Dual‐Mode Fluorescence Sensing of Multiple Oxidizing Analytes by Selective Oxidation of Poly(N‐Phenyl Anthranilic Acid‐Co‐o‐Phenylenediamine) Random Copolymers

Journal of Applied Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

ABSTRACT We report a dual‐mode fluorescence sensing of multi‐analytes like silver and permanganate ions by adopting selective oxidation strategy in poly(N‐phenyl anthranilic acid ‐co‐ o‐phenylenediamine) copolymer. The P(NPA‐ co ‐OPD) copolymers were synthesized situ oxidative chemical polymerization N‐phenyl (NPA) o‐phenylenediamine (OPD) comonomers using ferric chloride as oxidizing agent. Proton ( 1 H) carbon 13 C) nuclear magnetic resonance spectra Fourier transform infrared revealed the higher reactivity NPA compared to OPD copolymers. Monomer ratios calculated from Fineman–Ross method also indicated monomer copolymerization. Powder X‐ray diffractograms differential scanning calorimetry (DSC) thermograms development crystallinity Field emission electron microscopic images (FE‐SEM) high‐resolution transmission (HR‐TEM) morphological transformation semi‐micro‐spherical‐shaped poly‐N‐phenyl micro‐rod‐shaped poly‐o‐phenylenediamine (POPD) into micro‐blocks/microrod‐shaped Poly‐o‐phenylenediamine has yellow emission, (PNPA) blue neutralized medium. was dominated due PNPA fragments than POPD copolymer chain, except for 10:90, which dominant properties 10:90 selectively tuned adding AgNO 3 , indicating semi‐oxidation and, subsequently, colorless acidified KMnO 4 complete both response suggests ability distinguish between mild or strong agents via oxidation.

Язык: Английский

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A simple fluorescent assay for thiocyanate based on Cu2+-triggered oxidation of o-phenylenediamine

Journal of the Iranian Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 20, 2025

Язык: Английский

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One-Step Coordinating POPD in H₃BTB-Sensitized EuMOF-Enabled Tunable Antenna Effects for Fluorescence Turn-On Sensing of Sarin Analogue Vapor

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

The structural modification of metal-organic frameworks (MOFs) is vital importance in many fields, especially sensing with enhanced performance, while the efficient synthesis functionalized MOF nanoparticles toward small molecule detection remains challenging. Here, a general cellulose nanofibril (CNF)-induced situ one-step strategy was proposed for dual-ligand-functionalized europium-based (EuMOF@CNF) under an effective regulation crystallization kinetics hydrothermal synthesis. Based on unique dual-ligand structure, obtained EuMOF featured tunable antenna effect and laid good foundation fluorescence-sensing materials. Benefiting from superior self-assembly properties CNFs EuMOF@CNF, flexible films were constructed, showing excellent mechanical (72 MPa stress 3.8% strain) luminescence achieving instant (1 s) sensitive fluorescence sarin analogue vapor significantly low limit (LOD, 2.8 ppb) robust selectivity against wide range common interferents (>14 types), independent acids. We believe that this pioneering design effects would positively advance development high-performance MOF-based fluorescent materials devices.

Язык: Английский

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Synthesis of copolymer of aniline-o-phenylenediamine using nonionic surfactant Triton X-100: analysis of electrical conductivities and supercapacitor properties

Ionics, Год журнала: 2024, Номер 30(9), С. 5755 - 5765

Опубликована: Июль 10, 2024

Язык: Английский

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