Probing Interparticle Interaction and Ordering in Silica-Pluronic-Based Solutions and Emulsions by Small-Angle Scattering Techniques.

Introduction of non-DLVO forces by nonionic surfactants brings about fascinating changes in the phase behavior of silica nanosuspensions. We show here that alterations in the interaction and wetting properties of negatively charged silica nanoparticles (Ludox® LS) in the presence of polyethylene oxide-polypropylene oxide-polyethylene oxide-based triblock copolymers called Pluronics lead to the formation of stable o/w Pickering emulsions and interparticle attraction-induced thermoresponsive liquid-liquid phase separations. The results make interesting comparisons with those reported for Ludox® TM nanosuspensions comprising larger silica nanoparticles.

Enhanced Singlet Oxygen Generation in Aggregates of Naphthalene-Fused BODIPY and Its Application in Photodynamic Therapy.

Several reports are available on aggregation-induced emission and its applications in biomedical imaging and other material sciences. However, enhancement of singlet oxygen generation in nanoaggregates is rarely reported. Here, we report the synthesis of , which absorbs at 661 nm (monomer) with a high molar absorption coefficient.

Acute Fulminant Viral Cerebellitis With Hypoxic-Ischemic Encephalopathy in a Male Child.

Acute cerebellitis is a rare inflammatory process affecting the cerebellum, commonly seen in the pediatric population following primary or secondary infection. Since the condition presents with a broad spectrum of clinical symptoms, radiological investigations, preferably magnetic resonance imaging, become essential in diagnosing it and planning further management. In this article, we discuss a case of a child presenting with a severe form of acute cerebellitis and hypoxic-ischemic encephalopathy secondary to brainstem compression.

Si-Linked Glycomimetics through a Stereoselective Silicon Transfer and Anion Addition.

We report a synthesis of silicon-linked glycomimetics, demonstrating unique structural properties and metabolic stability due to the inertness of the C-Si bond. Our method focuses on the stereoselective transfer of silicon and anion addition, revealing that chirality at the silicon atom can be controlled through kinetic resolution. This approach allows for the selective generation of 1,2- and 1,2- isomers via the manipulation of C2-protected silicon ethers and nucleophilic opening of glycal epoxides.

Maximizing Upconversion Luminescence of Co-Doped CaF₂:Yb, Er Nanoparticles at Low Laser Power for Efficient Cellular Imaging.

Upconversion nanoparticles (UCNPs) are well-reported for bioimaging. However, their applications are limited by low luminescence intensity. To enhance the intensity, often the UCNPs are coated with macromolecules or excited with high laser power, which is detrimental to their long-term biological applications.