Review of long wavelength luminescent carbon-based nanomaterials: preparation, biomedical application and future challenges

Huo, Feng; Li, Wenqiong; Liu, Yuhang; Liu, Xiaohong; Lee, Chong Yew; Zhang, Wei

doi:10.1007/s10853-020-05435-3

Cited by 16 publications

(10 citation statements)

References 104 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carbon nanodots are synthesized in a number of ways, adopting “top-down” and “bottom-up” approaches. − In a “top-down” approach, large pieces of raw carbon materials are decomposed or broken down into nanosized particles under high temperatures and pressure, whereas the “bottom-up” approach allows the synthesis of carbon-based dots from carbon-containing small molecules through a “decomposition–polymerization–carbonization” process (Scheme a) . In one of the earlier top-down approaches, Xu et al prepared fluorescent CDs derived from single-walled carbon nanotubes using the arc discharge method .…”

Section: Synthetic Methodsmentioning

confidence: 99%

“…53−55 In a "topdown" approach, large pieces of raw carbon materials are decomposed or broken down into nanosized particles under high temperatures and pressure, whereas the "bottom-up" approach allows the synthesis of carbon-based dots from carbon-containing small molecules through a "decomposition−polymerization−carbonization" process (Scheme 4a). 56 In one of the earlier top-down approaches, Xu et al prepared fluorescent CDs derived from single-walled carbon nanotubes using the arc discharge method. 57 In another approach, Sun's group bombarded a graphite target by using a Nd:YAG laser to prepare nonfluorescent carbon nanoparticles and passivated them with poly(ethylene glycol) (PEG 1500 N) to obtain CDs with strong fluorescence.…”

Section: Synthesis Of Mnomentioning

confidence: 99%

See 1 more Smart Citation

Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Hiremath

Banerjee

Chatterjee

2022

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

In the past decade, a variety of MnO 2 nanostructures have been used in chemosensing applications because of their unique redox properties, structural diversity, and broad absorption band, which makes them good energy acceptors. The most common strategy in Forster (or fluorescence) resonance energy transfer (FRET)-based chemosensing assays is to use low-dimensional fluorescent dots like carbon-based dots, metal dots, and even fluorescent dyes to form donor−acceptor pairs with 2D MnO 2 nanosheets (NSs). This review is a collection of the current library on fluorescent nanodots and MnO 2 NSs-based FRET conjugates as sensing platforms with a focus on highlighting the strategies involved in the detection of various analytes. Commonly, an analyte-triggered redox reaction results in the decomposition of MnO 2 NSs, leading to the release of fluorescent nanodots in solution for the turn-on detection of various reducing species. We intend to elaborately discuss the systematic upgradation of detection strategies involving fluorescent dots@2D MnO 2 NSs. Recently, a cascade of redox reactions was judiciously employed to target several bioanalytes involving a fluorescent dots@MnO 2 NSs FRET conjugate in a selective and sensitive manner. These sensing assays are categorized by the use of different fluorescent nanodots [carbon dots (CDs) and graphene quantum dots (GQDs), polymer dots, metal dots, etc.] with 2D MnO 2 NSs as FRET pairs in different sensing applications. Further, the analytes were categorized as reducing species, oxidants, enzymes, microbes, etc. The focus was paid to the sensing efficiency of the analytical tool. As a part of the study, a brief account of the synthesis of nanodots and MnO 2 NSs, their properties, and the FRET mechanism is also included. In a few cases, the sensing mechanism follows an inner filter effect without a prerequisite of the distance between the fluorophore and quencher units in the sensing of analytes, which are also covered in this collection. The available literature indicates a bright future for these FRET-based contemporary sensing strategies as environmentally benign, cost-effective, label-free techniques, which are discussed in the end.

show abstract

Section: Synthetic Methodsmentioning

confidence: 99%

Section: Synthesis Of Mnomentioning

confidence: 99%

Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Hiremath

Banerjee

Chatterjee

2022

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…As the promising and advanced fluorescent nanoparticles with size less than 10 nm, carbon dots (CDs) which possess merits of abundant and eco-friendly precursors, green, affordable and convenient preparation as well as easy modification, have attracted tremendous research interest over multifarious interdisciplinary research fields on account of the exceptional preponderances, including good water solubility, low toxicity, and admirable biocompatibility [15][16][17][18]. On the basis of these exceptional photophysical properties, CDs exhibit wide prospective applications in constructing chemical sensors for various fields, ranging from biological sensing, tracking, imaging, and environmental monitoring to invisible security ink [19][20][21][22]. However, despite these attractive advantages, the CDs still surfer certain limitations, such as low fluorescence quantum yield (QY) and poor selectivity with respect to detection.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional N,S-doped and methionine functionalized carbon dots for on-off-on Fe3+ and ascorbic acid sensing, cell imaging, and fluorescent ink applying

Yang

Xu²,

Zhang³

et al. 2022

Nano Res.

