Fluorescent magnetic ionic liquids with multi-responses to temperature, humidity and organic vapors

2021 ◽  
Author(s):  
Aixin Song ◽  
Zhaohui Huang ◽  
Mengjiao Yi ◽  
Yue Xu ◽  
Ping Qi ◽  
...  
Keyword(s):  
Optical Properties ◽  
Ionic Liquids ◽  
Functional Materials ◽  
Building Blocks ◽  
Organic Vapors ◽  
Magnetic Ionic Liquids

Organic manganese(II) halides have become attractive building blocks in constructing luminescent functional materials due to their excellent optical properties. Here we presented three magnetic fluorescent ionic liquids (ILs) with [MnClxBry]n‒...

scholarly journals Fluoropolymer-Containing Opals and Inverse Opals by Melt-Shear Organization

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 333 ◽  
Author(s):  
Julia Kredel ◽  
Christian Dietz ◽  
Markus Gallei
Keyword(s):  
Optical Properties ◽  
Optical Sensors ◽  
Matrix Material ◽  
Functional Materials ◽  
Building Blocks ◽  
Core Shell ◽  
Inverse Opal ◽  
Shell Material ◽  
Inverse Opals ◽  
Structural Colors

The preparation of highly ordered colloidal architectures has attracted significant attention and is a rapidly growing field for various applications, e.g., sensors, absorbers, and membranes. A promising technique for the preparation of elastomeric inverse opal films relies on tailored core/shell particle architectures and application of the so-called melt-shear organization technique. Within the present work, a convenient route for the preparation of core/shell particles featuring highly fluorinated shell materials as building blocks is described. As particle core materials, both organic or inorganic (SiO2) particles can be used as a template, followed by a semi-continuous stepwise emulsion polymerization for the synthesis of the soft fluoropolymer shell material. The use of functional monomers as shell-material offers the possibility to create opal and inverse opal films with striking optical properties according to Bragg’s law of diffraction. Due to the presence of fluorinated moieties, the chemical resistance of the final opals and inverse opals is increased. The herein developed fluorine-containing particle-based films feature a low surface energy for the matrix material leading to good hydrophobic properties. Moreover, the low refractive index of the fluoropolymer shell compared to the core (or voids) led to excellent optical properties based on structural colors. The herein described fluoropolymer opals and inverse opals are expected to pave the way toward novel functional materials for application in fields of coatings and optical sensors.

Metal-containing and magnetic ionic liquids in analytical extractions and gas separations

2021 ◽  
Vol 140 ◽  
pp. 116275
Author(s):  
Marcelino Varona ◽  
Philip Eor ◽  
Luiz Carlos Ferreira Neto ◽  
Josias Merib ◽  
Jared L. Anderson
Keyword(s):  
Ionic Liquids ◽  
Gas Separations ◽  
Magnetic Ionic Liquids

scholarly journals Structural and optical properties of amorphous Si–Ge–Te thin films prepared by combinatorial sputtering

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
C. Mihai ◽  
F. Sava ◽  
I. D. Simandan ◽  
A. C. Galca ◽  
I. Burducea ◽  
...  
Keyword(s):  
Optical Properties ◽  
Data Storage ◽  
Optical Sensors ◽  
Material Selection ◽  
Functional Materials ◽  
Stability Study ◽  
Optical Data Storage ◽  
Optical Data ◽  
Structural And Optical Properties ◽  
Topological Constraint

AbstractThe lack of order in amorphous chalcogenides offers them novel properties but also adds increased challenges in the discovery and design of advanced functional materials. The amorphous compositions in the Si–Ge–Te system are of interest for many applications such as optical data storage, optical sensors and Ovonic threshold switches. But an extended exploration of this system is still missing. In this study, magnetron co-sputtering is used for the combinatorial synthesis of thin film libraries, outside the glass formation domain. Compositional, structural and optical properties are investigated and discussed in the framework of topological constraint theory. The materials in the library are classified as stressed-rigid amorphous networks. The bandgap is heavily influenced by the Te content while the near-IR refractive index dependence on Ge concentration shows a minimum, which could be exploited in applications. A transition from a disordered to a more ordered amorphous network at 60 at% Te, is observed. The thermal stability study shows that the formed crystalline phases are dictated by the concentration of Ge and Te. New amorphous compositions in the Si–Ge–Te system were found and their properties explored, thus enabling an informed and rapid material selection and design for applications.

scholarly journals Core-Substituted Naphthalene-diimides (cNDI) and Related Derivatives: Versatile Scaffold for Supramolecular Assembly and Functional Materials

