A bipyridinium-based polyhydrazone adsorbent that exhibits ultrahigh adsorption capacity for the anionic azo dye, direct blue 71

T El Malah, HF Nour, EK Radwan, REA Mageid… - Chemical Engineering …, 2021 - Elsevier
A novel alkyl-functionalized polyviologen-based polymer, 6. nBr, was synthesized via step-
growth polymerization of water soluble bipyridinium dialdehyde 5. 2Br with an alkyl …

Ionic Covalent Organic Framework as a Dual Functional Sensor for Temperature and Humidity

G Das, FA Ibrahim, ZA Khalil, P Bazin, F Chandra… - Small, 2024 - Wiley Online Library
Visual sensing of humidity and temperature by solids plays an important role in the everyday
life and in industrial processes. Due to their hydrophobic nature, most covalent organic …

Versatile hydrochromic fluorescent materials based on a 1, 8-naphthalimide integrated fluorophore-receptor system

Y Ni, Z Sun, Y Wang, HF Nour, ACH Sue… - Journal of Materials …, 2019 - pubs.rsc.org
Atmospheric moisture uptake by materials of varying hygroscopicity can substantially alter
their physicochemical properties and thus has long been a point of interest in the …

Three-state fluorescence hydrochromism of a fluorophore–spacer–receptor system with variations in relative humidity

Y Ni, Y Han, EA Kataev, MA Olson - Chemical Communications, 2022 - pubs.rsc.org
The uptake of atmospheric moisture by hygroscopic materials can have marked effects on a
material's physical and chemical properties. This is true of materials that go on to incorporate …

Iron ore production using a new Gemini surfactant at 273 K

Z Huang, W Li, S Shuai, S Zhang, H Wang… - Chemical …, 2022 - pubs.rsc.org
Herein we present the use of a Gemini surfactant and reverse froth flotation to efficiently
separate magnetite from quartz and produce iron ore at 273 K. This surfactant achieved an …

Mechanistic Analysis of Solid-State Colorimetric Switching: Monoalkoxynaphthalene-Naphthalimide Donor–Acceptor Dyads

CD Wight, Q Xiao, HR Wagner… - Journal of the …, 2020 - ACS Publications
There is growing interest in creating solids that are responsive to various stimuli. Herein we
report the first molecular-level mechanistic picture of the thermochromic polymorphic …

Poly-lipoic ester-based coacervates for the efficient removal of organic pollutants from water and increased point-of-use versatility

Z Zhang, Q Liu, Z Sun, BK Phillips, Z Wang… - Chemistry of …, 2019 - ACS Publications
The increasing frequency with which organic pollutants can be found in global surface water
poses a formidable threat to both our environment and its creatures. While the problem has …

Template-assisted hydrogelation of a dynamic covalent polyviologen-based supramolecular architecture via donor-acceptor interactions

HF Nour, T El Malah, TA Khattab, MA Olson - Materials Today Chemistry, 2020 - Elsevier
A novel polyviologen-based molecular architecture was developed via the step-growth
polymerization of a hydroxyl-substituted aryl dihydrazide with a water soluble viologen …

Main-chain donor-acceptor polyhydrazone mediated adsorption of an anionic dye from contaminated water

HF Nour, T El Malah, EK Radwan, REA Mageid… - Reactive and Functional …, 2021 - Elsevier
A versatile synthetic approach was applied to synthesize a polyviologen (PV. nBr) polymer
via step-growth polymerization of a tetraethylene glycol-linked trinapthyl-based dihydrazide …

Light-controlled aggregation and gelation of viologen-based coordination polymers

S Chowdhury, Q Reynard-Feytis… - The Journal of …, 2021 - ACS Publications
Ditopic bis-(triazole/pyridine) viologens are bidentate ligands that self-assemble into
coordination polymers. In such photo-responsive materials, light irradiation initiates photo …