Enhancement of Photoluminescence Quantum Yield of Silver Clusters by Heavy Atom Effect.

Many ligand-protected metal clusters exhibit phosphorescence at room temperature. However, strategies for improving their phosphorescence quantum yield, a critical parameter of performance, remain poorly developed. In contrast, fluorescent dyes are commonly modified by introducing heavy atoms, such as iodine (I), to enhance intersystem crossing in the excited state, thereby harnessing the heavy atom effect to increase phosphorescence efficiency.

Nanosheet-to-nanoparticle transformation in charged water microdroplets: a pathway for 2D to 0D materials.

This study explores the electrospray-induced transformation of molybdenum disulfide (MoS), graphene oxide (GO), and tungsten disulphide (WS) nanosheets of micrometer lateral dimensions into the respective zero-dimensional nanoparticles within the reactive environment of charged water microdroplets. The products characterized by high-resolution transmission electron microscopy (HRTEM) and Raman spectroscopy showcase charged microdroplets as an ambient, scalable medium for the synthesis of nanomaterials with promising applications in catalysis and environmental remediation.

A clinical study of immediate postoperative corneal edema in patients undergoing minor incision cataract surgery in a teaching hospital.

Background: Transient corneal edema is one of the most common complications observed after cataract surgery. If the center of the cornea is involved, it may result in impaired visual acuity in the immediate postoperative period. Hence, it concerns both the surgeon and the patient.

Site-specific substitution in atomically precise carboranethiol-protected nanoclusters and concomitant changes in electronic properties.

We report the synthesis of [Ag(o-CBT)] abbreviated as Ag, a stable 8e⁻ anionic cluster with a unique Ag@Ag@Ag core-shell structure, where o-CBT is ortho-carborane-1-thiol. By substituting Ag atoms with Au and/or Cu at specific sites we created isostructural clusters [AuAg(o-CBT)] (AuAg), [AgCu(o-CBT)] (AgCu) and [AuAgCu(o-CBT)] (AuAgCu). These substitutions make systematic modulation of their structural and electronic properties.

Structural Changes in Atomically Precise Ag Nanoclusters upon Sequential Attachment and Detachment of Secondary Ligands.

Elucidating the structural dynamics of ligand-stabilized noble metal nanoclusters (NCs) is critical for understanding their properties and for developing applications. Ligand rearrangement at NC surfaces is an important contributor to structural change. In this study, we investigate the dynamic behavior of ligand-protected [Ag(L)] NC's (L = 1,3-benzenedithiol) interacting with secondary ligand 2,2'-[1,4-phenylenebis (methylidynenitrilo)] bis[benzenethiol] (referred to as ).