One-pot microwave-assisted synthesis of blue emissive multifunctional N-S-P co-doped carbon dots as a nanoprobe for sequential detection of Cr(VI) and ascorbic acid in real samples, fluorescent ink and logic gate operation

Laddha, Harshita; Yadav, Priya; Jain, Yachana; Sharma, Manish; Reza, Mohtashim; Agarwal, Madhu

doi:10.1016/j.molliq.2021.117088

Cited by 41 publications

(22 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CDs can be synthesized by the microwave-assisted process in which electromagnetic radiation is applied to the precursors. Laddha et al [ 38 ] prepared CDs by a microwave-induced decomposition of glutathione, polyethylene glycol (PEG-400), and H 3 PO 4 precursors. Highly fluorescent (quantum yield 15%), water-soluble, and blue-emitting N-S-P co-doped CDs were prepared and used for selective and sensitive sensing of toxic Cr(VI) ions.…”

Section: Preparation and Modification Of Cdsmentioning

confidence: 99%

Recent Advances in Synthesis, Modification, Characterization, and Applications of Carbon Dots

Pundi

Chang

2022

Polymers

View full text Add to dashboard Cite

Although there is significant progress in the research of carbon dots (CDs), some challenges such as difficulty in large-scale synthesis, complicated purification, low quantum yield, ambiguity in structure-property correlation, electronic structures, and photophysics are still major obstacles that hinder the commercial use of CDs. Recent advances in synthesis, modification, characterization, and applications of CDs are summarized in this review. We illustrate some examples to correlate process parameters, structures, compositions, properties, and performances of CDs-based materials. The advances in the synthesis approach, purification methods, and modification/doping methods for the synthesis of CDs are also presented. Moreover, some examples of the kilogram-scale fabrication of CDs are given. The properties and performance of CDs can be tuned by some synthesis parameters, such as the incubation time and precursor ratio, the laser pulse width, and the average molar mass of the polymeric precursor. Surface passivation also has a significant influence on the particle sizes of CDs. Moreover, some factors affect the properties and performance of CDs, such as the polarity-sensitive fluorescence effect and concentration-dependent multicolor luminescence, together with the size and surface states of CDs. The synchrotron near-edge X-ray absorption fine structure (NEXAFS) test has been proved to be a useful tool to explore the correlation among structural features, photophysics, and emission performance of CDs. Recent advances of CDs in bioimaging, sensing, therapy, energy, fertilizer, separation, security authentication, food packing, flame retardant, and co-catalyst for environmental remediation applications were reviewed in this article. Furthermore, the roles of CDs, doped CDs, and their composites in these applications were also demonstrated.

show abstract

Section: Preparation and Modification Of Cdsmentioning

confidence: 99%

Recent Advances in Synthesis, Modification, Characterization, and Applications of Carbon Dots

Pundi

Chang

2022

Polymers

View full text Add to dashboard Cite

show abstract

“…Herein, in continuation of our efforts to develop chemosensors, − a portable, easy-to-use, and low-cost smartphone-based colorimetric approach has been designed for second-year undergraduate chemistry students to assay fluoride ions in water. In this designed experiment, a simple and economical green synthetic protocol was introduced to second-year-undergraduate chemistry students to synthesize a colorimetric chemosensor.…”

Section: Introductionmentioning

confidence: 99%

Fun with Smartphones: Handy Solution for Quantification of Debilitating Fluoride Ions in Drinking Water

2022

Self Cite

View full text Add to dashboard Cite

A smartphone-based digital imaging method has been successfully introduced in an undergraduate laboratory class to quantify fluoride ions in water. Students first synthesized the chemosensor (E)-2-(1-(6-nitro-2-oxo-2H-chromen-3-yl)ethylidene)-N-phenylhydrazine-1-carbothioamide (CT) via an eco-friendly and green microwave-assisted protocol and characterized the product using FTIR spectroscopy, HRMS, and NMR spectroscopy. Students are advised to quantify the colorimetric response of a chemosensor toward fluoride ion by a UV−vis spectrophotometer and smartphone with the preinstalled Color Picker Android application to read the output RGB values, simultaneously. The agreement of results from the developed smartphone-based colorimetry protocol with the conventional UV−vis method validated the feasibility of the smartphone as a new analytical tool for versatile, cheap, and prompt analysis of fluoride ions in real samples. Overall, the experiment develops a multidimensional understanding of green chemistry principles and atom economy as well as characterization techniques, data collection, calibration plots, Job's plot, and interpretation of results.

show abstract

“…16 Even though the World Health Organization (WHO) has set a consumption limit of 0.05 μg ml −1 for CrĲVI), there is still a lack of studies to figure out the minimum amount of CrĲVI), which could lead to disease when ingested. 17 [18][19][20] Ascorbic acid, commonly known as vitamin C, plays a vital role in maintaining healthy physiological functions. 21 However, as it is known that the human body cannot synthesize ascorbic acid, it has been acquired from food, and drugs.…”

Section: Introductionmentioning

confidence: 99%

“…17 Zhang H. et al , Laddha H. et al , and Anand S. R. et al have all reported N and S co-doped carbon dots as a selective sensor for Cr( vi ) ions. 18–20…”

Section: Introductionmentioning

confidence: 99%

Highly crystalline N and S co-doped carbon dots as a selective turn off–on sensor for Cr(vi) and ascorbic acid and a turn off sensor for metanil yellow

Abbasi

Shakir

2022

Sens. Diagn.

View full text Add to dashboard Cite

show abstract

One-pot microwave-assisted synthesis of blue emissive multifunctional N-S-P co-doped carbon dots as a nanoprobe for sequential detection of Cr(VI) and ascorbic acid in real samples, fluorescent ink and logic gate operation

Cited by 41 publications

References 57 publications

Recent Advances in Synthesis, Modification, Characterization, and Applications of Carbon Dots

Recent Advances in Synthesis, Modification, Characterization, and Applications of Carbon Dots

Fun with Smartphones: Handy Solution for Quantification of Debilitating Fluoride Ions in Drinking Water

Highly crystalline N and S co-doped carbon dots as a selective turn off–on sensor for Cr(vi) and ascorbic acid and a turn off sensor for metanil yellow

Contact Info

Product

Resources

About