Enhanced absorption and fluorescence of gold nanoclusters using initial alkali concentrations

Trong Nghia Nguyen, Thi Hue Do, Dinh Hoang Nguyen, Vu Duong, Quang Hoa Do, Hong Nhung Tran, Thi Ha Lien Nghiem

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Understanding carrier dynamics and electromagnetic interactions between emerging quantum-confined nanostructures and plasmonic structures is crucial for future biological applications. In this research, we fabricate gold monolayer-protected clusters (AuMPC). We demonstrate enhanced light absorption and fluorescence of AuMPCs by varying the initial alkali concentration. We measure absorption bands enhanced up to nine times with extended and distinct features centered at 3.33 eV, and fluorescence enhanced up to 3.9 times. An increased alkali concentration changes the charge transfer capability of the surface thiolate ligands through sulfur-gold bonds, which in turn enhance/reduce the fluorescence intensity.

Original languageEnglish
Article number022001
JournalApplied Physics Express
Volume9
Issue number2
DOIs
Publication statusPublished - Feb 1 2016

Fingerprint

Nanoclusters
nanoclusters
alkalies
Gold
Fluorescence
gold
fluorescence
electromagnetic interactions
electromagnetic absorption
Light absorption
Charge transfer
Absorption spectra
emerging
Monolayers
Nanostructures
sulfur
Sulfur
Ligands
charge transfer
absorption spectra

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Nguyen, T. N., Do, T. H., Nguyen, D. H., Duong, V., Do, Q. H., Tran, H. N., & Nghiem, T. H. L. (2016). Enhanced absorption and fluorescence of gold nanoclusters using initial alkali concentrations. Applied Physics Express, 9(2), [022001]. https://doi.org/10.7567/APEX.9.022001

Enhanced absorption and fluorescence of gold nanoclusters using initial alkali concentrations. / Nguyen, Trong Nghia; Do, Thi Hue; Nguyen, Dinh Hoang; Duong, Vu; Do, Quang Hoa; Tran, Hong Nhung; Nghiem, Thi Ha Lien.

In: Applied Physics Express, Vol. 9, No. 2, 022001, 01.02.2016.

Research output: Contribution to journalArticle

Nguyen, TN, Do, TH, Nguyen, DH, Duong, V, Do, QH, Tran, HN & Nghiem, THL 2016, 'Enhanced absorption and fluorescence of gold nanoclusters using initial alkali concentrations', Applied Physics Express, vol. 9, no. 2, 022001. https://doi.org/10.7567/APEX.9.022001
Nguyen, Trong Nghia ; Do, Thi Hue ; Nguyen, Dinh Hoang ; Duong, Vu ; Do, Quang Hoa ; Tran, Hong Nhung ; Nghiem, Thi Ha Lien. / Enhanced absorption and fluorescence of gold nanoclusters using initial alkali concentrations. In: Applied Physics Express. 2016 ; Vol. 9, No. 2.
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