Photophysical manifestations of interactions of quantum dots with ortho-phenanthroline molecules
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The interaction of CdSe/ZnS nanocrystals (NCs) (solubilized by trioctylphosphine oxide (TOPO) molecules) with ortho-phenanthroline (OP) molecules has been investigated. It is shown that OP molecules can replace TOPO; in this case, bonding of OP molecules with the nanocrystal surface does not lead to the formation of NC aggregates. It is established that the difference in the evolution of the spectral-luminescence NC characteristics in a mixture with OP is independent of the NC size. A model of the interaction of NCs with OP molecules is proposed.
KeywordsFluorescent Resonance Energy Transfer Trioctylphosphine Oxide Wavelength Absorption Band Spectral Luminescence Surface Trap State
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