Journal Article

PUBDB-2024-01806

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Golden Plasmophores with Tunable Photoluminescence and Outstanding Thermal and Photothermal Stability

Gharib, M. ; Yates, A. J. ; Sanders, S. ; Gebauer, J. ; Graf, S. ; Ziefuß, A. R. ; Nonappa ; Kassier, G.CFEL*DESY* ; Rehbock, C. ; Barcikowski, S. ; Weller, H. ; Alabastri, A. ; Nordlander, P. (Corresponding author)Extern*XFEL.EU* ; Parak, W. (Corresponding author)Extern* ; Chakraborty, I. (Corresponding author)Extern*

2024
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/adom.202302833  doi:10.3204/PUBDB-2024-01806

Abstract: Among various hybrid nanomaterials, the combination of plasmonic nanoparticles and fluorophores in a single multifunctional nanoplatform, so-called plasmophores, has attracted significant attention in different fields such as dark field, fluorescence, and photoacoustic imaging, biosensing, photothermal, and photodynamic therapy. Herein, author report a facile and controlled synthesis route of hybrid nanoplatforms composed of fluorescent gold nanoclusters (GNCs) coupled to plasmonic gold nanorods (GNRs) using controlled silica (SiO$_2$) dielectric spacers of different thicknesses from now on referred to as GNR@SiO$_2$@GNC plasmophores. The results show different degrees of plasmon-enhanced fluorescence of the GNCs in their plasmophore hybrid system when placed at different distances from the plasmonic cores of the GNRs. On the other hand, these plasmophores show enhanced thermal stability compared to GNRs@CTAB (CTAB, cetyl trimethyl ammonium bromide). This results also demonstrated that upon annealing at elevated temperatures (800–1000 °C), the GNRs in the plasmophores are more thermally stable and robust than the GNRs@CTAB. More surprisingly, despite the commonly reported very low melting temperature of smaller-size nanocrystals, the GNCs in the plasmophores showed high thermal stability and do not exhibit significant structural changes at elevated temperatures (800–1000 °C).

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Contributing Institute(s):

1. Forschungsgruppe für strukturelle Dynamik (MPSD)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. DFG project G:(GEPRIS)320907882 - Der Übergang zwischen Plasmonresonanz und Photolumineszenz ist in Münzmetall- (und deren Legierungen) Nanoclustern durch Oberflächenladung, Clusterzusammensetzung und Typ der Oberflächenliganden bestimmt (320907882) (320907882)
3. AIM, DFG project G:(GEPRIS)390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)

Experiment(s):

1. No specific instrument

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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