High performing male with fragile X syndrome with an unmethylated full mutation: The relevance of clinical and genetic correlations.

A high performing male with an unmethylated full mutation in the fragile X messenger ribonucleoprotein 1 () gene surpassed our expectations into young adulthood. Although initial genetic findings helped make a correct fragile X syndrome (FXS) determination, the report was insufficient. Ten years later, we repeated and conducted additional genetic and clinical studies to determine whether more information could assist with treatment and counseling.

Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals.

Lead halide perovskite (LHP) nanocrystals (NCs) have recently garnered enhanced development efforts from research disciplines owing to their superior optical and optoelectronic properties. These materials, however, are unlike conventional quantum dots, because they possess strong ionic character, labile ligand coverage, and overall stability issues. As a result, the system as a whole is highly dynamic and can be affected by slight changes of particle surface environment.

Lead-Free Halide Perovskites for Light Emission: Recent Advances and Perspectives.

Lead-based halide perovskites have received great attention in light-emitting applications due to their excellent properties, including high photoluminescence quantum yield (PLQY), tunable emission wavelength, and facile solution preparation. In spite of excellent characteristics, the presence of toxic element lead directly obstructs their further commercial development. Hence, exploiting lead-free halide perovskite materials with superior properties is urgent and necessary.

Optimized Metal Chalcogenides for Boosting Water Splitting.

Electrocatalytic water splitting (2HO → 2H + O) is a very promising avenue to effectively and environmentally friendly produce highly pure hydrogen (H) and oxygen (O) at a large scale. Different materials have been developed to enhance the efficiency for water splitting. Among them, chalcogenides with unique atomic arrangement and high electronic transport show interesting catalytic properties in various electrochemical reactions, such as the hydrogen evolution reaction, oxygen evolution reaction, and overall water splitting, while the control of their morphology and structure is of vital importance to their catalytic performance.

Ruddlesden-Popper Perovskites: Synthesis and Optical Properties for Optoelectronic Applications.

Ruddlesden-Popper perovskites with a formula of (A')(A) B X have recently gained widespread interest as candidates for the next generation of optoelectronic devices. The variations of organic cation, metal halide, and the number of layers in the structure lead to the change of crystal structures and properties for different optoelectronic applications. Herein, the different synthetic methods for 2D perovskite crystals and thin films are summarized and compared.

Metal-Mediated Self-Assembly of π-Bonded Benzoquinone Complexes into Polymers with Tunable Geometries.

Coordination of Mn(CO) to the π system in hydroquinone facilitates proton loss to afford benzoquinone complexes. Subsequent σ coordination of the benzoquinone oxygen atoms to added metal ions results in neutral one-, two-, or three-dimensional quinoid polymers. The geometrical requirements of the metal ion and the presence of added "spacer" ligands dictate the type of polymer formed.