2014
DOI: 10.1021/am5071078
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Color-Switchable, Emission-Enhanced Fluorescence Realized by Engineering C-dot@C-dot Nanoparticles

Abstract: This paper reports the preparation and properties of color-switchable fluorescent carbon nanodots (C-dots). C-dots that emit dark turquoise and green-yellow fluorescence under 365 nm UV illumination were obtained from the hydrothermal decomposition of citric acid. Dark green fluorescent C-dots were obtained by conjugating prepared C-dots to form C-dot@C-dot nanoparticles. After successful conjugation of the C-dots, the fluorescence emission undergoes a blue-shift of nearly 20 nm (∼0.15 eV) under UV excitation … Show more

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Cited by 63 publications
(31 citation statements)
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“…The structural stability of this spinel phase enables the LLS material to possess outstanding performance without severe structure degradation . In other cases, reduction of lithium rich cathode materials has been shown to result in the partial formation of an artificial spinel phase on the surface that provides both lithium and electron conductivity . Figure 7 shows an example of the use of ALD to deposit a layer of AlPO 4 onto Li‐rich NMC (HENMC), it was found that the surface Mn and Co underwent reduction reaction upon reaction with the trimethyl aluminum precursor, which was responsible for the formation of a spinel phase on the surface.…”
Section: Roles Of Surface Modificationsmentioning
confidence: 99%
“…The structural stability of this spinel phase enables the LLS material to possess outstanding performance without severe structure degradation . In other cases, reduction of lithium rich cathode materials has been shown to result in the partial formation of an artificial spinel phase on the surface that provides both lithium and electron conductivity . Figure 7 shows an example of the use of ALD to deposit a layer of AlPO 4 onto Li‐rich NMC (HENMC), it was found that the surface Mn and Co underwent reduction reaction upon reaction with the trimethyl aluminum precursor, which was responsible for the formation of a spinel phase on the surface.…”
Section: Roles Of Surface Modificationsmentioning
confidence: 99%
“…15 It has been widely accepted that CDs possess unique optical, electrochemical, biocompatibility and photoluminescence properties. 16,17 In addition, CDs have high stability, low toxicity, good water solubility and are environmentally friendly. 18 Due to these attractive properties, CDs have drawn scientists' attentions for use as a novel carbon nanostructure for bioimaging, biosensors, drug delivery and gene delivery.…”
Section: Introductionmentioning
confidence: 99%
“…The typical absorption band at 245 nm is ascribed to π−π* transition of conjugated system. 46 And the absorption band at 350 nm is attributed to n-π* transition, 47 which is caused by surface carboxyl amino or other moieties that passivate the surface traps. In addition, the strong absorption peaks at 210 nm is assigned to the preservation of cysteine or the effect of carbon skeleton compared to the UVvis absorption of pure cysteine and carbon skeleton respective.…”
Section: Characterizationmentioning
confidence: 99%