Carbon Nanodots from an In Silico Perspective DOI Creative Commons
Francesca Mocci,

Leon Engelbrecht,

Chiara Olla

et al.

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(16), P. 13709 - 13799

Published: Aug. 10, 2022

Carbon nanodots (CNDs) are the latest and most shining rising stars among photoluminescent (PL) nanomaterials. These carbon-based surface-passivated nanostructures compete with other related PL materials, including traditional semiconductor quantum dots organic dyes, a long list of benefits emerging applications. Advantages CNDs include tunable inherent optical properties high photostability, rich possibilities for surface functionalization doping, dispersibility, low toxicity, viable synthesis (top-down bottom-up) from materials. can be applied to biomedicine imaging sensing, drug-delivery, photodynamic therapy, photocatalysis but also energy harvesting in solar cells as LEDs. More applications reported continuously, making this already research field its own. Understanding requires one go levels electrons, atoms, molecules, at different scales using modern molecular modeling correlate it tightly experiments. This review highlights silico techniques studies, chemistry mesoscale, particular reference carbon nanodots, carbonaceous nanoparticles whose structural photophysical not fully elucidated. The role experimental investigation is presented. Hereby, we hope encourage reader investigate apply virtual obtain further insights needed customize these amazing systems novel prospective

Language: Английский

Yellow‐Emissive Carbon Dots with High Solid‐State Photoluminescence DOI
Jiazhuang Guo,

Yushuang Lu,

An‐Quan Xie

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(20)

Published: Feb. 9, 2022

Abstract Carbon dots (CDs) present an enticing prospect for a variety of optical applications relying on their high photoluminescence (PL) quantum yield (QY). Herein, the synthesis, properties, structural characterizations, density‐functional theory (DFT) calculations, and potential yellow‐emissive CDs (Y‐CDs) with ultra‐high PL QY are reported. Solvothermal treatment citric acid urea in toluene, followed by column chromatography, produces Y‐CDs exhibiting excitation‐independent emission at 553 nm solution 92%. A characterizations DFT theoretical calculations implemented to confirm general structure fluorescence origin Y‐CDs, conjugated sp 2 ‐carbon domains (fused rings) edge groups. Significantly, transparent Y‐CDs/acrylic resin films strong solid‐state emissions fabricated. The Y‐CD exhibit 98%, good stability (no variation under continuous irradiation 180 h), large Stokes shift (129 nm). luminescent solar concentrators as well yellow phosphors lighting also demonstrated. These findings thus promote development high‐performance optoelectronic applications.

Language: Английский

Citations

169
On the Emission Properties of Carbon Dots: Reviewing Data and Discussing Models DOI Creative Commons
Carlo Maria Carbonaro, Riccardo Corpino, M. Salis

et al.

C – Journal of Carbon Research, Journal Year: 2019, Volume and Issue: 5(4), P. 60 - 60

Published: Oct. 2, 2019

The emission properties of carbon dots (CDs) have already found many potential applications, from bio-imaging and cell labelling, to optical imaging drug delivery, are largely investigated in technological fields, such as lighting photonics. Besides their high efficiency emission, CDs also virtually nontoxic can be prepared through green chemistry routes. Despite these important features, the very origin luminescence is still debated. In this paper, we present an overview sounding data main models proposed explain tunability.

Language: Английский

Citations

159
Multicolor carbon dots with concentration-tunable fluorescence and solvent-affected aggregation states for white light-emitting diodes DOI
Fanyong Yan,

Yingxia Jiang,

Xiaodong Sun

et al.

Nano Research, Journal Year: 2019, Volume and Issue: 13(1), P. 52 - 60

Published: Dec. 4, 2019

Language: Английский

Citations

156
A review on advancements in carbon quantum dots and their application in photovoltaics DOI Creative Commons
Pawan Kumar, Shweta Dua, Ravinder Kaur

et al.

RSC Advances, Journal Year: 2022, Volume and Issue: 12(8), P. 4714 - 4759

Published: Jan. 1, 2022

This review puts forth the in-depth understanding of fundamentals carbon quantum dots(CQDs), recent advancements in field including a thorough discussion on different roles CQDs to enhance performance solar cells and white-LEDs.

Language: Английский

Citations

155
Tunable fluorescent carbon dots from biowaste as fluorescence ink and imaging human normal and cancer cells DOI
Raji Atchudan, Somasundaram Chandra Kishore, Prakash Gangadaran

et al.

Environmental Research, Journal Year: 2021, Volume and Issue: 204, P. 112365 - 112365

Published: Nov. 9, 2021

Language: Английский

Citations

153
Carbon Dots as Nano-Organocatalysts for Synthetic Applications DOI
Cristian Rosso, Giacomo Filippini, Maurizio Prato

et al.

