Results 191 to 200 of about 164,402 (291)

Natural Aging of Biomaterials in Ambient and Physiological Environments

Advanced NanoBiomed Research, EarlyView.
Biomaterials used in biomedical applications can change their physical properties over time, even under ambient and physiological conditions. This review highlights key studies on the natural aging of materials ranging from soft hydrogels to metals and ceramics, emphasizing how time‐dependent changes influence function and performance.
Shuyu Zhang, Anne E. Staples
wiley   +1 more source

Hydrogen Isotope Exchange in Pyridine Catalyzed by an Iron(II) Imido Complex: Counterion‐Directed Regioselectivity

Angewandte Chemie, EarlyView.
Anionic high‐spin iron(II) imido complexes are catalysts for the hydrogen isotope exchange (HIE) reaction with pyridine as the substrate. The alkali metal counter‐cation plays critical roles in activating the substrate and facilitating deuteration. These complexes catalyze site‐selective α‐, α,β,γ‐, and β,γ‐deuteration of pyridine, where the counter ...
Bin Feng, Guorong Li, Yafei Gao, Nobuyuki Yamamoto, Maren Pink, Qian Peng, Jeremy M. Smith   +6 more
wiley   +2 more sources

Benchmark Measurements for Energetic Salts: A Prerequisite toward Improved Estimation Methods for Lattice Enthalpy. [PDF]

ACS Omega
Habert L, Mathieu D, Quéré S, Daniel M, Pasquinet E.   +4 more
europepmc   +1 more source

Conformational Landscapes in the Ground and Excited States Dictate Circularly Polarized Excimer Emission: A Thermodynamic–Kinetic Interplay in Carbazole Dimer Systems

Angewandte Chemie, EarlyView.
Covalently linked carbazole dimers exhibit intense excimer‐based circularly polarized luminescence (CPL). A simple propylene‐tethered dimer achieves glum ≈ 0.01 in the violet region—among the highest for small organic emitters without heavy atoms. Conformational mapping reveals CPL is governed by thermodynamic/kinetic control of emissive conformers ...
Tomohiro Kujime, Zhe Wang, Tadashi Mori
wiley   +2 more sources

Biomolecules involved in the metabolism of Escherichia coli affected by photodynamics: A calorimetry study. [PDF]

PLoS One
Ortega-Zambrano D, Lona-Yepez C, Sierra-Valdez FJ, Mercado-Uribe H.   +3 more
europepmc   +1 more source

Autonomous thermodynamically informed database generation for machine-learned interatomic potentials and application to magnesium. [PDF]

NPJ Comput Mater
Fletcher VG, Bartók AP, Pártay LB.
europepmc   +1 more source

Eyring-Polanyi Rate Theory for the Homogeneous Nucleation of Organic Crystals from Solution. [PDF]

Cryst Growth Des
Schroeder SLM.
europepmc   +1 more source

Room‐Temperature Gas‐Phase CO2‐to‐C3 Coupling by a 4f‐Aromatic Cluster

Angewandte Chemie, EarlyView.
We engineered a 4f metalla aromatic cluster, PrB2C2−, that enables efficient sequential C−C coupling with CO2 at room temperature, yielding a linear C3 backbone. This system provides a complete theoretical catalytic cycle and establishes a new design principle for lanthanide mediated CO2 activation.
Feng‐Xiang Zhang, Xiao‐Wang Li, Ning‐Zheng Li, Sheng‐Gui He, Yu‐Chen Zhang, Li‐Li Xing, Donald G. Truhlar, Jia‐Bi Ma   +7 more
wiley   +1 more source

Intermolecular Electrophilic Germylation Using GeCl4 and Al2Cl6

Angewandte Chemie, EarlyView.
While electrophilic aromatic substitution is well‐established for carbon and silicon‐based electrophiles, it is extremely underdeveloped for germanium. Herein we report the first effective intermolecular Germa–Friedel–Crafts reaction. The process can be modified to enable selective synthesis of the mono‐ or the di‐aryl germane derivatives, ArGeCl3 and ...
Justyna Łosiewicz, Milan Kumar Bisai, Zachary A. Bub, Stuart A. Macgregor, Michael J. Ingleson   +4 more
wiley   +1 more source

Tailoring the glassy phase in polymer semiconductors tunes their optical properties. [PDF]

Nat Commun
Ramos N, Asatryan J, Di Lisio V, Campoy-Quiles M, Martin J, Cangialosi D.   +5 more
europepmc   +1 more source