Smart Photonic Crystal Hydrogel Material for Uranyl Ion Monitoring and Removal in Water

Xiao, Fubing; Sun, Yongfang; Du, Wenwen; Shi, Wenhui; Wu, Yan; Liao, Shuzhen; Wu, Zhaoyang; Yu, Ru‐Qin

doi:10.1002/adfm.201702147

Cited by 101 publications

(43 citation statements)

References 40 publications

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“…Some porous materials such as porous organic polymers (POPs) 7 , metal-organic frameworks (MOFs) 8 , and hydrogels 4 have been developed for this purpose. However, the performance of amorphous POPs is affected by its irregular pores, burying a large fraction of porosity 9 , and hindering fast mass transfer needed for real-time response 10 .…”

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confidence: 99%

Regenerable and stable sp2 carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium

et al. 2020

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Uranium is a key element in the nuclear industry, but its unintended leakage has caused health and environmental concerns. Here we report a sp 2 carbon-conjugated fluorescent covalent organic framework (COF) named TFPT-BTAN-AO with excellent chemical, thermal and radiation stability is synthesized by integrating triazine-based building blocks with amidoxime-substituted linkers. TFPT-BTAN-AO shows an exceptional UO 2 2+ adsorption capacity of 427 mg g −1 attributable to the abundant selective uranium-binding groups on the highly accessible pore walls of open 1D channels. In addition, it has an ultra-fast response time (2 s) and an ultra-low detection limit of 6.7 nM UO 2 2+ suitable for on-site and real-time monitoring of UO 2 2+ , allowing not only extraction but also monitoring the quality of the extracted water. This study demonstrates great potential of fluorescent COFs for radionuclide detection and extraction. By rational designing target ligands, this strategy can be extended to the detection and extraction of other contaminants.

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confidence: 99%

Regenerable and stable sp2 carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium

et al. 2020

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“…Xiao et al monitored and removed the uranyl ion (UO 2 2+ ) simultaneously by integrating the SiO 2 arrays with the hydrogel full of amide sites. The lowest detectable concentration for UO 2 2+ is 10 × 10 −9 m , and the maximum adsorption capacity at 298 K is 169.67 mmol kg −1 . Moirangthem et al fabricated a cholesteric liquid crystalline (CLC) polymer film, in which the benzoic acid metal binding sites selectively monitored Ca 2+ of the concentration from 10 −4 to 10 −2 m in the blood .…”

Section: Emerging Optical Applications Of Ordered Micro/nanostructuresmentioning

confidence: 99%

Ordered Hybrid Micro/Nanostructures and Their Optical Applications

Zhang

Yang

2019

Advanced Optical Materials

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known that the optical properties related refractive index is an important parameter for ordered micro/nanostructures. Commonly, organic substances own lower refraction. Aiming at improving which, researchers introduce highly polarizable heteroatoms or rigid aromatic moieties. However, the maximum of refractive index is limited to 1.54-1.60, [3] which is far from the requirements of rapidly developing technologies. [4] Incorporation of inorganic materials with relative higher refractive index (TiO 2 , ZnO, ZnS, graphene nanoparticles, and Si) into an organic matrix is capable of enlarging the optical parameters to a great extent, generally up to a value of 2.5-3.0, [5] which offers more chances for the fabrication of novel ordered micro/nanostructures. Photonic crystals (PCs), for example, regularly arrange materials of high and low dielectric constants on the order of the wavelength of light. The photonic bandgap (PBG) prohibiting the propagation of light results from the sufficient dielectric contrast and appropriate geometry. The structural color therefore generates. Manipulating the propagation of light via micro/nanostructures meets the requirements for modern optical devices. [6] As a result, more efforts have been applied to devices consisting of micro/nanostructures of multiple materials, such as synthetic materials and biomaterials. [7] Besides optical properties, the strength and toughness of ordered micro/nanostructures are also improved based on the hybrid material. Meanwhile, the electric and magnetic features of inorganic dopants can also exactly assist the adjustability. Therefore, the hybrid can significantly improve performance compared with its constituent.This review emphasizes on applications sought (sensing, imaging, communication, photoelectricity, etc.), the materials used (silicon, metals, polymers, etc.), and the preparation methods employed (patterning, etching, deposition, etc.). We present an attempt to classify and compare some intensively reported micro/nanostructures of hybrid materials and/or heterogeneous structures, along with recent important developments in literatures. It is organized as follows: First, we summarize some fundamental physical principles and concepts in brief. Second, we particularly highlight artificial and natural laminar structures, represented by Bragg stacks (BSs) and butterfly wings, which have drawn much attention in the latest literatures. Next, the focus shifts to the preparation routes and materials adoption of colloidal crystals and their derived periodic arrays. A few examples of highly functional materials Recent advances in manufacturing and technology of ordered hybrid micro/ nanostructures have acquired many breakthroughs. With the aid of the cooperation of various materials, the ordered hybrid micro/nanostructures exhibit high-quality performance and mechanical stability and allow the modulation on the light-matter interaction in a controllable manner, thereby enabling a wide variety of innovative applications. This article reviews recent deve...