2021 ◽  
Author(s):  
Anurag Mukherjee ◽  
Suhrit Ghosh
Keyword(s):  
Photophysical Properties ◽  
Supramolecular Assembly ◽  
Functional Materials ◽  
Building Blocks ◽  
Short Review ◽  
Molecular Engineering ◽  
Organic Optoelectronics ◽  
Naphthalene Diimide ◽  
Naphthalene Diimides ◽  
Derivatives Of

Naphthalene-diimide (NDI) derived building blocks have been explored extensively for supramolecular assembly as they exhibit attractive photophysical properties, suitable for applications in organic optoelectronics. Core-substituted derivatives of the NDI chromophore (cNDI) differ significantly from the parent NDI dye in terms of optical and redox properties. Adequate molecular engineering opportunities and substitution-dependent tunable optoelectronic properties make cNDI derivatives highly promising candidates for supramolecular assembly and functional material. This short review discusses recent development in the area of functional supramolecular assemblies based on cNDIs and related molecules.

Superhalogens as Building Blocks of Ionic Liquids

2021 ◽  
Vol 125 (10) ◽  
pp. 2146-2153
Author(s):  
Ambrish Kumar Srivastava ◽  
Abhishek Kumar ◽  
Neeraj Misra
Keyword(s):  
Ionic Liquids ◽  
Building Blocks

scholarly journals Amyloid fibril-directed synthesis of silica core–shell nanofilaments, gels, and aerogels

2019 ◽  
Vol 116 (10) ◽  
pp. 4012-4017 ◽  
Author(s):  
Yiping Cao ◽  
Sreenath Bolisetty ◽  
Gianna Wolfisberg ◽  
Jozef Adamcik ◽  
Raffaele Mezzenga
Keyword(s):  
Amyloid Fibril ◽  
Functional Materials ◽  
Building Blocks ◽  
Inorganic Materials ◽  
Core Shell ◽  
Shear Stresses ◽  
Bending Rigidity ◽  
Widespread Application ◽  
Nonmonotonic Dependence ◽  
Silica Core

Amyloid fibrils have evolved from purely pathological materials implicated in neurodegenerative diseases to efficient templates for last-generation functional materials and nanotechnologies. Due to their high intrinsic stiffness and extreme aspect ratio, amyloid fibril hydrogels can serve as ideal building blocks for material design and synthesis. Yet, in these gels, stiffness is generally not paired by toughness, and their fragile nature hinders significantly their widespread application. Here we introduce an amyloid-assisted biosilicification process, which leads to the formation of silicified nanofibrils (fibril–silica core–shell nanofilaments) with stiffness up to and beyond ∼20 GPa, approaching the Young’s moduli of many metal alloys and inorganic materials. The silica shell endows the silicified fibrils with large bending rigidity, reflected in hydrogels with elasticity three orders of magnitude beyond conventional amyloid fibril hydrogels. A constitutive theoretical model is proposed that, despite its simplicity, quantitatively interprets the nonmonotonic dependence of the gel elasticity upon the filaments bundling promoted by shear stresses. The application of these hybrid silica–amyloid hydrogels is demonstrated on the fabrication of mechanically stable aerogels generated via sequential solvent exchange, supercriticalCO2removal, and calcination of the amyloid core, leading to aerogels of specific surface area as high as 993m2/g, among the highest values ever reported for aerogels. We finally show that the scope of amyloid hydrogels can be expanded considerably by generating double networks of amyloid and hydrophilic polymers, which combine excellent stiffness and toughness beyond those of each of the constitutive individual networks.

Anionic dependency of electronic and nonlinear optical properties of ionic liquids

2021 ◽  
pp. 117030
Author(s):  
Fehmi Bardak ◽  
Cemile Bardak ◽  
Caglar Karaca ◽  
Etem Kose ◽  
Sibel Bilgili ◽  
...  
Keyword(s):  
Optical Properties ◽  
Ionic Liquids ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties

scholarly journals Magnetic microemulsions based on magnetic ionic liquids

2012 ◽  
Vol 14 (44) ◽  
pp. 15355 ◽  
Author(s):  
Andreas Klee ◽  
Sylvain Prevost ◽  
Werner Kunz ◽  
Ralf Schweins ◽  
Klaus Kiefer ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Magnetic Ionic Liquids

Capture, Concentration, and Detection of Salmonella in Foods Using Magnetic Ionic Liquids and Recombinase Polymerase Amplification

2018 ◽  
Vol 91 (1) ◽  
pp. 1113-1120 ◽  
Author(s):  
Stephanie A. Hice ◽  
Kevin D. Clark ◽  
Jared L. Anderson ◽  
Byron F. Brehm-Stecher
Keyword(s):  
Ionic Liquids ◽  
Recombinase Polymerase Amplification ◽  
Magnetic Ionic Liquids
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