Charge transfer in CdSe nanocrystal complexes with an electroactive polymer

Megan H.J. Oh, Ming Chen, Chi Hung Chuang, Gerard J. Wilson, Clemens Burda, Mitchell A. Winnik, Gregory D. Scholes

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A better understanding of the essential interaction of semiconductor nanocrystals with their adsorbates and surrounding media can be used for controlling and optimizing the energy or charge transfer reactions found in these systems and also for comparing a diverse assortment of photoexcited charge transfer systems found in the latest materials research. In this study, the photoinduced interfacial charge transfer system, a complex of CdSe semiconductor nanocrystals and electroactive polymers containing ruthenium(II) tris(bipyridine), is characterized and then investigated in a comprehensive range of dielectric solvents from toluene to water. The effects of the solvent on the nanocrystal and adsorbate/ligand as well as the charge transfer dynamics of the system are explored through the fluorescence lifetime of the nanocrystal. Through this investigation it was found that fluorescence decays showed the presence of two decay components, which are influenced by solvent dielectric contributions on nanocrystal passivation and surface traps, and charge transfer processes present in the system. The results of the fluorescence decays were put into perspective using Marcus theory, providing some general insight on QD-based charge transfer systems and the effects of solvent polarity.

Original languageEnglish (US)
Pages (from-to)18870-18884
Number of pages15
JournalJournal of Physical Chemistry C
Volume117
Issue number37
DOIs
StatePublished - Sep 19 2013

Fingerprint

electroactive polymers
Nanocrystals
Charge transfer
nanocrystals
Polymers
charge transfer
Fluorescence
Adsorbates
fluorescence
decay
Semiconductor materials
Ruthenium
Toluene
Beam plasma interactions
Passivation
Energy transfer
ruthenium
passivity
toluene
polarity

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry

Cite this

Oh, M. H. J., Chen, M., Chuang, C. H., Wilson, G. J., Burda, C., Winnik, M. A., & Scholes, G. D. (2013). Charge transfer in CdSe nanocrystal complexes with an electroactive polymer. Journal of Physical Chemistry C, 117(37), 18870-18884. https://doi.org/10.1021/jp406196a
Oh, Megan H.J. ; Chen, Ming ; Chuang, Chi Hung ; Wilson, Gerard J. ; Burda, Clemens ; Winnik, Mitchell A. ; Scholes, Gregory D. / Charge transfer in CdSe nanocrystal complexes with an electroactive polymer. In: Journal of Physical Chemistry C. 2013 ; Vol. 117, No. 37. pp. 18870-18884.
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Oh, MHJ, Chen, M, Chuang, CH, Wilson, GJ, Burda, C, Winnik, MA & Scholes, GD 2013, 'Charge transfer in CdSe nanocrystal complexes with an electroactive polymer', Journal of Physical Chemistry C, vol. 117, no. 37, pp. 18870-18884. https://doi.org/10.1021/jp406196a

Charge transfer in CdSe nanocrystal complexes with an electroactive polymer. / Oh, Megan H.J.; Chen, Ming; Chuang, Chi Hung; Wilson, Gerard J.; Burda, Clemens; Winnik, Mitchell A.; Scholes, Gregory D.

In: Journal of Physical Chemistry C, Vol. 117, No. 37, 19.09.2013, p. 18870-18884.

Research output: Contribution to journalArticle

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Oh MHJ, Chen M, Chuang CH, Wilson GJ, Burda C, Winnik MA et al. Charge transfer in CdSe nanocrystal complexes with an electroactive polymer. Journal of Physical Chemistry C. 2013 Sep 19;117(37):18870-18884. https://doi.org/10.1021/jp406196a