Glutaraldehyde non-conjugated chitosan polymer fluorophores for selective determination of picric acid via fluorescence resonance energy transfer strategy

He, Hongkun; Qi, Wenjing; Fu, Yuling; Zhao, Maoyu; Lin, Qi; Li, Rong

doi:10.1016/j.dyepig.2019.01.043

Cited by 12 publications

(2 citation statements)

References 34 publications

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“…When appropriately adorned with a suitable material, it has the capacity to expedite the electrode process considerably, markedly lowering the overpotential observed on the bare electrode . The literature review on electrochemical sensors for the nitrite assay reveals the use of several functional nanomaterials such as carbon-based nanomaterials, , metal nanoparticles, , metal–organic frameworks (MOFs), , polymers, − and nanocomposites. , Nanoparticles have been used for electrode modification in electrochemical analysis because of the qualities such their enhanced active surface area, electrocatalytic action, and mass transfer . With these advantages, compared to the majority of electrodes, a greater analytical performance can be achieved by nanomaterial-modified electrodes.…”

Section: Introductionmentioning

confidence: 99%

Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Valsalakumar,

Vasudevan

2023

Langmuir

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Nitrite contamination in food, water, and environmental samples poses a substantial health hazard, owing to its capacity for transformation into carcinogenic compounds. Given the profound ecological and physiological implications, precise and highly sensitive surveillance of nitrite has emerged as an imperative area of concern, addressing the substantial detrimental impact that it can have on both terrestrial and aquatic ecosystems. The novel electroactive polyaniline−graphene oxide composite, incorporating hexagonal zirconium phosphate discs (PGZrP), was systematically engineered as a foundation for an advanced electrochemical sensor, enabling precise nitrite detection in diverse aqueous and biological matrices. At a specific potential peak of +0.85 V, observed within a pH 7.0 phosphate buffer solution, the PGZrP-modified glassy carbon electrode (GCE) exhibited exceptional electrocatalytic proficiency in the sensing nitrite ions (NO 2 − ), surpassing the performance of alternative electrode configurations, including the zirconium phosphate-modified GCE (ZrP/GCE), graphene oxidemodified GCE (GO/GCE), polyaniline−graphene oxide-modified GCE (PG/GCE), and the unmodified bare glassy carbon electrode. The constructed sensor demonstrated an impressive limit of detection at 80 nM along with a broad and linear detection range spanning from 124 nM to 40 mM. The synergistic effect created by the close contact between ZrP and PG, which resulted in a well-enhanced electrochemical sensing capability, was responsible for this exceptional activity. The developed sensor exhibited an enhanced electrochemical performance characterized by an extended operational range, a heightened detection threshold, and exceptional sensitivity. The PGZrP/GCE sensor, as fabricated, consistently demonstrated commendable operational stability, robust reproducibility, and remarkable repeatability in its capacity for nitrite detection. Furthermore, its successful application in the precise quantification of nitrite levels within environmental water samples and blood specimens showcased an impressive recovery rate, establishing it as a promising tool for diverse analytical applications. These findings indicate the promising potential of the PGZrP composite for integration into electrochemical devices designed to deliver rapid response times, heightened sensitivity, and sustained stability, thereby placing it as a potential candidate for the production of cutting-edge sensors, particularly those employed for the precise recognition of nitrite in aquatic and biological specimens.

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Section: Introductionmentioning

confidence: 99%

Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Valsalakumar,

Vasudevan

2023

Langmuir

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“…Fluorescent groups such as BODIPY, naphthalimide 32 and coumarin can be introduced to form different chitosan based fluorescent probes through the Schiff base formation reaction 33,34 and the acylation reaction 35 of the active amino groups on chitosan. He et al 36 prepared a water-dispersed glutaraldehyde non-conjugated chitosan polymer fluorophore (GCPF) and established a sensitive fluorescence method to detect picric acid (PA) at 10-50 nM using a FRET fluorescence resonance energy transfer (FRET) mechanism.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-bodipy macromolecular fluorescent probes prepared by click reactions for highly sensitive and selective recognition of 2,4-dinitrophenylhydrazine

2022

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Crosslink‐Enhanced Emission Effect on Luminescence in Polymers: Advances and Perspectives

et al. 2020

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The crosslink‐enhanced emission effect was first proposed to explore the strong luminescence of nonconjugated polymer dots possessing only either non‐emissive or weakly emissive sub‐luminophores. Interesting phenomena in recent research indicate such enhancement caused by extensive crosslinking appears in diverse luminescent polymers with sub‐luminophores (electron‐rich heteroatomic moieties) or luminophores (conjugated π domains). This enhancement can promote the emission from nonluminous to luminous, from weakly luminous to strongly luminous, and even convert the pathway of radiative transitions. The concept of the crosslink‐enhanced emission effect should be updated and extended to an in‐depth spatial effect, such as electron overlap and energy splitting in confined domains by effective crosslinking, more than initial immobilization. This Minireview outlines the development of the crosslink‐enhanced emission effect from the perspective of the detailed classification, inherent mechanism and applicable systems. An outlook on the further exploration and application of this theory are also proposed.

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Glutaraldehyde non-conjugated chitosan polymer fluorophores for selective determination of picric acid via fluorescence resonance energy transfer strategy

Cited by 12 publications

References 34 publications

Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Zirconium Phosphate-Incorporated Polyaniline–Graphene Oxide Composite Modified Electrodes for Effective and Selective Detection of Nitrite

Chitosan-bodipy macromolecular fluorescent probes prepared by click reactions for highly sensitive and selective recognition of 2,4-dinitrophenylhydrazine

Crosslink‐Enhanced Emission Effect on Luminescence in Polymers: Advances and Perspectives

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