Enhanced absorption and fluorescence of gold nanoclusters using initial alkali concentrations

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

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号022001
ジャーナルApplied Physics Express
9
2
DOI
出版ステータス出版済み - 2 2016
外部発表はい

All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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