View full text Add to dashboard Cite

Fluorescent carbon dots (CDs) have been identified as potential nanosensors and attracted tremendous research interests in wide areas including anti-counterfeiting, environmental and biological sensing and imaging in considering of the attractive optical properties. In this work, we present a CDs based fluorescent sensor from polyvinylpyrrolidone, citric acid, and methionine as precursors by hydrothermal approach. The selective quantifying of Fe 3+ and ascorbic acid (AA) are based on the fluorescent on-off-on process, in which the fluorescent quenching is induced by the coordination of the Fe 3+ on the surface of the CDs, while the fluorescence recovery is mainly attributed to redox reaction between Fe 3+ and AA, breaking the coordination and bringing the fluorescence back. Inspired by the good water solubility and biocompatibility, significant photostability, superior photobleaching resistance as well as high selectivity, sensitivity, and interference immunity, which are constructed mainly from the N,S-doping and methionine surface functionalization, the CDs have not only been employed as fluorescence ink in multiple anticounterfeiting printing and confidential document writing or transmitting, but also been developed as promising fluorescence sensors in solution and solid by CDs doped test strips and hydrogels for effectively monitoring and removing of Fe 3+ and AA in environmental aqueous solution. The CDs have been also implemented as effective diagnostic candidates for imaging and tracking of Fe 3+ and AA in living cells, accelerating the understanding of their function and importance in related biological processes for the prevention and treatment specific diseases.

show abstract

“…Carbon quantum dots (CQDs) are a new type of fluorescent material that have been applied for food assessment [17], biological analysis [18], and environmental monitoring, [19] owing to their excellent optical properties and biocompatibility [20]. Previous studies have shown that CQDs exhibit excellent responses to pH variations and can be used for the detection of pH and organophosphorus pesticides [17,21,22].…”

Section: Introductionmentioning

confidence: 99%

Easy-to-Use Visual Sensing System for Milk Freshness, Sensitized with Acidity-Responsive N-Doped Carbon Quantum Dots

Zhang

et al. 2022

Foods

View full text Add to dashboard Cite

This study established a flexible and eye-readable sensing system for the easy-to-use, visual detection of milk freshness, using acidity-responsive N-doped carbon quantum dots (N-CQDs). N-CQDs, rich in amino groups and with characteristic acidity sensitivity, exhibited high relative quantum yields of 25.2% and an optimal emission wavelength of 567 nm. The N-CQDs fluorescence quenching upon the dissociated hydrogen ions (H+) in milk and their reacting with the amino groups produced an excellent linear relation (R2 = 0.996) between the fluorescence intensity and the milk acidity, which indicated that the fluorescence of the N-CQDs was highly correlated with milk freshness. Furthermore, a fluorescence sensor was designed by depositing the N-CQDs on filter-papers and starch-gel films, to provide eye-readable signals under UV light. A fluorescence colorimetric card was developed, based on the decrease in fluorescence brightness as freshness deteriorated. With the advantages of high sensitivity and eye readability, the proposed sensor could detect spoiled milk in advance and without any preprocessing steps, offering a promising method of assessing food safety.

show abstract

Review of long wavelength luminescent carbon-based nanomaterials: preparation, biomedical application and future challenges

Cited by 16 publications

References 104 publications

Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Multifunctional N,S-doped and methionine functionalized carbon dots for on-off-on Fe3+ and ascorbic acid sensing, cell imaging, and fluorescent ink applying

Easy-to-Use Visual Sensing System for Milk Freshness, Sensitized with Acidity-Responsive N-Doped Carbon Quantum Dots

Contact Info

Product

Resources

About

Review of long wavelength luminescent carbon-based nanomaterials: preparation, biomedical application and future challenges

Cited by 16 publications

References 104 publications

Review of 2D MnO2 Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Review of 2D MnO2 Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Multifunctional N,S-doped and methionine functionalized carbon dots for on-off-on Fe3+ and ascorbic acid sensing, cell imaging, and fluorescent ink applying

Easy-to-Use Visual Sensing System for Milk Freshness, Sensitized with Acidity-Responsive N-Doped Carbon Quantum Dots

Contact Info

Product

Resources

About

Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications