One-pot green synthesis of highly luminescent silicon nanoparticles using Citrus limon (L.) and their applications in luminescent cell imaging and antimicrobial efficacy

Alkaline Phosphatase-Triggered in Situ Formation of Silicon-Containing Nanoparticles for a Fluorometric and Colorimetric Dual-Channel Immunoassay

“…Conversely, with excitation under the wavelength of 440–480 nm, an obvious red shift for the emission band can be observed and the fluorescence intensity decreases significantly. The excitation-independent and -dependent emission behaviors of Si CNPs could be attributed to the direct band gap transition and the oxygen-induced defects, respectively . For the subsequent application of Si CNPs in biosensing, we interrogated the stability of prepared Si CNPs and robust stability will be conducive to their potential biological applications.…”

“…The excitation-independent and -dependent emission behaviors of Si CNPs could be attributed to the direct band gap transition and the oxygen-induced defects, respectively. 29 For the subsequent application of Si CNPs in biosensing, we interrogated the stability of prepared Si CNPs and robust stability will be conducive to their potential biological applications. After 60 min of UV irradiation (376 nm, 150 W), the fluorescence of Si CNPs preserves about 94% of the initial intensity (Figure S7A), implying a remarkable photostability.…”

“…Despite the exciting progress in preparing Si NPs, rapid synthetic strategies under accessible mild conditions are still urgently needed . It has already been reported that Si NPs can be formed by reducing silanes in a one-step reduction process. − However, the available reductants (typically ascorbic acid, hydroquinone, glucose, or gramineae plants) are very limited; meanwhile, most synthetic processes need a long reaction time (e.g., 2 days) and/or high reaction temperature. In addition, to the best of our knowledge, almost all reports overlooked the intrinsic colorimetric properties of Si NPs and their potential application in dual-readout optical assays.…”

Ultrasmall Silicon Nanoparticles for Imaging and Killing Microorganisms: A Minireview

“…In a recent example, Tiwari et al. developed a facile method to fabricate water‐dispersible SiNPs for inhibiting the growth of bacteria [37] . The SiNPs were synthesized by constantly stirring the aqueous solution containing silicon‐containing precursor (venyl‐trimethoxy‐silane (VTMS) or APTES) and Citrus limon (L.) (CL) (serving as a green reducing/capping agent) (the SiNPs prepared from VTMS or APTES was named as VTMS‐CL or APTES‐CL SiNPs, respectively) at room temperature.…”

Silicon Nanostructures for Molecular Sensing: A Review

“…Among existing solid substrates, silicon nanostructures (SiNSs) and metal-SiNSs composites are recognized as some of the potential and robust SERS-active substrates because of their admirable properties such as spatial selectivity during physical and chemical treatments, sustainable chemical tunability, surface roughness, earth-abundancy, and compatibility of today’s state-of-the-art technologies and are highly appreciated by the SERS community. , Moreover, these qualities offer the distribution of high-density plasmonic hot-spots across all the spatial planes (i.e., band edges and band gaps), which facilitate the better probability of trap target analytes in the hot-spot regions. − Therefore, chemically processed silicon-based NSs show well adaptability in SERS molecular sensing. In the extended view, a comprehensive short review by Wang et al reported extensively on silicon-based SERS substrates for effective SERS sensing .…”