The interface between the crystalline semiconductor core and the ligand shell of colloidal quantum dots (QDs) often dominates the ultrafast excited state dynamics of the complex. This interface comprises a series of coordination complexes with a structure controllable by the concentration of anionic surfactant in the reaction mixture for the QDs.  This talk will explore the relationship between the surface chemistry of colloidal QDs and the competition between excited state relaxation processes, including, surface trapping, fluorescence and interfacial charge transfer.

Exciton relaxation and dissociation in quantum dot-organic complexes

247th National Meeting (2014)

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