A highly chromotropic phenacylated dissymmetric bis-viologen and its base-sensing properties

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-03-18 DOI:10.1016/j.molliq.2025.127401

Valentin Silveira , Raffaello Papadakis

引用次数: 0

Abstract

The synthesis and drastic chromic properties of a novel phenacyl-substituted bis-viologen are reported. The aforementioned viologen was proved to undergo reversible deprotonation leading to a highly-chromic compound as a result of the pH-dependent activity of the ketone-enolate system that it encompasses. The deprotonation is feasible through inorganic bases such as sodium hydroxide as well as organic bases e.g. diisopropyl ethylamine. The propensity of the viologen to undergo chromic modifications in solution as well as in solid state is examined. In solution, a negative solvatochromic response is observed and for its quantification, a suitable linear solvation energy relationship (LSER) is employed. Finally, the vapochromic response of the title viologen is qualitatively assessed in powder form as well when absorbed on SiO₂ plates.

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.