Atomically Precise Cu Nanoclusters with Thermally Activated Delayed Fluorescence Properties.

Ligand-stabilized metal nanoclusters with atomic precision are considered to be promising materials in the field of light-emitting and harvesting. Among these, nanoclusters with thermally activated delayed fluorescence (TADF) properties are highly sought after. While several gold and silver nanoclusters with TADF properties have been reported in recent years, research on copper counterparts has significantly lagged behind.

Molybdate-Templated Luminescent Silver Alkynyl Nanoclusters: Total Structure Determination and Optical Property Analysis.

Two novel MoO-templated luminescent silver alkynyl nanoclusters with 20-nuclearity ([(MoO)@Ag(C≡CBu)(PhPO)(tfa)]·(tfa) ()) and 18-nuclearity ([(MoO)@Ag(C≡CBu)(PhPO)]·(OH) ()) (tfa = trifluoroacetate) were synthesized with the green light maximum emissions at 507 and 516 nm, respectively. The nanoclusters were investigated and characterized by single-crystal X-ray crystallography, electrospray ionization mass spectrum (ESI-MS), X-ray photoelectron spectroscopy, thermogravimetry (TG), photoluminescence (PL), ultraviolet-visible (UV-vis) spectroscopy, and density functional theory calculations (DFT). The two nanoclusters differ in their structure by a supplementary [Ag(tfa)] organometallic surface motif, which significantly participates in the frontier molecular orbitals of , resulting in similar bonding patterns but different optical properties between the two clusters.

[Comparative study of serum levels of BMP-2 and heterotopic ossification in traumatic brain injury and fractures patients].

Objective: To investigate the relationship between serum level of bone morphogenetic proteins-2 (BMP-2) and heterotopic ossification (HO) in traumatic brain injury (TBI) and fractures patients, providing the theoretical evidence for the clinical prevention of HO.

Methods: From December 2007 to January 2009, 145 with trama patients were selected. There were 96 closed primary traumatic brain injury patients, 1 penetrating primary traumatic brain injury, 29 fractures of the radius and ulna, 11 fractures of the humerus, 32 fractures of the tibia and fibula, 27 fractures of the femur.