Light-Harvesting Nanoparticle Core-Shell Clusters with Controllable Optical Output

Dazhi Sun, Ye Tian, Yugang Zhang, Zhihua Xu, Matthew Y. Sfeir, Mircea Cotlet, Oleg Gang

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We used DNA self-assembly methods to fabricate a series of core-shell gold nanoparticle-DNA-colloidal quantum dot (AuNP-DNA-Qdot) nanoclusters with satellite-like architecture to modulate optical (photoluminescence) response. By varying the intercomponent distance through the DNA linker length designs, we demonstrate precise tuning of the plasmon-exciton interaction and the optical behavior of the nanoclusters from regimes characterized by photoluminescence quenching to photoluminescence enhancement. The combination of detailed X-ray scattering probing with photoluminescence intensity and lifetime studies revealed the relation between the cluster structure and its optical output. Compared to conventional light-harvesting systems like conjugated polymers and multichromophoric dendrimers, the proposed nanoclusters bring enhanced flexibility in controlling the optical behavior toward a desired application, and they can be regarded as controllable optical switches via the optically pumped color.

Original languageEnglish (US)
Pages (from-to)5657-5665
Number of pages9
JournalACS Nano
Volume9
Issue number6
DOIs
StatePublished - Jun 23 2015

Fingerprint

Nanoclusters
Photoluminescence
DNA
deoxyribonucleic acid
nanoclusters
Nanoparticles
photoluminescence
nanoparticles
output
Dendrimers
Optical switches
Conjugated polymers
dendrimers
X ray scattering
Excitons
Gold
Self assembly
Semiconductor quantum dots
self assembly
Quenching

Keywords

  • DNA
  • cluster
  • fluorescence
  • nanoparticle
  • quantum dots
  • self-assembly

Cite this

Sun, D., Tian, Y., Zhang, Y., Xu, Z., Sfeir, M. Y., Cotlet, M., & Gang, O. (2015). Light-Harvesting Nanoparticle Core-Shell Clusters with Controllable Optical Output. ACS Nano, 9(6), 5657-5665. https://doi.org/10.1021/nn507331z

Light-Harvesting Nanoparticle Core-Shell Clusters with Controllable Optical Output. / Sun, Dazhi; Tian, Ye; Zhang, Yugang; Xu, Zhihua; Sfeir, Matthew Y.; Cotlet, Mircea; Gang, Oleg.

In: ACS Nano, Vol. 9, No. 6, 23.06.2015, p. 5657-5665.

Research output: Contribution to journalArticle

Sun, D, Tian, Y, Zhang, Y, Xu, Z, Sfeir, MY, Cotlet, M & Gang, O 2015, 'Light-Harvesting Nanoparticle Core-Shell Clusters with Controllable Optical Output' ACS Nano, vol. 9, no. 6, pp. 5657-5665. https://doi.org/10.1021/nn507331z
Sun, Dazhi ; Tian, Ye ; Zhang, Yugang ; Xu, Zhihua ; Sfeir, Matthew Y. ; Cotlet, Mircea ; Gang, Oleg. / Light-Harvesting Nanoparticle Core-Shell Clusters with Controllable Optical Output. In: ACS Nano. 2015 ; Vol. 9, No. 6. pp. 5657-5665.
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