Results 131 to 140 of about 41,703 (234)

Self-sorting systems of photoresponsive polymer micelles: isomerization drives reversible and switchable self-assembly. [PDF]

Chem Sci
Kanno R, Ouchi M, Terashima T.
europepmc   +1 more source

Expanded Scorpionate and Siderophore‐Inspired Ligands: From Foundational Designs to Modern Applications

European Journal of Inorganic Chemistry, EarlyView.
The concept of scorpionate ligands has evolved significantly since the introduction of tris(pyrazolyl)borate. By integrating a biological supramolecular ligand scaffold with the classic scorpionate architecture, researchers have made notable strides in mimicking the active sites of nitrogenase and advancing homogeneous catalysis.
Austin Winfield Medley, Trandon Allen Bender   +1 more
wiley   +1 more source

All-visible-light-responsive porous aromatic frameworks manipulate CO₂ uptake by reversible bulk isomerization of azobenzene pendants. [PDF]

Proc Natl Acad Sci U S A
Sheng J, Perego J, Bracco S, Cieciórski P, Danowski W, Comotti A, Feringa BL.   +6 more
europepmc   +1 more source

Phenolate‐ and Alcoholate‐Based Chromium N‐Heterocyclic Carbene Complexes: Structural Peculiarities, Magnetometric and Electron Paramagnetic Resonance Study, and Catalytic Ethylene Oligomerization

European Journal of Inorganic Chemistry, EarlyView.
The first low‐oxidation (I/III) state chromium‐complex bearing a O‐chelating NHC ligand has been synthesized and structurally characterized by single‐crystal X‐ray analysis. The formation of the mixed‐valence species was further supported by SQUID magnetometry and high‐field electron paramagnetic resonance (EPR) spectroscopy.
Somnath Bhattacharya, Alexander Allgaier, Wolfgang Frey, Joris van Slageren, Michael R. Buchmeiser   +4 more
wiley   +1 more source

First stage in technological production of Stone Age animal teeth pendants: evidence from Zvejnieki (Latvia) and wider social implications. [PDF]

Archaeol Anthropol Sci
Macāne A, Nordqvist K, Mannermaa K, Needham A, Pomstra D, Alcobendas GC, Reblis J, Zagorska I, Little A.   +8 more
europepmc   +1 more source

Synthesis of a Carbon‐Linked Acyldepsipeptide Derivative

European Journal of Organic Chemistry, EarlyView.
The synthesis of a methylene‐linked acyldepsipeptide (ADEP) is reported. Success relied upon an improve method to generate a versatile vinyl glycine methyl ester synthon and a rationally optimized Grubb’s metathesis. NMR and in silico studies revealed an unusual trans–trans proline orientation for this new unnatural ADEP analog, advancing the ...
Katelyn G. Stevens-Davis, Xiaozheng Dou, Bo Hu, Yangxiong Li, Jiayuan Miao, Yu-Shan Lin, Adam S. Duerfeldt   +6 more
wiley   +1 more source

Helix Regulation of Poly(phenylacetylene)s through the Interplay between Enantiomeric Excess and Temperature-Triggered Pendant Isomerization. [PDF]

Precis Chem
Wang D, