Variations in electronic states of coumarin hexanethiolate-labeled i-Au25 and bi-Au25 clusters

Article

Abstract

Icosahedron and [Au25(PPh)10(C6H14S)5Cl2]2+ bi-icosahedron clusters were synthesized. Ligand exchange reactions were carried out with a new coumarin-derived fluorophore (Cou-SH) to label both clusters. Labeled and unlabeled Au25 were compared and the changes in the electronic structure were determined. The labeled clusters showed marked changes in electronic states, as evidenced by the quenching in the UV region and enhancement in the near infrared. The quantum yield from Cou-SH decreased and the quantum yield from the labeled Au25 increased. Second, the authors observed changes in the electrochemical band gap.

Attributes

Attribute NameValues
Creator
  • Angela Meola

  • Nicole Hondroglannis

  • Pierce Brown

  • Maksym Zhukovskyi

  • Zheng Zheng

  • Zeev Rosenzweig

  • Mary Sajini Devadas

Journal or Work Title
  • MRS Communications

Volume
  • 9

Issue
  • 3

First Page
  • 992

Last Page
  • 1000

ISSN
  • 21596867

Publication Date
  • 2019-08

Subject
  • Titan TEM

  • JEOL 2011

Publisher
  • Cambridge University Press

Date Created
  • 2020-01-08

Language
  • English

Departments and Units
Record Visibility and Access Public
Content License
  • All rights reserved

Digital Object Identifier

doi:10.1557/mrc.2019.113

This DOI is the best way to cite this article.