Carbon quantum dots: an emerging material for optoelectronic applications

Yuan, Ting; Tao, Meng; He, Ping; Shi, Yuxin; Li, Yunchao; Li, Xiaohong; Fan, Louzhen; Yang, Shihe

doi:10.1039/c9tc01730e

Cited by 276 publications

(154 citation statements)

References 121 publications

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“…The CQDs are prepared by the bottom-up approach to obtain high emission efficiency. 25 Detailed synthetic procedures and characterization data for precursors and CQDs can be found in experimental section and ESI †. Hereby, we employed a hydrothermal treatment of alkaline solution to synthesize the CQDs due to its facility and effectiveness.…”

Section: Design and Synthesismentioning

confidence: 99%

Nitrogen and sulphur co-doped carbon quantum dots and their optical power limiting properties

Zhu

Wang

et al. 2020

Mater. Adv.

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Section: Design and Synthesismentioning

confidence: 99%

Nitrogen and sulphur co-doped carbon quantum dots and their optical power limiting properties

Zhu

Wang

et al. 2020

Mater. Adv.

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“…In addition, drug delivery applications were proposed, exploiting the easy surface functionalization of CDs' surface [23,25,26]. All these applications take advantage of two quite unusual optical properties: a quite large Stokes shift (on average larger than 100 nm if we consider near UV excitation around 350 nm and the blue emission) and an excitation wavelength dependent peak position, allowing tuning of the emission from blue to red across the whole visible spectral range [4,27,28]. These properties strongly depend on the synthesis conditions, and several factors can affect the optical properties of CDs, including the synthesis technique, the chosen precursors or starting materials, the post-synthesis treatments, time and temperature of the synthesis, surface functionalization or passivation, and heteroatom doping.…”

Section: Introductionmentioning

confidence: 99%

On the Emission Properties of Carbon Dots: Reviewing Data and Discussing Models

et al. 2019

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

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“…Immense interest has been shown in the development of fluorescent materials due to their promising and diverse applications, ranging from optoelectronics to biology, especially in the rapidly growing bionanotechnology field . Among the fluorescent materials, conjugated polymers have attracted great attention due to their unique fluorescent emission, adjustable electronic properties and extensively tunable electrical conductivities between insulators and metals while maintaining light weight, mechanical flexibility, low temperature processing, stability and good processability of polymers .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel fluorescent molecule and its polymeric form with aniline as fluorescent and supercapacitor electrode materials

Karri

Ega

Srinivasan

2020

Polymers for Advanced Techs

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In this study, a fluorescent material, 2-naphthyl-4-amino benzoate, is synthesized by the esterification of 4-aminobenzoic acid with 2-naphthol. This molecule is used in the bulk polymerization of aniline, which results in the formation of poly(aniline-2-naphthyl-4-aminobenzoate). For comparison, polyaniline and also poly(aniline-4-aminobenzoic acid) salts are prepared via bulk polymerization. Formation and properties of these polymeric materials are evaluated by Fourier-transform infrared (FT-IR), 13 C nuclear magnetic resonance, matrix-assisted laser desorption ionization, UV-Vis, Fluorescence, X-ray diffraction (XRD), Field emission-scanning electron microscopy (FE-SEM), Differential scanning calorimetry (DSC), thermogravimetric analysis, electrical resistance and electrochemical techniques. P(ANI-2NA4ABA) is obtained in nanofiber morphology in 106 wt% yield with respect to the amount of aniline used with comparable conductivity of conventional polyaniline salts. This polymer salt is stable up to 220 C and indicates melting at 146 C on heating and crystal formation at 128 C on cooling. This polymer shows higher wavelength fluorescence compared to the conventional polyaniline salts. This polymer is used as an electrode material without binder, which shows a specific capacitance of 360 F g −1 at 0.25 A g −1 . K E Y W O R D S 2-naphthyl-4-amino benzoate, electroactive polymer, fluorescent polymer, melt and crystallization points, poly(aniline-2-naphthyl-4-aminobenzoate)

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Carbon quantum dots: an emerging material for optoelectronic applications

Abstract: An overview of the synthesis, optical properties, luminescence mechanism, and optoelectronic applications of CQDs is presented.

Cited by 276 publications

References 121 publications

Nitrogen and sulphur co-doped carbon quantum dots and their optical power limiting properties

Nitrogen and sulphur co-doped carbon quantum dots and their optical power limiting properties

On the Emission Properties of Carbon Dots: Reviewing Data and Discussing Models

Synthesis of novel fluorescent molecule and its polymeric form with aniline as fluorescent and supercapacitor electrode materials

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