New one-dimensional mercury(II) coordination polymers built up from dispiro-dipyridyloxy-cyclotriphosphazene: Structural, thermal and UV–Vis absorption properties

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

This review article provides a comprehensive overview of recent advancements in the realm of cyclophosphazenes, encompassing their preparation methodologies, distinctive properties, and diverse applications. The synthesis approaches are explored, highlighting advancements in the preparation of these cyclic compounds. The discussion extends to the distinctive properties exhibited by cyclophosphazenes, including thermal stability characteristics, and other relevant features. Furthermore, we examine the broad spectrum of applications for cyclophosphazenes in various fields, such as coatings, adhesives, composites, extractants, metal complexes, organometallic chemistry, medicine, and inorganic chemistry. This review aims to offer insights into the evolving landscape of cyclophosphazenes and their ever-expanding roles in contemporary scientific and technological arenas. Future possibilities are emphasized, and significant research data shortages are identified.

A Surface Coordination Interphase Stabilizes a Solid-State Battery

Solid-state electrolytes (SSEs) show potential in addressing the safety issues of liquid batteries, but the poor interface contact between them and the electrodes hinders practical applications. Here, coordination chemistry of nitrile groups based on succinonitrile (SCN) and polyacrylonitrile (PAN) is studied on the surface of Li_6.4 La₃ Zr_1.4 Ta_0.6 O₁₂ (LLZTO) SSE to build the chemical bonded electrolyte/electrode interfaces. The coordination of the nitrile group and LLZTO is clarified. A deformable PAN-modifying SCN electrolyte (PSE) interphase with stable ionic conductivity (10^-4  S cm^-1 ) and high lithium-ion transference number (0.66) is fabricated on the surface of LLZTO electrolyte based on the coordination competition of nitrile groups. Once applied to SSBs, it endows low interface resistance and strong bonding for the electrolyte/electrode interfaces so that the initial Coulomb efficiency reaches 95.6 % and the capacity remains 99 % after 250 cycles at 25 °C.

Red-fluorescent graphene quantum dots from guava leaf as a turn-off probe for sensing aqueous Hg(ii)

In this work, we have prepared red-fluorescent graphene quantum dots and utilized as a highly selective and sensitive fluorescence turn-off probe for detection of the toxic metal ion Hg²⁺ from guava leaf extract.

Recent advances in the supramolecular assembly of cyclophosphazene derivatives

There is still room for improvement in supramolecular systems based on cyclophosphazene derivatives and their potential applications.

A hybrid nanosensor based on novel fluorescent iron oxide nanoparticles for highly selective determination of Hg2+ ions in environmental samples

Novel fluorescent iron oxide nanoparticles were prepared for the determination of Hg²⁺ in real samples. The fluorescence behaviors of the sensor were examined using absorption and fluorescence (steady-state, time-resolved, 3-D, EEM) spectroscopies.

ESIPT on/off switching and crystallization-enhanced emission properties of new design phenol-pyrazole modified cyclotriphosphazenes

Cyclophosphazene-based high-efficiency excited state intramolecular proton transfer (ESIPT) active and inactive molecules were prepared depending on the different bonding patterns of the difunctional phenol-pyrazol reagent.

Electrophoresis and Biosensor-Based DNA Interaction Analysis of the First Paraben Derivatives of Spermine-Bridged Cyclotriphosphazenes

Cancer is the uncontrolled growth of abnormal cells via malignant cell division and rapid DNA replication. While DNA damaging molecules can cause cancer, their role as anticancer drugs are very significant. For this purpose, the novel series of paraben substituted spermine bridged(dispirobino) cyclotriphosphazene compounds 2-6 were synthesized for the first time, and their structures were characterized by various spectroscopic techniques. The solid-state structures and geometries of compounds 2-6 were determined using single-crystal X-ray structural analysis. In addition, it was confirmed by TGA that all compounds 1-6 showed high thermal stability. Two methods were used in order to investigate DNA interaction properties of the targeted molecules. While biosensor-based screening test that measures DNA hybridization efficiency on a biochip surface, the agarose gel electrophoresis method examines the effect of compounds on plasmid DNA structure. The results collected from the automated biosensor device and agarose gel electrophoresis have indicated that compounds 1, 5, and 6 showed higher DNA damage than the compounds 2-4. According to the biosensor results, compounds 1, 5, and 6 showed 85%, 69%, and 77% activity, respectively.