Photosensitive Functionalized Surface‐Modified Quantum Dots for Polymeric Structures via Two‐Photon‐Initiated Polymerization Technique

Krini, Redouane; Ha, Cheol Woo; Prabhakaran, Prém; Mard, Hicham El; Yang, Dong‐Yol; Zentel, Rudolf; Lee, Kwang-Sup

doi:10.1002/marc.201500045

Cited by 31 publications

(27 citation statements)

References 33 publications

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“…One approach often taken is the addition of functional nanoparticles or its precursors into the photoresist, which then get incorporated into the structure during photopolymerization. Structures with magnetic, [20-22] luminescence, [23-25] and electrical [26-30] properties can be fabricated in this fashion. While simple, a common drawback with this method is that agglomeration of these particles interferes with the ability of the laser to penetrate into the resin, limiting the doping concentration of these nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Functionalized 3D Architected Materials via Thiol‐Michael Addition and Two‐Photon Lithography

et al. 2017

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Graphical abstract A facile method of fabricating functionalized 3D architected materials is achieved by using functionalized acrylates synthesized via thiol-Michael addition, which are then polymerized using two-photon lithography. A wide variety of functional groups can be attached, from Boc-protected amines to fluoroalkanes. Modification of surface wetting properties and conjugation with fluorescent tags are demonstrated to highlight the potential applications of this technique.

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Section: Introductionmentioning

confidence: 99%

Functionalized 3D Architected Materials via Thiol‐Michael Addition and Two‐Photon Lithography

et al. 2017

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“…e,f) SEM images of 3D lithography fabricated microstructure of QD‐polymer composites, g) red confocal fluorescence image of the microstructure. Reproduced with permission . Copyright 2015, Wiley‐VCH.…”

Section: Micropatterning Of Qd Compositesmentioning

confidence: 99%

Composite Structures with Emissive Quantum Dots for Light Enhancement

Smith

Lin

et al. 2018

Advanced Optical Materials

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The optical properties of these nanostructures can be controlled via precise control of the synthetic parameters resulting in a wide range of chemical compositions, shapes, and dimensions. QDs are quite advantageous in comparison to traditional organic dye counterparts, offering size, and composition dependent energy band gaps (i.e., tunable absorption and photoluminescence), prospective excellent photostability, and solution and aqueous processability based on choice of surface chemistries. [2] Intense research in this field in the past two decades has focused on precisely engineering core-shell composition of QD nanostructures resulting in an appreciable impact on the field of photonic materials and structures to develop composite nanomaterials with precise control of refractive index, permittivity, and permeability.QDs are the promising candidate to control interactions in photonic systems in many respects due to their enhanced photostability, near 100% quantum yield, and versatile surface chemistry. More recently, facile synthetic techniques for large-scale high-quality production have been introduced that involve wet chemical processes to expand applicability of these components in light-managements devices. [5][6][7] However, the overall processability and scalability of these components into robust large-area structures are still a critical concern limiting real-life implementation in robust designs. While there are many techniques to produce QDs, common limitations for this class of nanomaterials are low quantity, large dispersibility in size, compositional nonuniformity, and the presence of excess passive components resulting from wet chemistry synthetic procedures (e.g., ligands).Providing a convenient host matrix not only overcomes some of these common limitations but allows for QDs to be used in more technologically exploitable forms such as robust, flexible, mechanically and chemically stable fibers, coatings, films, and patterns. [8] For such composite systems, inclusion of nanoparticles into sophisticated matrices typically results in the significant improvements of thermal, mechanical, electrical, and optical stabilities making them more applicable in device environment than other traditional organic materials.While the concept of embedding various nanostructures into different surrounding materials is not new, synthetic techniques required to combine these can be rather complex. Most Since their inception, quantum dots have proven to be advantageous for light management applications due to their high brightness and wellcontrolled absorption, scattering, and emission properties. As quantum dots become commercially available at large scale, the need for robust, stable, and flexible optical components continues to drive the development of robust and flexible quantum dot composite materials. In this review, after a thorough introduction to quantum dots, discussion delves into methods for fabricating quantum dot loaded composite optical elements such as thin films, microfabricated patterns, and micros...

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“…Quantum dots (QDs) are ideal materials with nanometer size, and low size distribution to produce unique electronic and optical properties, resulting in their multiple applications in fields. Based on the choice of QDs with tuned size distribution and the narrow photoluminescence emission profiles, which shift predictably with size, quantum dots are especially promising candidates to give high‐quality samples as current synthetic methods . Since the first proposal of CdSe QDs synthesis in a simple colloidal route with high quality in 1993, intensive studies have been devoted to the synthesis of high fluorescence CdSe QDs .…”

Section: Introductionmentioning

confidence: 99%

A Versatile Synthetic Approach to Covalent Binding of Polymer Brushes on CdSe/CdS Quantum Dots Surface: Multitype Modification of Nanocrystals

Guan

Fan

Jia

et al. 2016

Macromol. Chem. Phys.

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A novel and versatile approach to the preparation of multitype polymers brushes on the quantum dots surface is reported. In this method, an azo initiator is fi rst immobilized covalently onto CdSe/CdS particle surface by reacting with the 4,4′-Azobis (4-cyanovaleric acid) through an ester linkage. CdSe/CdS nanoparticles with polymer brushes (CdSe/CdS-polymers) of different properties, including hydrophilic polyacrylamide, poly(acrylic acid), and poly(vinyl pyrrolidone); hydrophobic oleophilic poly(vinyl acetate), poly(methyl acrylate), and poly(methyl methacrylate); polystyrene with conjugate group; and polyacrylonitrile with strong polarity group, are synthesized by one approach (the surface-initiated radical poly merization technique), respectively. The structures and properties of CdSe/CdS-polymers reveal that the CdSe/CdS-azo initiator has excellent ability to initiate various kinds of vinyl monomers and these synthetic CdSe/CdS-polymers exhibit good stability and can emit multiple colors from the emission 405 to 569 nm. Moreover, CdSe/ CdS-polymers brushes show characteristic micromorphologies. Such strategy provides a platform to achieve nanocomposites with different properties by a new CdSe/CdS-azo initiator through the simple conventional radical polymerization technique. Besides, the synthetic approach gives access to multitype modifi cation of different nanoparticles with polymers.

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Photosensitive Functionalized Surface‐Modified Quantum Dots for Polymeric Structures via Two‐Photon‐Initiated Polymerization Technique

Cited by 31 publications

References 33 publications

Functionalized 3D Architected Materials via Thiol‐Michael Addition and Two‐Photon Lithography

Functionalized 3D Architected Materials via Thiol‐Michael Addition and Two‐Photon Lithography

Composite Structures with Emissive Quantum Dots for Light Enhancement

A Versatile Synthetic Approach to Covalent Binding of Polymer Brushes on CdSe/CdS Quantum Dots Surface: Multitype Modification of Nanocrystals

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