Continuous synthesis of CuInS<sub>2</sub> quantum dots

Akdas, Tugce; Haderlein, Michael; Walter, Johannes; Zubiri, Benjamin Apeleo; Spiecker, Erdmann

doi:10.1039/c6ra27052b

Cited by 19 publications

(10 citation statements)

References 59 publications

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“…Besides, microreactors also have a benefit on handling hazardous reactants, such as the cadmium precursors for synthesizing QDs and HAuCl 4 for preparing Au nanoparticles . In addition, microreaction systems are always well sealed; therefore, they are also convenient for watertight or anaerobic reactions, such as the synthesis of indium‐based QDs …”

Section: Engineering Features Of Flow Chemistry System For Nanocrystamentioning

confidence: 99%

Continuous Synthesis of Nanocrystals via Flow Chemistry Technology

Sui

Yan

Liu

et al. 2019

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Modern nanotechnologies bring humanity to a new age, and advanced methods for preparing functional nanocrystals are cornerstones. A considerable variety of nanomaterials has been created over the past decades, but few were prepared on the macro scale, even fewer making it to the stage of industrial production. The gap between academic research and engineering production is expected to be filled by flow chemistry technology, which relies on microreactors. Microreaction devices and technologies for synthesizing different kinds of nanocrystals are discussed from an engineering point of view. The advantages of microreactors, the important features of flow chemistry systems, and methods to apply them in the syntheses of salt, oxide, metal, alloy, and quantum dot nanomaterials are summarized. To further exhibit the scaling‐up of nanocrystal synthesis, recent reports on using microreactors with gram per hour and larger production rates are highlighted. Finally, an industrial example for preparing 10 tons of CaCO3 nanoparticles per day is introduced, which shows the great potential for flow chemistry processes to transfer lab research to industry.

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Section: Engineering Features Of Flow Chemistry System For Nanocrystamentioning

confidence: 99%

Continuous Synthesis of Nanocrystals via Flow Chemistry Technology

Sui

Yan

Liu

et al. 2019

Small

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“…Large scale production Minimize the clogging control over the nucleation and growth stage Expensive [62][63][64][65][66][67][68] The effect of stabilizing ligand on the structure and properties of CIS NCs was studied by Zhong et al [21]. A mixture of CuAc, In(Ac) 3 and dodecanethiol (DDT) was heated with DDT serving as an ideal stabilizing ligand for the synthesis of CIS NCs and with the help of non-coordinating solvent octadecene (ODE).…”

Section: Continuous Flow Reactorsmentioning

confidence: 99%

“…This protocol suffers lack of temperature uniformity between walls and solution, which affects the uniform nucleation and growth. To solve these issues, a new setup known as the continuous flow reactor (CFR), in which the reagents were pumped through the heating zones, was proposed [62,63]. However, this method also led to problems, such as clogging of the reactor and poor material quality.…”

Section: Continuous Flow Reactorsmentioning

confidence: 99%

The Photoluminescence and Biocompatibility of CuInS2-Based Ternary Quantum Dots and Their Biological Applications

Rajendran

Oluwafemi

2020

Chemosensors

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Semiconductor quantum dots (QDs) have become a unique class of materials with great potential for applications in biomedical and optoelectronic devices. However, conventional QDs contains toxic heavy metals such as Pb, Cd and Hg. Hence, it is imperative to find an alternative material with similar optical properties and low cytotoxicity. Among these materials, CuInS2 (CIS) QDs have attracted a lot of interest due to their direct band gap in the infrared region, large optical absorption coefficient and low toxic composition. These factors make them a good material for biomedical application. This review starts with the origin and photophysical characteristics of CIS QDs. This is followed by various synthetic strategies, including synthesis in organic and aqueous solvents, and the tuning of their optical properties. Lastly, their significance in various biological applications is presented with their prospects in clinical applications.

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“…Over the last 20 years, QDs have emerged as innovative materials and gained importance in nanotechnology and nanoscale science. 1−5 On the basis of their elemental composition, QDs can be classified into four major types, namely, group II−VI (e.g., CdSe, 6−9 CdS, 10 CdTe, 11,12 and ZnSe 13 ), group III−V (e.g., InP 14 and InAs 15 ), group I−III−VI (e.g., CuInS 2 16 ), and perovskites (e.g., CsPbX 3 , where X = Cl, Br, I). 17,18 The many advantages of QDs, which include narrow emission, tunable wavelength, high photoluminescence (PL), spectral purity, and photochemical stability, make them promising materials to replace conventional organic dyes.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic Synthesis of Semiconducting Colloidal Quantum Dots and Their Applications

Kubendhiran

Bao²,

Dave

et al. 2019

ACS Appl. Nano Mater.

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The large-scale synthesis of high-quality quantum dots (QDs) for commercial applications, such as lighting, displays, and biomedical devices, is an urgent necessity. Batch reactor systems present a number of problems, such as improper mixing, heating, and reagent addition. Hence, controlling the growth and size of nanocrystals is difficult in this type of system. A number of microfluidic techniques have been developed to enable semiconductor colloidal QD synthesis. The reaction parameters of these techniques are controlled precisely during synthesis. Over the last 16 years, many advancements have been introduced to achieve products similar to those obtained from batch systems. Multiphase flow reactors reduce reactor fouling by using immiscible carrier liquids, which decrease the contact between reagents and the channel wall. Online monitoring of the nanocrystal growth through absorbance and fluorescence spectrometry provides detailed information on the reaction parameters. Chip-based reactors with subchannels decrease backflow and control the addition of reagents. In this review, we discuss all aspects and developments in microfluidic systems for the production and applications of QDs.

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Continuous synthesis of CuInS₂ quantum dots

Abstract: The impact of reactor type on synthesis parameters and disperse properties.

Cited by 19 publications

References 59 publications

Continuous Synthesis of Nanocrystals via Flow Chemistry Technology

Continuous Synthesis of Nanocrystals via Flow Chemistry Technology

The Photoluminescence and Biocompatibility of CuInS2-Based Ternary Quantum Dots and Their Biological Applications

Microfluidic Synthesis of Semiconducting Colloidal Quantum Dots and Their Applications

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Continuous synthesis of CuInS2 quantum dots

Abstract: The impact of reactor type on synthesis parameters and disperse properties.

Cited by 19 publications

References 59 publications

Continuous Synthesis of Nanocrystals via Flow Chemistry Technology

Continuous Synthesis of Nanocrystals via Flow Chemistry Technology

The Photoluminescence and Biocompatibility of CuInS2-Based Ternary Quantum Dots and Their Biological Applications

Microfluidic Synthesis of Semiconducting Colloidal Quantum Dots and Their Applications

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Continuous synthesis of CuInS₂ quantum dots