Photoluminescent sensing hydrogel platform based on the combination of nanocellulose and S,N-codoped graphene quantum dots

Ruiz-Palomero, Celia; Soriano, M. Laura; Benítez–Martínez, Sandra; Valcárcel, Miguel

doi:10.1016/j.snb.2017.02.006

Cited by 89 publications

(48 citation statements)

References 41 publications

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“…Another benefit of the pHEMA was that it did not affect the GQDs fluorescence quenching in response to dissolved iron. [16] Herein we present the first report of a GQD embedded hydrogel based pseudo-solid-state iron sensor in which GQDs synthesised from the pyrolysis of citric acid were embedded in pHEMA. The sensor displays a fast and sustained response to Fe(III), is selective over other ions and allows for quantification of Fe(III) in both ultrapure and municipal reticulated water supplies.…”

Section: Introductionmentioning

confidence: 99%

Graphene Quantum Dot Embedded Hydrogel for Dissolved Iron Sensing

et al. 2019

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A robust and accurate chemical sensor for dissolved iron has been developed, based on highly fluorescent graphene quantum dots (GQDs). This work describes the construction of a GQD embedded hydrogel that displays strong fluorescence emission from the bulk structure. The hydrogel is made from poly(2‐hydroxyethyl methacrylate) (pHEMA) and crosslinked by ethylene glycol dimethacrylate to form a water permeable, flexible and transparent material. Polymerisation in the presence of the GQDs physically entraps the fluorescent nanoparticles within the hydrogel. The fluorescence properties of the GQD‐pHEMA hydrogels have been thoroughly characterised, including by confocal microscopy in the first reported use of this technique for a GQD composite material. Sensing of dissolved Fe(III) by the GQD‐pHEMA hydrogels has been demonstrated, whereby the Fe(III) quenches the GQDs fluorescence emission. The GQD‐pHEMA hydrogels were selective to Fe(III) and showed a linear response for concentrations in the range of 10–200 μM.

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Section: Introductionmentioning

confidence: 99%

Graphene Quantum Dot Embedded Hydrogel for Dissolved Iron Sensing

et al. 2019

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“…Pressure/strain sensor [14,18,19b,26i,124,128-130] Bacteria sensor, [126] human neutrophil elastase (HNE) sensor [127] Toxic compound sensor, [125] metal nanoparticles-selective sensor, [26j,123] humidity sensor, [5] gas sensor [18,26h,131]…”

Section: Brittleness Structural Instability In Watermentioning

confidence: 99%

Ultrasensitive Physical, Bio, and Chemical Sensors Derived from 1‐, 2‐, and 3‐D Nanocellulosic Materials

Dai

Wang

Zou

et al. 2020

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142

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Sensors are of increasing interest since they can be applied to daily life in different areas from various industrial sectors. As a natural nanomaterial, nanocellulose plays a vital role in the development of novel sensors, particularly in the context of constructing multidimensional architectures. This review summarizes the utilization of nanocellulose including cellulose nanofibers, cellulose nanocrystals, and bacterial cellulose for sensor design, mainly focusing on the influence of nanocellulose on the sensing performance of these sensors. Special attention is paid to nanocellulose in different forms (1D, 2D, and 3D) to highlight the impact of nanocellulose constructed structures. The aim is to provide a critical review on the most recent progress (especially after 2017) related to nanocellulose‐containing sensors, since there are significantly increasing research activities in this area. Moreover, the outlook for the development of nanocellulose‐containing sensors is also provided at the end of this work.

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“…It was found that S,N‐GQDs‐NCs hydrogels have selective sensing ability of 2,4,5‐trichlorophenol (TCP) that, as a kind of human carcinogen, exists in fungicides and herbicides. The laboratory tested the hydrogel sensor platform for TCP detection in specific red wine and water samples and the results showed excellent fluorescence intensity and sensing performance, indicating a means for rapid result display in the field of biomedical design …”

Section: Fluorescent Sensing Platform Based On Ncsmentioning

confidence: 99%

“…The laboratory tested the hydrogel sensor platform for TCP detection in specific red wine and water samples and the results showed excellent fluorescence intensity and sensing performance, indicating a means for rapid result display in the field of biomedical design. [50] Beyond that, Celia et al have reported a fluorescent hydrogel sensor based on TEMPO oxidation of carboxyl NCs and bis (2, 2'-bipyridine)-[4-(4'-methyl-2,2'-bipyridin-4-yl)propylamine] ruthenium (II) dihexafluorophosphate complex [Ru(bpy) 2 (abpy)](PF 6 ) 2 for detecting silver nanoparticles (AgNPs). This is the first time that nanocomposites have been used to detect NPs in the same analytical process.…”

Section: Fluorescent Sensor Platforms For Toxic Compoundsmentioning

confidence: 99%

Design and Synthesis of Fluorescent Nanocelluloses for Sensing and Bioimaging Applications

Zhang

Liu

et al. 2020

ChemPlusChem

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Recent materials research based on fluorescent nanocelluloses (NCs) used in the field of sensing and bioimaging is reviewed. Many designed morphologies have been reported, such as nanoparticles, fibers, nanopapers, hydrogels and aerogels, that have been produced by physical or chemical methods. In the field of sensing and bioimaging, these studies have involved, but not been limited to, special optical properties including fluorescence, long‐lived luminescence, polarized light, and/or aggregation‐induced emission. The fluorescence sensing platforms can be categorized according to stimuli such as pH and temperature, as well as the presence of toxic compounds, and anions and metal cations. In addition, NCs exhibit unique low toxicity, good biocompatibility, biodegradability and cell membrane penetration, and can be modified into fluorescent nanoprobes for in vivo imaging and tracing. As an excellent platform for fluorescent sensing and bioimaging, NCs are bound to be increasingly studied and widely applied in the field of production and life sciences.

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Photoluminescent sensing hydrogel platform based on the combination of nanocellulose and S,N-codoped graphene quantum dots

Cited by 89 publications

References 41 publications

Graphene Quantum Dot Embedded Hydrogel for Dissolved Iron Sensing

Graphene Quantum Dot Embedded Hydrogel for Dissolved Iron Sensing

Ultrasensitive Physical, Bio, and Chemical Sensors Derived from 1‐, 2‐, and 3‐D Nanocellulosic Materials

Design and Synthesis of Fluorescent Nanocelluloses for Sensing and Bioimaging Applications

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