ACS Catalysis, Journal Year: 2020, Volume and Issue: 10(15), P. 8090 - 8105

Published: June 30, 2020

Over the last decades, organic chemistry has taken a resolute step toward green catalytic synthesis. This tries to ensure efficient and sustainable base chemical production, while also safeguarding human health environment. To this end, development of novel, nontoxic, effective systems that are capable driving value-added transformations in environmentally benign solvents (e.g., water) is highly desirable. Moreover, these new catalysts need be metal-free, easy-to-prepare, potentially recyclable. Carbon dots, which relatively carbon-based nanoparticles, fulfill all requirements because their outstanding physicochemical features thus have emerged as promising nanocatalytic platforms. Perspective highlights recent advances synthesis carbon dots applications catalysis photocatalysis, with particular attention nonmetal-doped systems. Finally, forward-looking opportunities within field mentioned here.

Language: Английский

Citations

144
Properties and application of carbon quantum dots (CQDs) in biosensors for disease detection: A comprehensive review DOI
Mehrab Pourmadadi,

Erfan Rahmani,

Maryam Rajabzadeh‐Khosroshahi

et al.

Journal of Drug Delivery Science and Technology, Journal Year: 2023, Volume and Issue: 80, P. 104156 - 104156

Published: Jan. 4, 2023

Language: Английский

Citations

132
Zero-Dimensional Carbon Nanomaterials for Fluorescent Sensing and Imaging DOI
Zheng Yang, Tiantian Xu, Hui Li

et al.

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 11047 - 11136

Published: Sept. 7, 2023

Advances in nanotechnology and nanomaterials have attracted considerable interest play key roles scientific innovations diverse fields. In particular, increased attention has been focused on carbon-based exhibiting extended structures unique properties. Among these materials, zero-dimensional structures, including fullerenes, carbon nano-onions, nanodiamonds, dots, possess excellent bioaffinities superior fluorescence properties that make suitable for application to environmental biological sensing, imaging, therapeutics. This review provides a systematic overview of the classification structural properties, design principles preparation methods, optical sensing applications nanomaterials. Recent interesting breakthroughs sensitive selective imaging heavy metal pollutants, hazardous substances, bioactive molecules as well information encryption, super-resolution photoacoustic phototherapy nanomedicine delivery are main focus this review. Finally, future challenges prospects materials highlighted envisaged. presents comprehensive basis directions designing, developing, applying fascinating fluorescent sensors fabricated based specific requirements numerous research

Language: Английский

Citations

123
Investigating the effect of N-doping on carbon quantum dots structure, optical properties and metal ion screening DOI Creative Commons
Kiem G. Nguyen, Ioan-Alexandru Bărăgău,

Radka Gromicova

et al.

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: Aug. 15, 2022

Carbon quantum dots (CQDs) derived from biomass, a suggested green approach for nanomaterial synthesis, often possess poor optical properties and have low photoluminescence yield (PLQY). This study employed an environmentally friendly, cost-effective, continuous hydrothermal flow synthesis (CHFS) process to synthesise efficient nitrogen-doped carbon (N-CQDs) biomass precursors (glucose in the presence of ammonia). The concentrations ammonia, as nitrogen dopant precursor, were varied optimise CQDs. Optimised N-CQDs showed significant enhancement fluorescence emission with PLQY 9.6% compared pure glucose derived-CQDs (g-CQDs) without doping which less than 1%. With stability over pH range 2 11, excellent sensitivity nano-sensor highly toxic highly-pollutant chromium (VI), where (PL) quenching was observed. optimised nitrogen-doping demonstrated effective tuning overall electronic structure resulting enhanced performance nano-sensor.

Language: Английский

Citations

120
Carbon Dots as Promising Tools for Cancer Diagnosis and Therapy DOI Open Access
Giuseppe Nocito, Giovanna Calabrese, Stefano Forte

et al.

Cancers, Journal Year: 2021, Volume and Issue: 13(9), P. 1991 - 1991

Published: April 21, 2021

Carbon Dots (CDs) are the latest members of carbon-based nanomaterials, which since their discovery have attracted notable attention due to chemical and mechanical properties, brilliant fluorescence, high photostability, good biocompatibility. Together with ease affordable preparation costs, these intrinsic features make CDs most promising nanomaterials for multiple applications in biological field, such as bioimaging, biotherapy, gene/drug delivery. This review will illustrate recent biomedical focusing on biocompatibility, low cytotoxicity, cellular uptake, theranostic properties highlight above all usefulness a tool cancer diagnosis therapy.

Language: Английский

Citations

119