A silicon nanoparticle based turn off fluorescent sensor for sudan I

Abstract

A turn off sensor for sudan I based on fluorescent Si NPs which works via an inner filter effect (IFE).

Fluorescent Si QD decoration onto a flexible polymeric electrospun nanofibrous mat for the colorimetric sensing of TNT

“…Therefore, it can be mentioned that this method may be a candidate for the straightforward fabrication of a large amount of Si QDs. We also found the fluorescent peak was tuneable 10 and the resultant Si QDs could be employed as fluorescent probes for sensing, 11 cell labelling 12 or surface modification applications. Generally, the luminescence features of QD-based nanomaterials is determined by the environmental and surface properties.…”

Silicon Nanomaterials for Biosensing and Bioimaging Analysis

“…Fluorescent sensors feature excellent sensitivity, short-time data acquisition, facile manipulations and low cost, which have been intensively explored for a myriad of sensing applications. By virtue of strong and stable fluorescence of silicon nanomaterials, various types of fluorescent silicon nanomaterial-based sensors have been designed and fabricated for the detection of biological and chemical species, including glucose (Yi et al, 2013a ), agricultural chemicals (Yi et al, 2013b ), nitroaromatic explosives (Gonzalez et al, 2014 ; Ban et al, 2015 ), food additives (Jose et al, 2016 ), and intracellular pH (Chu et al, 2016 , 2017 ), and so forth. Very recently, Chu et al presented one dimensional europium (Eu)-doped SiNRs-based ratiometric sensing system without additional chemical modification, allowing for detecting intracellular pH fluctuation in live cells in real-time and long-term manners (Chu et al, 2017 ).…”

Recent Advances in Silicon Nanomaterial-Based Fluorescent Sensors

“…Based on the elegant work of synthesis of zero-dimensional fluorescent SiNPs, scientists have further devoted tremendous efforts to developing various kinds of fluorescent SiNP-based sensors for monitoring chemical and biological species, including heavy metal ions, explosives, glucose, pesticides, antibiotics, dopamine, intracellular pH, and so forth [ 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 ].…”

“…In 2016, Jose et al developed a signal-off fluorescent sensor made of hexadecylamine-capped silicon nanoparticles (SiNPs) for the determination of Sudan dyes I, which were extensively adulterating food products. Sudan I can be quantified within the range of 2.91 × 10 −5 to 4.97 × 10 −7 M, with a detection limit of 3.90 × 10 −8 M [ 63 ]. In 2016, Wang et al presented dual-mode amperometric and optical-sensing strategy for the detection of glucose by using a fluorescent SiNP-coated electrode, which is more sensitive than a glucose oxidase electrode [ 64 ].…”