Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield

Giada Soldan; Maha A. Aljuhani; Megalamane S. Bootharaju; Lina G. Abdulhalim; Manas R. Parida; Abdul Hamid Emwas; Omar F. Mohammed; Osman M. Bakr

doi:10.1002/anie.201600267

Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield

Giada Soldan
, Maha A. Aljuhani
, Megalamane S. Bootharaju
, Lina G. Abdulhalim
, Manas R. Parida
, Abdul Hamid Emwas
, Omar F. Mohammed^*
, Osman M. Bakr

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

336 Scopus citations

Abstract

A high quantum yield (QY) of photoluminescence (PL) in nanomaterials is necessary for a wide range of applications. Unfortunately, the weak PL and moderate stability of atomically precise silver nanoclusters (NCs) suppress their utility. Herein, we accomplished a ≥26-fold PL QY enhancement of the Ag₂₉(BDT)₁₂(TPP)₄ cluster (BDT: 1,3-benzenedithiol; TPP: triphenylphosphine) by doping with a discrete number of Au atoms, producing Ag_29-xAu_x(BDT)₁₂(TPP)₄, x=1-5. The Au-doped clusters exhibit an enhanced stability and an intense red emission around 660 nm. Single-crystal XRD, mass spectrometry, optical, and NMR spectroscopy shed light on the PL enhancement mechanism and the probable locations of the Au dopants within the cluster.

Original language	English
Pages (from-to)	5749-5753
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	55
Issue number	19
DOIs	https://doi.org/10.1002/anie.201600267
State	Published - 4 May 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

coordination modes
nanoalloys
nanoclusters
photoluminescence
supramolecular chemistry

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1002/anie.201600267

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@article{5953cc3abf7c4b6d9bd228770772e420,

title = "Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield",

abstract = "A high quantum yield (QY) of photoluminescence (PL) in nanomaterials is necessary for a wide range of applications. Unfortunately, the weak PL and moderate stability of atomically precise silver nanoclusters (NCs) suppress their utility. Herein, we accomplished a ≥26-fold PL QY enhancement of the Ag29(BDT)12(TPP)4 cluster (BDT: 1,3-benzenedithiol; TPP: triphenylphosphine) by doping with a discrete number of Au atoms, producing Ag29-xAux(BDT)12(TPP)4, x=1-5. The Au-doped clusters exhibit an enhanced stability and an intense red emission around 660 nm. Single-crystal XRD, mass spectrometry, optical, and NMR spectroscopy shed light on the PL enhancement mechanism and the probable locations of the Au dopants within the cluster.",

keywords = "coordination modes, nanoalloys, nanoclusters, photoluminescence, supramolecular chemistry",

author = "Giada Soldan and Aljuhani, \{Maha A.\} and Bootharaju, \{Megalamane S.\} and Abdulhalim, \{Lina G.\} and Parida, \{Manas R.\} and Emwas, \{Abdul Hamid\} and Mohammed, \{Omar F.\} and Bakr, \{Osman M.\}",

note = "Publisher Copyright: {\textcopyright} 2016 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2016",

month = may,

day = "4",

doi = "10.1002/anie.201600267",

language = "English",

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journal = "Angewandte Chemie - International Edition",

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T1 - Gold Doping of Silver Nanoclusters

T2 - A 26-Fold Enhancement in the Luminescence Quantum Yield

AU - Soldan, Giada

AU - Aljuhani, Maha A.

AU - Bootharaju, Megalamane S.

AU - Abdulhalim, Lina G.

AU - Parida, Manas R.

AU - Emwas, Abdul Hamid

AU - Mohammed, Omar F.

AU - Bakr, Osman M.

PY - 2016/5/4

Y1 - 2016/5/4

N2 - A high quantum yield (QY) of photoluminescence (PL) in nanomaterials is necessary for a wide range of applications. Unfortunately, the weak PL and moderate stability of atomically precise silver nanoclusters (NCs) suppress their utility. Herein, we accomplished a ≥26-fold PL QY enhancement of the Ag29(BDT)12(TPP)4 cluster (BDT: 1,3-benzenedithiol; TPP: triphenylphosphine) by doping with a discrete number of Au atoms, producing Ag29-xAux(BDT)12(TPP)4, x=1-5. The Au-doped clusters exhibit an enhanced stability and an intense red emission around 660 nm. Single-crystal XRD, mass spectrometry, optical, and NMR spectroscopy shed light on the PL enhancement mechanism and the probable locations of the Au dopants within the cluster.

AB - A high quantum yield (QY) of photoluminescence (PL) in nanomaterials is necessary for a wide range of applications. Unfortunately, the weak PL and moderate stability of atomically precise silver nanoclusters (NCs) suppress their utility. Herein, we accomplished a ≥26-fold PL QY enhancement of the Ag29(BDT)12(TPP)4 cluster (BDT: 1,3-benzenedithiol; TPP: triphenylphosphine) by doping with a discrete number of Au atoms, producing Ag29-xAux(BDT)12(TPP)4, x=1-5. The Au-doped clusters exhibit an enhanced stability and an intense red emission around 660 nm. Single-crystal XRD, mass spectrometry, optical, and NMR spectroscopy shed light on the PL enhancement mechanism and the probable locations of the Au dopants within the cluster.

KW - coordination modes

KW - nanoalloys

KW - nanoclusters

KW - photoluminescence

KW - supramolecular chemistry

UR - https://www.scopus.com/pages/publications/84979723161

U2 - 10.1002/anie.201600267

DO - 10.1002/anie.201600267

M3 - Article

AN - SCOPUS:84979723161

SN - 1433-7851

VL - 55

SP - 5749

EP - 5753

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 19

ER -

Gold Doping of Silver Nanoclusters: A 26-Fold Enhancement in the Luminescence Quantum Yield

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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