Energetic disorder limits energy transfer in semiconductor nanocrystal-DNA-dye conjugates

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number143101
Journal / PublicationApplied Physics Letters
Volume95
Issue number14
Publication statusPublished - 2009
Externally publishedYes

Abstract

We demonstrate the influence of spectral linewidths of individual donor-acceptor couples on energy transfer efficiency in semiconductor nanocrystal-DNA-organic dye conjugates. Temperature-dependent single molecule and ensemble spectroscopy data are analyzed using the Förster theory within the macroscopic and microscopic approaches. The results obtained evidence on the importance of the spectral overlap between emission of a single donor and absorption of a single acceptor in its close vicinity, which determines the microscopic resonance and transfer efficiency between individual neighbors. This realization poses important implications on the applicability of ensemble spectral overlap for the analysis of distance dependencies of nanoscopic objects. © 2009 American Institute of Physics.

Citation Format(s)

Energetic disorder limits energy transfer in semiconductor nanocrystal-DNA-dye conjugates. / Becker, Klaus; Rogach, Andrey L.; Feldmann, Jochen et al.
In: Applied Physics Letters, Vol. 95, No. 14, 143101, 2009.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review