Alkyne-terminated cyclotriphosphazenes serve as precursors for graphitic materials with tunable properties, controlled through annealing conditions. The results indicate that slow heating produces a ...

Hydrogen (H2(g)) is a viable green fossil fuel alternative, as its combustion yields only water and energy. However, H2(g) is highly flammable, explosive, and lacks odor. These characteristics warrant sensitive and specific detection methods for its widespread use as an alternative fuel source. Recently, there has been growing interest in the development of H2(g) sensors, particularly those that are easy to use, environmentally friendly, and sensitive. Here, we show the first example of an optical fluorogenic hydrogen sensing platform, which employs a readily available dye azomethine-H (Az-H, 4-hydroxy-5-(2-hydroxy-benzylideneamino)-naphthalene-2,7-disulfonic acid) and a hydrogen-transferring compound [{Ir(Cp*)(Cl)}2(thbpym)](Cl)2 (IrCp*, (Cp* = C5Me5–, thbpym = 4,4′,6,6′-tetrahydroxy-2,2′-bipyrimidine)) to engineer H2(g) gas selectivity with high sensitivity at room temperature and pressure. This system yields ∼47–fold fluorescence enhancement when exposed to H2(g) in aqueous solution or ∼2.4–fold in a carboxymethyl cellulose (CMC) hydrogel matrix, with an estimated detection limit of ∼0.5% H2(g) with no cross-reactivity observed for potentially contaminating gases such as nitrogen (N2(g)), oxygen (O2(g)), or air.

Assistant Professor - Dept. of Chemistry & Biochemistry

Abstract Submission Deadline Call for abstracts deadline: Jan. 30, 2025 Submit your abstract How to submit an abstract View the list of sponsors and exhibitors Welcome to CSC 2025, your...

About MSED The Macromolecular Science and Engineering Division (MSED) of the Chemical Institute of Canada is dedicated to promoting the interests of the Canadian polymer science and engineering commun...

This work combines polydiacetylenes with oligosiloxanes for enhanced solubility and processability. The hybrid material showcases reversible thermochromism (25–47 °C) and dual-mode temperature sensin....

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C'est la 12e fois de l'histoire que le Rouge et Or met la main sur la coupe Vanier, décernée aux champions du football universitaire canadien.