Fluorescence spectral detection of cysteine based on the different medium-coated gold nanorods-Rhodamine 6G probe: From quenching to enhancement

Zhang, Fan; Zhu, Jingtao; Li, Jianjun; Zhao, Jun-Wu

doi:10.1016/j.snb.2015.07.067

Cited by 21 publications

(2 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rhodamine 6G is a fluorescent dye, which is commonly employed as a fluorescence reference material owing to exceptional photostability and high quantum yield [21]. Furthermore, this fluorescent dye has been extensively used in the development of sensing probes for the determination of various analytes, such as Fe(III) [22], Cu(II) and Hg(II) [23], Al(III) and Cr(III) [24], cysteine [25], and hyaluronidase [26], due to its exceptional metrological characteristics. The chemical structure of Rh6G enables its modification and attachment to the surface while preserving its fluorophore properties, which is advantageous for achieving high sensor sensitivity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

A ‘Turn-On’ Carbamazepine Sensing Using a Luminescent SiO2/-(CH2)3NH2/-C6H5 + Rh6G System

et al. 2023

View full text Add to dashboard Cite

Carbamazepine is a crucial medication used to treat nervous system disorders, and its low level of absorption in the human body suggests that a significant amount of it may be present in sewage water. Consequently, this pioneering research deals with the synthesis and application of a luminescent sensor based on rhodamine 6 G-modified bifunctional silica particles for the determination of carbamazepine. The sensing material was fabricated in one step by the sol–gel technique and the dye was adsorbed onto the surface from an alcohol solution. The composition, morphology and size of functionalized silica particles were determined by physico-chemical methods. The material’s features provide the possibility of its application as a sensing material for carbamazepine determination at a variety of concentrations. The sensor possesses a linear response towards carbamazepine in the concentration range of 0.8–200.0 μM with a limit of detection (LOD) of 17.9 μM and a limit of quantification (LOQ) of 59.7 μM and has demonstrated reliable quantification over a wide range of concentrations, from therapeutic to high fatal concentrations. Additionally, the sensing mechanism has been proposed, which involves the formation of hydrogen bonding between carbamazepine and Rhodamine 6G immobilized bifunctional silica particles.

show abstract

Section: Introductionmentioning

confidence: 99%

A ‘Turn-On’ Carbamazepine Sensing Using a Luminescent SiO2/-(CH2)3NH2/-C6H5 + Rh6G System

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Traditional detection techniques, including mass spectrometry, high-performance liquid chromatography, and electrochemistry, have been widely applied in the detection of RSS. − However, these methods usually require sophisticated preprocessing of test samples, and their real-time imaging applicability is restricted by the long detection times and complicated techniques that they require. , Fluorescent probes, which are simple, highly selective and sensitive, non-invasive, non-destructive, and real-time capable in living systems, are considered to be an effective molecular tool for the detection and imaging of RSS in plant systems. − RSS-responsive fluorescent probes based on a variety of fluorescent materials, including inorganic materials, nanoparticles, graphene, and gene-encoded fluorescent detectors, have been extensively developed and widely used in the detection and imaging in biological systems. − In comparison to these materials, organic small-molecule fluorescent probes with structural diversity are easily modified to intensify the detecting performance, high reproducibility, and response mechanisms. − …”

Section: Introductionmentioning

confidence: 99%

Fluorescence Probes for Reactive Sulfur Species in Agricultural Chemistry

Zeng

Chen

Liu

et al. 2021

J. Agric. Food Chem.

View full text Add to dashboard Cite

Sulfur is an element that is indispensable throughout the growth of plants. In plant cells, reactive sulfur species (RSS) play a vital role in maintaining cellular redox homeostasis and signal transduction. There is demand accordingly for a simple, highly selective, and sensitive method of RSS detection and imaging for monitoring dynamic changes and clarifying the biological functions of RSS in plant systems. Fluorescent analysis based on organic small-molecule fluorescent probes is an effective and specific approach to tracking plant RSS characteristics. This perspective summarizes the recent progress regarding organic small-molecule fluorescent probes for RSS monitoring, including small-molecule biological thiols, hydrogen sulfide, and sulfane sulfurs, in plants; it also discusses their response mechanism toward RSS and their imaging applications in plants across the agricultural chemistry field.

show abstract

Metal Nanoparticles‐Enhanced Biosensors: Synthesis, Design and Applications in Fluorescence Enhancement and Surface‐enhanced Raman Scattering

Yaraki

Tan

2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

Metal nanoparticles (NP) that exhibit localized surface plasmon resonance play an important role in metalenhanced fluorescence (MEF) and surface-enhanced Raman scattering (SERS). Among the optical biosensors, MEF and SERS stand out to be the most sensitive techniques to detect a wide range of analytes from ions, biomolecules to macromolecules and microorganisms. Particularly, anisotropic metal NPs with strongly enhanced electric field at their sharp corners/edges under a wide range of excitation wavelengths are highly suitable for developing the ultrasensitive plasmonenhanced biosensors. In this review, we first highlight the reliable methods for the synthesis of anisotropic gold NPs and silver NPs in high yield, as well as their alloys and composites with good control of size and shape. It is followed by the discussion of different sensing mechanisms and recent advances in the MEF and SERS biosensor designs. This includes the review of surface functionalization, bioconjugation and (directed/self) assembly methods as well as the selection/screening of specific biorecognition elements such as aptamers or antibodies for the highly selective biodetection. The right combinations of metal nanoparticles, biorecognition element and assay design will lead to the successful development of MEF and SERS biosensors targeting different analytes both in-vitro and in-vivo. Finally, the prospects and challenges of metal-enhanced biosensors for future nanomedicine in achieving ultrasensitive and fast medical diagnostics, high-throughput drug discovery as well as effective and reliable theranostic treatment are discussed.

show abstract

Fluorescence spectral detection of cysteine based on the different medium-coated gold nanorods-Rhodamine 6G probe: From quenching to enhancement

Cited by 21 publications

References 52 publications

A ‘Turn-On’ Carbamazepine Sensing Using a Luminescent SiO2/-(CH2)3NH2/-C6H5 + Rh6G System

A ‘Turn-On’ Carbamazepine Sensing Using a Luminescent SiO2/-(CH2)3NH2/-C6H5 + Rh6G System

Fluorescence Probes for Reactive Sulfur Species in Agricultural Chemistry

Metal Nanoparticles‐Enhanced Biosensors: Synthesis, Design and Applications in Fluorescence Enhancement and Surface‐enhanced Raman Scattering

Contact Info

Product

Resources

About