Poly-glycerol acrylate and curcumin composite: its dual emission fluorescence quenching and electrical properties for sensing 2-vinyl pyridine

Gogoi, Bedanta; Sarma, Neelotpal Sen

doi:10.1007/s10853-015-9329-x

Cited by 6 publications

(5 citation statements)

References 32 publications

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“…From the calibration curve for varying concentrations of Fav, the limit of detection (LOD) was calculated using the formula LOD = 3.3 σ/ S , where S is the slope of the plot and σ is the relative standard deviation (RSD). In this system, the LOD was calculated to be about 1.96 nM using a calibration plot . For all concentrations of Fav, the fluorescence turn-on is instantaneous and no further increase in the intensity was observed.…”

Section: Resultsmentioning

confidence: 98%

“…In this system, the LOD was calculated to be about 1.96 nM using a calibration plot. 40 For all concentrations of Fav, the fluorescence turn-on is instantaneous and no further increase in the intensity was observed. The increase in fluorescence intensity of conjugate (2) with increasing concentration of Fav follows a linear trend with a regression coefficient of 0.99, as is evident from the calibration curve (Figure 2b).…”

Section: ■ Experimental Sectionmentioning

confidence: 87%

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Soot-Based Reduced Graphene Quantum Dot/Hemin Conjugate for Favipiravir Sensing

Hazarika

Kalita

Deka

et al. 2021

ACS Appl. Nano Mater.

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A conjugated system was synthesized from reduced graphene quantum dot (rGQD) and hemin for the selective detection of favipiravir (Fav), an antiviral drug that has come into much attention during the year 2020 for its use as a drug against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The required rGQD was prepared from soot particles using Hummers' method followed by the amino-hydrothermal process. At the first step, its fluorescence was quenched by preparing the conjugate with hemin. Interestingly, the fluorescence intensity gradually increases (turn-on) with increasing concentration of Fav, and develops 9-fold higher fluorescence at 15.6 nM of Fav. The fluorescence enhancement is selective, and the limit of detection (LOD) was calculated to be about 1.96 nM. The fluorescence turnon is governed by aggregation-induced emission (AIE), which originates from electrostatic interactions between the sensor−analyte systems. A similar fluorescence turn-on was observed for Fav in human blood plasma (BP) as well as in artificial urine (AU), which indicates that the sensor is viable in real-sample analysis. In addition to Fav, its 1:1 cocrystals with theophylline (Theo) and ferulic acid (FRA) also enhance the fluorescence in real samples with an LOD of 3.47 and 12.2 nM, respectively. Therefore, the cocrystals remain intact in biological medium and the sensor interacts with cocrystals too. The detection of Fav and its cocrystals, and the development of cocrystals as alternatives in the pharmaceutical industry, is essential considering the current COVID-19 pandemic worldwide. Therefore, the findings of this work will certainly help in developing fluorescence sensors for quantitative determination of active pharmaceutical ingredients (APIs) in real samples.

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Section: Resultsmentioning

confidence: 98%

Section: ■ Experimental Sectionmentioning

confidence: 87%

Soot-Based Reduced Graphene Quantum Dot/Hemin Conjugate for Favipiravir Sensing

Hazarika

Kalita

Deka

et al. 2021

ACS Appl. Nano Mater.

Self Cite

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“…In the presence of the target vapor, the current density decreases up to 84.7 and 83.13% at an applied bias voltage of −5 to +5 V, respectively. The impedance hikes up to about 79% at lower frequency range [ 117 ].…”

