A highly selective and sensitive single click novel fluorescent off–on sensor for copper and sulfide ions detection directly in aqueous solution using curcumin nanoparticles

Bhopate, Dhanaji P.; Mahajan, Prasad G.; Garadkar, K. M.; Kolekar, Govind B.; Patil, Shivajirao R.

doi:10.1039/c5nj01228g

Cited by 44 publications

(24 citation statements)

References 77 publications

(49 reference statements)

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“…The zeta potential measured by a DLS‐Zeta Sizer is −25.2 mV. The value of zeta potential in the range from −25 mV to +25 mV is an indication of the higher level stability of the nanoparticle suspension …”

Section: Resultsmentioning

confidence: 93%

“…The structured absorption band of CHY in acetone solution seen in the region 320–350 nm is reduced appreciably due to aggregation of molecules and a new red shifted band that appeared with maximum at 365 nm is assigned to the nanostructure. The large red shift in the absorption spectrum of CHYNPs as compared to CHY in acetone indicates formation of J‐type aggregates is due to strong edge‐to‐edge π‐stacking interactions . The fluorescence spectrum of CHYNPs in aqueous suspension in Figure (b) shown is a broad intense band peaking at 486 and 522 nm.…”

Section: Resultsmentioning

confidence: 96%

“…It was then kept for 30 min for stabilization. The use of polymer (PVP) was facilitated to develop specific charge over surface of nanoparticles and to control the growth rate of nanoparticles as they surrounded the nanoparticles and prevented the nanoparticles agglomerating to form a larger particle size …”

Section: Methodsmentioning

confidence: 99%

“…Fluorescent organic nanoparticles (FONs)‐based sensors have become an increasing growing research area in the field of quantitative analytical chemistry due to their sensitivity and selective behavior towards a particular analyte. Recently, FONs have been reported for the selective and sensitive detection of toxic and essential metal ions from aqueous media . Several methods are available for the preparation of FONs viz.…”

Section: Introductionmentioning

confidence: 99%

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Fluorescence‐based logic gate for sensing of Ca²⁺ and F⁻ ions using PVP crowned chrysene nanoparticles in aqueous medium

2017

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Polyvinyl pyrrolidone (PVP) crowned chrysene nanoparticles (CHYNPs) were prepared by using a reprecipitation method. Dynamic light scattering (DLS) and scanning electron microscope (SEM) studies indicate that the monodispersed spherical nanoparticles bear a negative charge on their surfaces. The bathochromic spectral shift in the UV-visible and fluorescence spectrum of CHYNPs from chrysene (CHY) in acetone solution supports the J- type aggregation of nanoparticles. The aggregation-induced enhanced emission of CHYNPs at 486 and 522 nm decreases by increasing the concentration of the Ca ion solution. It can display an ON-OFF type fluorescence response with high selectivity towards Ca ions aqueous medium. Furthermore, the in situ generated PVP-CHYNPs-Ca ensemble could recover the quenched fluorescence upon the addition of fluoride anions resulting in an OFF-ON type sensor. The present method has a correlation coefficient R = 0.988 with a detection limit of 1.22 μg/mL for Ca in the aqueous medium. The fluorescence changes of PVP crowned CHYNPs upon the addition of Ca and F can be utilized as an INHIBIT logic gate at the molecular level, using Ca and F chemical inputs and the fluorescence intensity signal as output.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fluorescence‐based logic gate for sensing of Ca²⁺ and F⁻ ions using PVP crowned chrysene nanoparticles in aqueous medium

2017

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“…Gas sensors are of paramount importance, as they allow much convenient and routine detections of several gases/vapors which can be hazardous to human health [5][6][7]. Over the past several decades various sensing technologies have been developed and employed for the detection of different gases.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Chemosensor for Quantitation of Multiple Atmospheric Gases

Bhopate¹,

Kim²,

Pg³

et al. 2017

J Nanomed Nanotechnol

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Spray‐n‐Sense: Sprayable Nanofibers for On‐Site Chemical Sensing

Bakshi

Snoswell

Kwok

et al. 2022

Adv Funct Materials

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A versatile "Spray-n-Sense" sprayable nanofiber technology for on-site chemical detection is demonstrated. Driven by compressed gas, the "Sprayn-Sense" nanofibers, as the name suggests, can be directly sprayed onto any kind or shape of surfaces, while the embedded chemical reporter enables simple colorimetric/fluorometric detection. Herein, nanofibers are sprayed on several surfaces including cardboard, glass, plastic, and rubber. The sensing capabilities of the "Spray-n-Sense" nanofibers are established through the detection of three different analytes including two metal ions (Fe 2+ and Fe 3+ using 1,10-phenanthroline and curcumin as chromogenic reporters, respectively) and ammonia (using rhodamine-B as a fluorogenic reporter) in aqueous media. Additional to being highly portable, the "Spray-n-Sense" nanofibers show impressive sensor characteristics with a sub-ppm lower limit of detection (LLOD) for Fe 2+ and a wide linear working range. Whereas, the LLOD of 6.2 and 32 ppm is achieved for Fe 3+ ions and ammonia, respectively. A custom-designed smartphone application enables quantitative analysis for reliable on-site sensing. The selectivity and specificity are imparted by the embedded reporter, and thus allow analyte detection in complex real-life samples and simultaneous detection of multiple chemical species through co-doping. The "Spray-n-Sense" nanofibers also allow for the detection of target analytes in solid samples.

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A highly selective and sensitive single click novel fluorescent off–on sensor for copper and sulfide ions detection directly in aqueous solution using curcumin nanoparticles

Abstract: Graphical representation of the binding of CURNPs to Cu2+(fluorescence off) and release of CURNPs (fluorescence on) by the reaction of S2−with copper bound to CURNPs.

Cited by 44 publications

References 77 publications

Fluorescence‐based logic gate for sensing of Ca²⁺ and F⁻ ions using PVP crowned chrysene nanoparticles in aqueous medium

Fluorescence‐based logic gate for sensing of Ca²⁺ and F⁻ ions using PVP crowned chrysene nanoparticles in aqueous medium

Fluorescent Chemosensor for Quantitation of Multiple Atmospheric Gases

Spray‐n‐Sense: Sprayable Nanofibers for On‐Site Chemical Sensing

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A highly selective and sensitive single click novel fluorescent off–on sensor for copper and sulfide ions detection directly in aqueous solution using curcumin nanoparticles

Abstract: Graphical representation of the binding of CURNPs to Cu2+(fluorescence off) and release of CURNPs (fluorescence on) by the reaction of S2−with copper bound to CURNPs.

Cited by 44 publications

References 77 publications

Fluorescence‐based logic gate for sensing of Ca2+ and F− ions using PVP crowned chrysene nanoparticles in aqueous medium

Fluorescence‐based logic gate for sensing of Ca2+ and F− ions using PVP crowned chrysene nanoparticles in aqueous medium

Fluorescent Chemosensor for Quantitation of Multiple Atmospheric Gases

Spray‐n‐Sense: Sprayable Nanofibers for On‐Site Chemical Sensing

Contact Info

Product

Resources

About

Fluorescence‐based logic gate for sensing of Ca²⁺ and F⁻ ions using PVP crowned chrysene nanoparticles in aqueous medium

Fluorescence‐based logic gate for sensing of Ca²⁺ and F⁻ ions using PVP crowned chrysene nanoparticles in aqueous medium