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Atomically precise cluster-based white light emitters §
Esma Khatun, Sandeep Bose, Madhuri Jash,
Published in Springer
2018
Volume: 130
   
Issue: 10
Abstract
Abstract: Materials emitting white luminescence are receiving increasing attention due to their potential applications in electroluminescent devices, information displays and fluorescent sensors. To produce white light, one must have either three primary colors, blue, green and red or two colors, blue and orange. In this paper, we have used thiol/phosphine protected red luminescent silver nanoclusters (Ag NCs), [Ag29(BDT)12(PPh3)4]3-(BDT=1,3-benzenedithiol), [AuxAg29-x(BDT)12(PPh3)4]3- and Ag 29(LA) 12 (LA = lipoic acid) as one of the fluorophores for white light emission. These clusters are mixed with blue luminescent silicon nanoparticles (Si NPs) and green luminescent fluorescein isothiocyanate (FITC). The mixtures show white luminescence with CIE coordinates of (0.31, 0.34), (0.33, 0.35) and (0.29, 0.31) which are in good agreement with pure white light (0.33, 0.33). The other clusters with yellow, blue, orange, etc., luminescence can also be used to make white light. This work provides a prospective pathway for white light emission based on atomically precise noble metal NCs. Graphical abstract: Synopsis Monolayer protected noble metal nanoclusters such as [Ag29(BDT)12(PPh3)4]3-(BDT=1,3-benzenedithiol), [AuxAg29-x(BDT)12(PPh3)4]3- and Ag 29(LA) 12 (LA = lipoic acid) are used as red luminophores which can produce white light emission when mixed with blue luminescent silicon nanoparticles (Si NPs) and green luminescent fluorescein isothiocyanate (FITC). The mixtures produce white luminescence with CIE (Commission Internationale d’Eclair) coordinates of (0.31, 0.34), (0.33, 0.35) and (0.29, 0.31), respectively. All-cluster-based white light emission is indeed possible.[Figure not available: see fulltext.]. © 2018, Indian Academy of Sciences.
About the journal
JournalData powered by TypesetJournal of Chemical Sciences
PublisherData powered by TypesetSpringer
ISSN09743626
Open AccessNo
Concepts (22)
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    Citrus fruits
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    Display devices
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    Electrodeposition
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    Electroluminescence
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    Electrospray ionization
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    Mass spectrometry
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    Metal nanoparticles
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    Mixtures
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    Nanoclusters
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    Nanocrystalline silicon
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    Optoelectronic devices
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    Photoluminescence
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    Precious metals
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    Electrospray ionization mass spectrometry
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    Fluorescein isothiocyanate
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    Fluorescent sensors
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    Information display
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    Silicon nanoparticles
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    SILVER NANOCLUSTERS
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    THREE PRIMARY COLORS
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    White light emission
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    Light