Precursor Concentration Effect on Optical Properties of Carbon Dots from Cassava’s Peels

Putro, Permono Adi; Roza, Liszulfah; Isnaeni, Isnaeni

doi:10.20961/jphystheor-appl.v2i2.30664

Cited by 3 publications

(5 citation statements)

References 26 publications

(30 reference statements)

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“…Development of fluorescent CDs with high PLQY are limited by the use of precursors and reaction conditions [ 162 , 163 ]. The sensory investigations require careful optimizations of the pH, incubation time, operative temperature, etc.…”

Section: Limitationsmentioning

confidence: 99%

Review on Carbon Dot-Based Fluorescent Detection of Biothiols

Shellaiah

Sun

2023

Biosensors

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Biothiols, such as cysteine (Cys), homocysteine (Hcy), and glutathione (GSH), play a vital role in gene expression, maintaining redox homeostasis, reducing damages caused by free radicals/toxins, etc. Likewise, abnormal levels of biothiols can lead to severe diseases, such as Alzheimer’s disease (AD), neurotoxicity, hair depigmentation, liver/skin damage, etc. To quantify the biothiols in a biological system, numerous low-toxic probes, such as fluorescent quantum dots, emissive organic probes, composited nanomaterials, etc., have been reported with real-time applications. Among these fluorescent probes, carbon-dots (CDs) have become attractive for biothiols quantification because of advantages of easy synthesis, nano-size, crystalline properties, low-toxicity, and real-time applicability. A CDs-based biothiols assay can be achieved by fluorescent “Turn-On” and “Turn-Off” responses via direct binding, metal complex-mediated detection, composite enhanced interaction, reaction-based reports, and so forth. To date, the availability of a review focused on fluorescent CDs-based biothiols detection with information on recent trends, mechanistic aspects, linear ranges, LODs, and real applications is lacking, which allows us to deliver this comprehensive review. This review delivers valuable information on reported carbon-dots-based biothiols assays, the underlying mechanism, their applications, probe/CDs selection, sensory requirement, merits, limitations, and future scopes.

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Section: Limitationsmentioning

confidence: 99%

Review on Carbon Dot-Based Fluorescent Detection of Biothiols

Shellaiah

Sun

2023

Biosensors

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“…The synthesis methods of C-dots were adopted from Permono et al [4]. Inner cassava peels put in the oven at 120 °C for 12 h. Dried cassava peels were crushed by blender and sieved 40 mesh.…”

Section: Synthesis Of C-dotsmentioning

confidence: 99%

“…It is caused C-dots can be synthesized from materials that only containing a carbon atom, and the methods are faster also low cost than CNT [3]. The synthesize of C-dots from biomass based-natural resources are comparable with chemical source [4]. However, using biomass as a carbon source is a good carbon source for the preparation of C-dots, and can increase its economic value [5].…”

Section: Introductionmentioning

confidence: 99%

“…Putro et al reported that outer cassava peels can be synthesized easily using microwave-assisted [6]. Therefore, inner cassava peels also can be synthesized by hydrothermal methods [7], microwave [8], and simple carbonization in an oven [4]. Some of the featuring properties of C-dots are independent excitation-photoluminescence [9] and electrical conductivity [10], which are potential applications as optoelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we present a simple route for producing a C-dots composite with 2 steps. In the 1 st step, C-dots were synthesized from inner cassava peels using simple carbonization in an oven as previously reported [4]. Then, the C-dots solution was blended into PVA solution and it was cast on the Teflon.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spectroscopy Study of Polyvinyl Alcohol/Carbon Dots Composite Films

Putro

Yudasari

Isnaeni

et al. 2021

Walailak J Sci & Tech

Self Cite

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The unique characteristic of carbon dots (C-dots), such as optical and electrical properties, have been integrated into polyvinyl alcohol (PVA) to realize composites with synergistic. In this work, C-dots have been synthesized from inner cassava peels using simple methods at low temperatures. The C-dots were added to PVA, which is influenced the characteristic based on spectroscopy. The complex formation between PVA and C-dots was investigated by FTIR spectroscopy. The C-dots contributed to UV-Vis spectroscopy characteristic of PVA/C-dots with the absence of a new peak of absorbance spectra. Besides, C-dots also supported the electrochemical impedance spectroscopy characteristic of PVA/C-dots, so the highest ionic conductivity is induced by the enhancement of amorphous PVA when the c-dots content is increased.

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Synthesis of Carbon Dot Nanoparticles (C-Dot) from Seeds and Seedpods of Kesumba Keling (Bixa orellana) using Hydrothermal and Solvothermal Methods

Rosyada,

Sugiarti,

Suparto

2023

J. Kim. Sains Apl.

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C-dot is a 0-dimensional nanoparticle with photoluminescence properties and can be synthesized from plants, such as the Kesumba Keling plant. Kesumba Keling contains a red pigment sourced from the bixin and norbixin dyes containing functional groups like ‒COOH and ‒COO‒. These functional groups are anticipated to enhance the luminescence intensity produced by C-dot. This research focuses on synthesizing C-dots from Kesumba Keling seeds and seedpods using hydrothermal and solvothermal methods. It also involves an analysis of how different solvents and passivation agents affect the luminescence of C-dots, along with a comparison of the resulting fluorescent colors. The highest yield, at 73.26%, was achieved when using Kesumba Keling seedpods and ethanol as the solvent without adding urea. Furthermore, C-dots synthesized using ethanol as the solvent display a stronger luminescent glow compared to those produced using double-distilled water as the solvent. Additionally, all C-dots synthesized in this study emit a blue luminescence. Characterizing C-dots using a UV-Vis spectrophotometer reveals absorption peaks at two different wavelengths: 260‒280 nm and 320‒340 nm. These absorption peak results align with C-dot characteristics, as confirmed by Fourier transform infrared spectrophotometry. When comparing the intensity of C-dots, those derived from Kesumba Keling peel using the double-distilled water solvent with the addition of urea exhibit a higher intensity (measuring at 0.99) than C-dots obtained from Kesumba Keling peel using ethanol as a solvent with added urea. The solvothermal method is deemed the most effective for C-dot synthesis, as it yields the highest luminescence intensity, accompanied by an emission wavelength shift to 491.65 nm.

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Precursor Concentration Effect on Optical Properties of Carbon Dots from Cassava’s Peels

Cited by 3 publications

References 26 publications

Review on Carbon Dot-Based Fluorescent Detection of Biothiols

Review on Carbon Dot-Based Fluorescent Detection of Biothiols

Spectroscopy Study of Polyvinyl Alcohol/Carbon Dots Composite Films

Synthesis of Carbon Dot Nanoparticles (C-Dot) from Seeds and Seedpods of Kesumba Keling (Bixa orellana) using Hydrothermal and Solvothermal Methods

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