One-pot microwave-assisted in situ reduction of Ag⁺and Au³⁺ions by Citrus limon extract and their carbon-dots based nanohybrids: a potential nano-bioprobe for cancer cellular imaging

Abstract

In situreduction and microwave-assisted synthesis of Ag/C-dot and Au/C-dot nanohybrids using natural lemon extract for cancer cellular imaging applications.

Förster resonance energy transfer (FRET) paired carbon dot-based complex nanoprobes: versatile platforms for sensing and imaging applications

“…Au and Ag nanoparticles (AuNPs and AgNPs) can also be used as efficient acceptors for most fluorescent groups due to their high extinction coefficients and absorption bandwidths. Therefore, AuNPs [89][90][91][92][93][94][95] and AgNPs [96][97][98][99][100] are ideal nano-quenching agents to establish FRET-based nanoprobes due to their large extinction coefficients and wide absorption spectra, which overlap with the fluorescent emission of CDots.…”

Electron/energy co-transfer behavior and reducibility of Cu-chlorophyllin-bonded carbon-dots

“…The PL decay (exciton lifetime) time of the CCPh and CCPh-CD1 were exactly singleexponentially tted to be 3.20 ns and 12.64 ns, respectively. The exciton lifetime of the CCPh is similar to that of the C-dot precursor, reported as 3.6 ns, 43 which is assigned to the radiative recombination of electron transfer within one C-dot. Whereas, the longer exciton lifetime of the CCPh-CD1 should be resulted from the electron transfer between the linked CCPh and C-dot.…”

Microwave-assisted preparation of a silver nanoparticles/N-doped carbon dots nanocomposite and its application for catalytic reduction of rhodamine B, methyl red and 4-nitrophenol dyes

“…Additionally, a new peak at 1745 cm À1 appeared in AgNPs/NCDs spectrum, which corresponds to symmetrical stretching of carboxylate groups. 39,41,44,45 From the FTIR spectrum, we can conclude that NCDs have abundant -NH 2 , carbonyl and -OH functional groups on the surface that acted as electron donors for the reduction of Ag + to elemental Ag 0 . 46,47 The crystalline structure of the synthesized AgNPs/NCDs nanocomposite was identied through XRD analysis.…”

“…48 Zeta potential gives information about the state of the surface charge and predicts the colloidal system's long-term stability. 44 To further conrm AgNPs/NCDs nanocomposite formation, the zeta potential values of NCDs and AgNPs/NCDs were measured (Fig. 6).…”