Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Guidelli, Éder José; Lignos, Ioannis; Yoo, Jason J.; Lusardi, Marcella; Bawendi, Moungi G.; Baffa, Oswaldo; Jensen, Klavs F.

doi:10.1021/acs.chemmater.8b03587

Cited by 36 publications

(26 citation statements)

References 82 publications

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“…此外, 微流控技术已经广泛应用于无机非金属材料的合成、反应条件的优化以及反应动力学的机理研究等方面 [96][97][98] . 量子点(quantum dots, QDs)是一种尺寸小于或相当于其激子波尔半径且形貌近似各向同性的半导体纳米晶体, 具有光学性能可调、可溶、高光致发光、高光谱纯度及高光化学稳定性等独特性能 [99] .…”

Section: 无机材料主要包括金属材料和无机非金属材料两大类unclassified

Research Progress of Microfluidic Technique in Synthesis of Micro/Nano Materials

Lu¹,

Wang²,

Pan³

et al. 2021

Acta Chimica Sinica

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Micro/nano materials have unique properties that are different from macro materials because of their small scale, and these materials have diverse applications in many fields. In recent years, with the unique advantages of low consumption, high efficiency, high throughput, miniaturization, integration and automation, microfluidic technique has aroused widespread concerns in the synthesis field of micro/nano materials. In this review, the commonly used microreactors are classified from two perspectives of structural form and reaction method, and the application of microfluidic technique in the synthesis of micro/nano materials including inorganic materials, organic materials and composite materials are introduced. In addition, the main development trends in the future are prospected in this review. Microfluidic technique has provided new ideas and methods for the synthesis of micro/nano materials, which has rich possibilities and great potentials in both industrial production and academic research.

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Section: 无机材料主要包括金属材料和无机非金属材料两大类unclassified

Research Progress of Microfluidic Technique in Synthesis of Micro/Nano Materials

Lu¹,

Wang²,

Pan³

et al. 2021

Acta Chimica Sinica

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“…[123] Copyright 2013, American Chemical Society), C) I) Schematic of the single precursor (nuclei) source synthesis of ZnSe QDs in flow by Guidelli et al, II) ZnSe QD PLQY as a function of residence time (reproduced with permission. [124] Copyright 2018, American Chemical Society). D) I) Microfabricated ITO-glass reactor for the continuous synthesis of AgInS 2 QDs by Ma et al, and II) optimum growth temperatures for controlled growth and increased PLQY obtained from in-situ obtained fluorescence spectra (reproduced with permission.…”

Section: Chalcogenidesmentioning

confidence: 99%

“…Microfluidic reactors have not only been used to empirically validate existing nanocrystal growth theories, but also to gain new insight into emerging MC QDs kinetics. Guidelli et al, [124] using a pressurized heated stainless-steel tube microfluidic reactor ( Figure 5C-I), synthesized zinc selenide (ZnSe) QDs in flow. ZnSe is a promising alternative to toxic Cd-and Pb-based QDs which exhibits good stability under harsh environmental conditions.…”

Section: Chalcogenidesmentioning

confidence: 99%

Microfluidic Synthesis of Semiconductor Materials: Toward Accelerated Materials Development in Flow

