Water Soluble Silicon Nanoparticles as a Fluorescent Probe for Highly Sensitive Detection of Rutin

Abstract

In this work, water-soluble fluorescent silicon nanoparticles (SiNPs) were prepared by one-pot hydrothermal method using 3-(2-aminoethylamino)propyldimethoxymethylsilane (AEAPDMMS) as a silicon source and amidol as a reducing agent. The prepared SiNPs showed bright green fluorescence, excellent stability against photobleaching, salt tolerance, temperature stability, and good water solubility. Due to the internal filtration effect (IFE), rutin could selectively quench the fluorescence of the SiNPs. Based on such phenomena, a highly sensitive fluorescence method was established for rutin detection. The linear range and limit of detection (LOD) were 0.05–400 μM and 15.2 nM, respectively. This method was successfully applied to detect rutin in the samples of rutin tablets, Sophora japonica , fry Sophora japonica , and S. japonica carbon with satisfactory recovery.

Green synthesis of yellow-green emissive silicon nanoparticles and their application for the sensitive fluorescence detection of bilirubin

“…2C) showed three fitting peaks at 398.1 eV (N–Si), 398.5 eV (C–N–C), and 398.8 eV (N–H). 38 Three fitting peaks at 530.7 eV (O–Si), 531.4 eV (O–Si) and 532.0 eV (O–C) could be observed in the high-resolution XPS spectrum of O 1s 29 (Fig. 2D).…”

“…The characteristic absorption bands at 3360 cm −1 , 3282 cm −1 , 2931 cm −1 , 2819 cm −1 , 1596 cm −1 , 1462 cm −1 , 1307 cm −1 , 1127 cm −1 , 1038 cm −1 and 934 cm −1 were assigned to ν (O–H), ν (N–H), ν (C–H), δ (C–H), δ (CC), ν (B–O), ν (C–B/C–O), ν (Si–O), δ (Si–C) and ν (Si–N), respectively. 29,31–36 The –OH and –NH 2 of SiNPs make them have good water dispersion and stability. In addition, the elemental composition and functional group structure of the prepared SiNPs were further analyzed by XPS.…”

“…The characteristic absorption peaks at 222 nm and 435 nm were assigned to the p-p* transition of C]C and the n-p* transition of C]O, respectively (curve c). 28,29 The SiNP solution showed bright yellow-green uorescence under UV irradiation at 365 nm (inset in Fig. 1A).…”

Silicon nanoparticles: fabrication, characterization, application and perspectives

“…Moreover, water-soluble silicon nanopaticles are emerging as compact fluorescent silicon nanomaterials (Fig. 4f ) [56]. Compared to conventional fluorescent quantum dots, water-soluble silicon nanoparticles have a simpler composition and are devoid of heavy metal elements.…”

Silicon Nanoparticle-Based Ratiometric Fluorescence Probes for Highly Sensitive and Visual Detection of VB2

“…SiNPs usually have excellent thermal stability, salt resistance, and photobleaching resistance, which is a solid foundation for SiNPs to be excellent fluorescent nanoprobes. There are various one-step methods for preparing water-soluble SiNPs, including electrochemical etching methods, microwave-assisted methods, ultraviolet radiation methods, hydrothermal methods, , and so on. Among them, hydrothermal methods are favored by researchers because of their outstanding advantages of mild experimental conditions, cheap equipment, and environmental friendliness.…”