Scale‐Up Synthesis of Fragrant Nitrogen‐Doped Carbon Dots from Bee Pollens for Bioimaging and Catalysis

Abstract

Fragrant nitrogen‐doped carbon dots of gram scale can be prepared from commercial bee pollens by a hydrothermal process. These carbon dots of 1–2 nm in size show promising applications in cellular imaging and catalysis/photocatalysis.

A selective sensor for cyanide ion (CN−) based on the inner filter effect of metal nanoparticles with photoluminescent carbon dots as the fluorophore

“…However, it is still challenging to prepare carbon dots from biomass in a quite reproducible manner. Very recently, we proposed to prepare photoluminescent carbon dots from one-pot hydrothermal treatment of bee pollen in a highly reproducible way [8]. Apart from synthesis, the carbon dots are used for sensing of metal ions [9], optical bioimaging [10], photocatalysis [11], and photo-induced electron transfer (PET) [12].…”

“…Previous study showed that the fluorescence of the carbon dots barely changed in the presence of a variety of metal ions and anions [8]. Utilizing Au or Ag nanoparticle (NP) as the light absorber and carbon dots as the fluorophore, we then fabricated a turn-on fluorescent sensor for cyanide on the basis of inner filter effect (IFE) of metal nanoparticles [29].…”

Fluorescently tuned nitrogen-doped carbon dots from carbon source with different content of carboxyl groups

“…Most probably, more carboxyl groups conjugate more amino groups on NCDs' surface, which leads to higher FLQY. [33][34][35][36] The UV-Vis absorption spectra are shown in Fig. 5(b).…”

A novel electrochemiluminescence sensor for the detection of nitroaniline based on the nitrogen-doped graphene quantum dots

“…Therefore, N-GQDs were capped on electrode surface with chitosan in this study. Using N-GQDs as luminescence label and catalyzer Zhang et al, 2014Zhang et al, , 2015aZhang et al, , 2015bShen et al, 2012;Valizadeh et al, 2015), an ECL enhancement sensing system was designed (Scheme 1). In the sensing system, N-GQDs were capped on electrode surface with chitosan.…”

“…Recently, luminescent methods have been combined with electrochemical techniques to expand GQDsbased sensing applications (Liu et al, 2014;Wu et al, 2015). And researchers have established kinds of N-GQDs-based ECL sensors which were successfully used to detect small molecules, organic compounds, protein, and so on (Zhang et al, 2015a(Zhang et al, , 2015bZhou et al, 2015;Du et al, 2015;Wang et al, 2015aWang et al, , 2015b.…”