Campbell

Bateni

Volk

et al. 2020

Part & Part Syst Charact

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Semiconductors are intriguing due to their unique electrical properties, particularly the behavior of their electrons in the presence of different stimuli (e.g., electric field, magnetic field, light irradiation), which differ greatly from conducting (i.e., metals) and insulating materials. In insulators and semiconductors, the available electronic states are discontinuous, with the existence of a gap between the lower energy states, commonly referred to as the valence band (VB), and the higher energy states, known as the conduction band (CB). The distinguishing factor between these materials is the size of the energy difference between the highest energy state in the VB and the lowest energy state in the CB, called the band gap. In insulators, the band gap is very large, making it difficult, if not impossible, to cause an electron to move from the VB to the CB. By comparison, semiconductors possess narrow to moderate band gaps, implying that it is possible to introduce enough energy to an electron to cause it to move from the VB to the CB, enabling electron transfer, the use of high energy electrons, or the emission of energy (i.e., photons) when the electron returns from the CB to the VB. The wide range of industrial application-specific requirements demands versatility in the target characteristics of semiconductor materials (e.g., size, morphology, composition, band gap, emission wavelength), which are vastly different from those commonly used in thin-film transistors. Typically, the semiconductor materials synthesized for use in the above applications are particulate materials produced across a range of sizes spanning five orders of magnitude (from just a few nm to hundreds of µm), and can be divided into two overarching categories, nano-and microsized particulate materials. Nanosized semiconductor materials, due in large part to their miniscule dimensions, present a variety of intriguing characteristics not observed in microsized semiconductor particles. First and foremost, if the dimensions of the semiconductor material decrease below a certain threshold known as the Bohr radius, the absorption and emission energies become highly dependent on the particle size, a phenomenon known as quantum confinement. [28-30] Moreover, nanosized structures have significantly larger surface-to-volume ratios which increases the surface contribution to the total free energy of the semiconductor materials, making them highly soluble [29] and therefore much easier to process and handle. Thus far, nanosized semiconductor particles have been effectively utilized in sensors, [7] LEDs, [9] Controlled synthesis of semiconductor nano/microparticles has attracted sub stantial attention for use in numerous applications from photovoltaics to photo catalysis and bioimaging due to the breadth of available physicochemical and optoelectronic properties. Microfluidic material synthesis strategies have recently been demonstrated as an effective technique for rapid development, controlled synthesis, and continuous manufacturing of solutionpr...

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“…The preparation of QDs products by continuous processing of microfluidic devices has aroused great interest because of the precision in controlling the parameters such as the injection speed and synthesis size (Baek, Allen, Bawendi, & Jensen, ; Baek, Shen, Lignos, Bawendi, & Jensen, ; Guidelli et al, ; Jahn et al, ; Marre & Jensen, ; Moghaddam, Baghbanzadeh, Sadeghpour, Glatter, & Kappe, ; Song, Tice, & Ismagilov, ). In order to ensure the reaction efficiency, the mixing modules are designed into winding microchannels and bifurcate microchannels.…”

Section: Quantum Dots From Microfluidicsmentioning

confidence: 99%

Quantum dots from microfluidics for nanomedical application

Bian

Sun

Cai

et al. 2019

WIREs Nanomed Nanobiotechnol

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Nanomedicine, with its advantages of rapid diagnosis, high sensitivity and high accuracy, has aroused extensive interest of researchers, as the cornerstone of nanomedicine, nanomaterials achieve extra attention and rapid development.Among nanomaterials, quantum dots stand out due to their long fluorescence lifetime and excellent antiphotobleaching performance. At present, quantum dots have been applied to the diagnosis and treatment of diseases and various strategies have been presented to fabricate quantum dots. Microfluidic is one promising strategy since microfluidic device can provide an effective platform for the diagnosis of trace disease markers. In this paper, research progress in the microfluidic synthesis of quantum dots and quantum dot-based nanomedical application is discussed. The classification of quantum dots is firstly introduced, and the researches on quantum dots synthesis based on microfluidic is then mainly described, including the sort, design, preparation of microfluidic synthesis device and its application in synthesis.Nanomedical applications of the quantum dots is especially described and emphasized. The prospects for future development of quantum dots from microfluidic for nanomedical application are finally presented. This article is categorized under:Diagnostic Tools > in vitro Nanoparticle-Based Sensing K E Y W O R D S biomedical application, microfluidic, nanomedicine, quantum dot

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Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Cited by 36 publications

References 82 publications

Research Progress of Microfluidic Technique in Synthesis of Micro/Nano Materials

Research Progress of Microfluidic Technique in Synthesis of Micro/Nano Materials

Microfluidic Synthesis of Semiconductor Materials: Toward Accelerated Materials Development in Flow

Quantum dots from microfluidics for nanomedical application

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