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    • Keywords


      Nanocluster (NC); silicon nanoparticles (Si NPs); photoluminescence (PL); fluorescein isothiocyanate (FITC); electrospray ionization mass spectrometry (ESI MS); white light emission.

    • 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 Ag29(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.

    • Author Affiliations



      1. DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600 036, India
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    • Supplementary Material

  • Journal of Chemical Sciences | News

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