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“…Among various solid‐state sensing materials, flexible fluorescent hydrogel films are attracting increasing attention in recent years . This is because hydrogels are hydrophilic, water swellable polymer networks that can allow efficient diffusion of water‐soluble pollutants into the hydrogel matrix .…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Hydrogel‐Coated Paper/Textile as Flexible Chemosensor for Visual and Wearable Mercury(II) Detection

Zhang

Lü

et al. 2018

Adv Materials Technologies

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Hg 2+ pollution in seafood, grain, and even drinking water especially in many industrial districts. [1][2][3][4] Therefore, it is of great urgency to develop facile and effective sensing apparatus to discriminate Hg 2+polluted food and water samples. For this purpose, a large amount of powerful electric, colorimetric, and fluorescent Hg 2+ chemosensors have been developed over the past decades. [5][6][7][8][9][10][11][12][13][14][15] Nevertheless, most of these Hg 2+ -sensing studies, despite state-of-the-art, are primarily based on solution phase. For practical infield applications, solid-state sensing materials are more attractive as they can provide operational simplicity, portability, and good stability. [16][17][18][19][20][21][22][23][24][25][26][27] Among various solid-state sensing materials, flexible fluorescent hydrogel films are attracting increasing attention in recent years. [28][29][30][31][32][33][34][35][36][37][38][39][40][41] This is because hydrogels are hydrophilic, water swellable polymer networks that can allow efficient diffusion of water-soluble pollutants into the hydrogel matrix. [42][43][44][45][46][47][48][49] Moreover, their chemical and physical properties could be finely tuned via proper molecular design in order to further enhance their binding affinity for targeted molecules. Therefore, these flexible hydrogel chemosensors can address the restricted detection sensitivity caused by hindered and slow diffusion of aqueous testing samples inside conventional hydrophobic, dense sensing films, thus generating higher In some industrial districts, abuse discharge of waste water has resulted in serious Hg 2+ pollution in seafood, grain, and even drinking water. In order to protect people from mercury(II)-polluted food and water, many solid-state fluorescent Hg 2+ -sensing materials are developed in terms of facile operation. However, one primary challenging issue is the restricted sensitivity caused by hindered slow diffusion of aqueous testing samples inside these conventional hydrophobic, dense, and rigid film materials. Herein, robust hydrophilic fluorescent hydrogel-coated flexible paper/textile film chemosensors are reported. Their design relies on a specific chemical reaction between Hg 2+ and the grafted thiourea moieties to induce remarkable "green-to-blue" emission color change. Thanks to their hierarchical porous structures fixed by interwoven paper/textile fibers, these flexible chemosensors allow fast capillary-force-driven mercury(II) diffusion into the hydrophilic hydrogel matrix, thus enabling visual detection of nearly nM-level Hg 2+ . On this basis, robust fluorescent hydrogel-coated wearable sensing gloves are fabricated for the first time, which significantly facilitate infield visual detection and effectively protect operators far from the toxic Hg 2+ -polluted samples. These developed flexible wearable sensing systems might not only hold great potential applications in mercury(II) detection, but also inspire the development of nextgeneration sensing apparatus for other...

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Smart Photonic Crystal Hydrogel Material for Uranyl Ion Monitoring and Removal in Water

Cited by 101 publications

References 40 publications

Regenerable and stable sp2 carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium

Regenerable and stable sp2 carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium

Ordered Hybrid Micro/Nanostructures and Their Optical Applications

Fluorescent Hydrogel‐Coated Paper/Textile as Flexible Chemosensor for Visual and Wearable Mercury(II) Detection

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