Section: Nitrogen Derivativesmentioning

confidence: 99%

Curcumin Is an Iconic Ligand for Detecting Environmental Pollutants

Thiyagarajan

Balasubramanian

Muninathan

et al. 2022

Bioinorganic Chemistry and Applications

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The rapid increase in industrial revolution and the consequent environmental contamination demands continuous monitoring and sensitive detection of the pollutants. Nanomaterial-based sensing system has proved to be proficient in sensing environmental pollutants. The development of novel ligands for enhancing the sensing efficiency of nanomaterials has always been a challenge. However, the amendment of nanostructure with molecular ligand increases the sensitivity, selectivity, and analytical performance of the resulting novel sensing platform. Organic ligands are capable of increasing the adsorption efficacy, optical properties, and electrochemical properties of nanomaterials by reducing or splitting of band gap. Curcumin (diferuloylmethane) is a natural organic ligand that exhibits inherent fluorescence and electrocatalytic property. Due to keto-enol tautomerism, it is capable of giving sensitive signals such as fluorescence, luminescence, ultraviolet absorption shifts, and electrochemical data. Curcumin probes were also reported to give enhanced meterological performances, such as low detection limit, repeatability, reproducibility, high selectivity, and high storage stability when used with nanosystem. Therefore, research on curcumin-modified nanomaterials in the detection of environmental pollution needs a special focus for prototype and product development to enable practical use. Hence, this article reviews the role of curcumin as a natural fluorophore in optical and electrochemical sensing of environmentally significant pollutants. This review clearly shows that curcumin is an ideal candidate for developing and validating nanomaterials-based sensors for the detection of environmental pollutants such as arsenic, lead, mercury, boron, cyanide, fluoride, nitrophenol, trinitrotoluene, and picric acid and toxic gases such as ammonia and hydrogen chloride. This review will afford references for future studies and enable researchers to translate the lab concepts into industrial products.

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“…For example, Gogoi and Sarma developed a poly(glycerol acrylate) and curcumin cross-linked composite for chemical sensing. 8 Monofunctional monomers can be obtained by protecting the 2,3 hydroxyl groups of glycerol before introducing polymerizable functions, such as converting them to glycerol carbonate with phosgene or to ketal derivatives like solketal. 9 Poly-(glycerol carbonate) has been utilized by Britz et al in lithium ion conductors, 10 while solketal, with its acid-sensitive ketal group, is notable in biomedical applications for its pHresponsive hydrolysis, facilitating the design of drug delivery systems.…”

Section: ■ Introductionmentioning

confidence: 99%

“…These derivatives are compatible with various radical polymerization techniques, though their multifunctional nature often designates them as cross-linkers. For example, Gogoi and Sarma developed a poly(glycerol acrylate) and curcumin cross-linked composite for chemical sensing . Monofunctional monomers can be obtained by protecting the 2,3 hydroxyl groups of glycerol before introducing polymerizable functions, such as converting them to glycerol carbonate with phosgene or to ketal derivatives like solketal .…”

Section: Introductionmentioning

confidence: 99%

Glycerol-Based Pressure Sensitive Adhesives: Synthesis and Applications

Lin,

Claypool,

Forrester

et al. 2024

ACS Sustainable Chem. Eng.

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Block copolymers derived from glycerol, a costeffective and plentiful resource, have demonstrated significant potential for pressure-sensitive adhesive (PSA) applications. This study focuses on functionalizing two monomers, acrylated glycerol and solketal acrylate, derived from glycerol, to synthesize two (meth)acrylate-based block copolymers, poly(methyl methacrylate-block-acrylated glycerol) (MMAAG) and poly(isobornyl acrylateblock-solketal acrylate-block-isobornyl acrylate) (IBASA), using reversible addition−fragmentation chain transfer (RAFT) polymerization. These elastomers, notable for their intrinsic tackiness, are formulated with plasticizers to achieve the desired PSA properties. We investigate their viscoelastic and morphological properties using dynamic shear rheology and small-angle X-ray scattering, respectively. The PSA performance is evaluated through 180°peel testing under various conditions including different adherends, humidity levels, and peel rates. Our findings reveal that a benzoate ester-plasticized IBASA block copolymer, with a molecular weight of 100 kDa and containing 20 wt % IBA, exhibits peel performance on par with 3M Scotch Magic Tape. These results underscore the potential of glycerol-based PSAs as sustainable alternatives to traditional petroleum-based adhesives.

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Poly-glycerol acrylate and curcumin composite: its dual emission fluorescence quenching and electrical properties for sensing 2-vinyl pyridine

Cited by 6 publications

References 32 publications

Soot-Based Reduced Graphene Quantum Dot/Hemin Conjugate for Favipiravir Sensing

Soot-Based Reduced Graphene Quantum Dot/Hemin Conjugate for Favipiravir Sensing

Curcumin Is an Iconic Ligand for Detecting Environmental Pollutants

Glycerol-Based Pressure Sensitive Adhesives: Synthesis and Applications

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