule fluorescence spectroscopy. The results show that the addition of antiblinking reagents such as mercaptoethylamine accelerates the observed fluctuations between different photophysical states.

Analysis, Optical properties, Photoluminescence, Fluorescence spectroscopy, Structure, Nanoparticles, Mercaptoethanol

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Photoinduced electron transfer between fluorescent dyes and guanosine residues in DNA-hairpins

Article Abstract:

The inter- and intramolecular quenching efficiency of DNA nucleotides with rhodamine and oxazine derivatives in aqueous solution is studied. The results show that similar to the aggregation tendency of organic dyes, oxazine and rhodamine dyes tend to aggregate with DNA nucleotides in aqueous surroundings.

Science & research, Research, Methods, Electron transport, Chemical properties, DNA microarrays, Guanosine

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