Biocompatible carbon dots derived from κ-carrageenan and phenyl boronic acid for dual modality sensing platform of sugar and its anti-diabetic drug release behavior

Das, Poushali; Maity, Pintu; Ganguly, Sayan; Ghosh, Sabyasachi; Baral, Joydeep; Bose, Moumita; Choudhary, Sumita; Gangopadhyay, S.; Dhara, Santanu; Das, Amit Kumar; Banerjee, Susanta

doi:10.1016/j.ijbiomac.2019.03.224

Cited by 82 publications

(34 citation statements)

References 72 publications

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“…There have been several efforts to apply fluorescent CDs into the field of sensors [7], optoelectronics [3], energy storage [8], light-emitting diode (LED) [9], drug delivery [10], antibacterial [11,12], bioimaging [13,14], catalysis [15], etc. To date, different synthetic routes have been identified to prepare CDs including hydrothermal [16,17], solvothermal [18,19], ultrasonication [20][21][22], simple heating [23,24], arc discharge [25], microwave-assisted pyrolysis [26,27], laser ablation [2,28], electrochemical [29,30], etc. Initially, carbonaceous materials were utilized for the preparation of CDs resulting in lower quantum yields (QY) and limited solubilities.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

et al. 2021

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Carbon dots (CDs) were obtained from medicinal turmeric leaves (Curcuma longa) by a facile one-step hydrothermal method and evaluated for their bactericidal activities against two gram-negative; Escherichia coli, Klebsiella pneumoniae, and two gram-positive counterparts; Staphylococcus aureus, S. epidermidis. The CDs exhibited spherical shapes with a mean size of 2.6 nm. The fluorescence spectra of CDs revealed intense fluorescence at λex/em = 362/429 nm with a bright blue color in an aqueous solution. The CDs showed strong photostability under various environmental conditions (pH, salt, and UV-radiation). The complete bactericidal potency of CDs was 0.25 mg/mL for E.coli and S. aureus after 8 h of exposure, while for K. pneumoniae, and S. epidermidis, the CDs at 0.5 mg/mL good antibacterial effect within 8 h and complete eradication after 24 h of exposure is observed. The release of reactive oxygen species played a crucial role in the death of the bacterial cell. The present study provides a strategy for the preparation of CDs from a medicinal plant and their potential antibacterial activities against four common contagious pathogens.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

et al. 2021

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“…Based on these unique optical properties, fluorescent CDs are great potential candidates for fluorescent bioimaging. In addition, CDs also exhibit great potential on the sensor for ions [23][24][25] and (bio)molecules [26][27][28] and antibacterial materials, which introduced the positively charged quaternary ammonium groups or silver nanoparticles [29][30][31][32][33]. In this review, we are focusing on the fluorescent carbon dots used for fluorescent probes for bioimaging and related multiple function composites for biological applications.…”

Section: Introductionmentioning

confidence: 99%

Recent advance of carbon dots in bio-related applications

Wang

Bao

et al. 2020

J. Phys. Mater.

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Carbon dots (CDs) is a kind of carbon nanoparticles with a plentiful of surface functional groups and tunable emission with different excitation wavelength. Broadly speaking, CDs include carbon nanodots, carbon quantum dots, graphene quantum dots, carbonized polymer dots. Due to the unique nature, they are explored for various applications in the bio-related fields such as bioimaging, sensor for ion and (bio)molecules, catalyst, LED and other fields. They are viewed as great alternative tracers to the current fluorescent biomarkers in personalized nanomedicine and surgery operation monitoring. In this review, we summarized the recent progress in the development of CDs, including improvement in fluorescence properties, two-photon fluorescence, and integration with other modalities as theragnostic agents. Specifically, we discussed the preparation of dual-modal imaging agents to improve the accuracy of diagnosis, the combination of imaging and targeting functionality for the effective accumulation of biomarkers, and the integration of imaging and therapeutic agents to effectively monitor the localization and concentration of therapeutic agents. Finally, the theragnostic agents composed of three functionalities (e.g. targeting, imaging, and therapy) were summarized to provide readers with future perspectives in this field.

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“…A pH of 9 yielded the highest fluorescence emission. This pH dependence is a result of protonation and deprotonation of the carbon dots, leading to modulation of the emissive sites as also found in carbon dots prepared from, for example, κ‐carrageenan and phenyl boronic acid, [40] cherry blossom flowers, [41] and water hyacinth leaves [42] . The photostability of carbon dots for a period of time was next examined.…”

Section: Resultsmentioning

confidence: 96%

Highly sensitive Ni²⁺ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity

et al. 2021

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In this work, the novel, simple Ni 2 + sensors with high sensitivity, selectivity, accuracy, practicality, and adsorption capacity were developed from the label-free carbon dots. The carbon dots were prepared from polyurethane through a onestep pyrolysis method. They exhibited excitation-independent photoluminescence and offered a fluorescence quantum yield of 24 %. They were then tested for metal ion sensing, showing selectivity towards Ni 2 + against a range of metal ions with a detection limit of 3.14 μM, the best for the carbon dots reported to date. A carbon dot-loaded paper-based sensor was also fabricated for Ni 2 + detection, showing a limit of detection of 43.3 μM. The detection of Ni 2 + in real water samples showed excellent recovery of 95.6 to 99.2 %. The selective detection of Ni 2 + by the carbon dots arose from the inner filter effect and complex formation, leading to fluorescence quenching of the carbon dots. X-ray absorption analysis further confirmed the unique interaction and electron transfer from the carbon dots to Ni 2 + . In addition to high-performance sensing, the carbon dots demonstrated high adsorbent capacity towards Ni 2 + , in which one nanoparticle could accommodate up to 182 Ni 2 + ions, equivalent to 234.8 mg g À 1 . This work demonstrates the unique sensing and adsorbent properties of polyurethanederived carbon dots towards Ni 2 + , which can be applied for simultaneous monitoring and cleaning.

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Biocompatible carbon dots derived from κ-carrageenan and phenyl boronic acid for dual modality sensing platform of sugar and its anti-diabetic drug release behavior

Cited by 82 publications

References 72 publications

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Recent advance of carbon dots in bio-related applications

Highly sensitive Ni²⁺ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity

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Biocompatible carbon dots derived from κ-carrageenan and phenyl boronic acid for dual modality sensing platform of sugar and its anti-diabetic drug release behavior

Cited by 82 publications

References 72 publications

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Recent advance of carbon dots in bio-related applications

Highly sensitive Ni2+ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity

Contact Info

Product

Resources

About

Highly sensitive Ni²⁺ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity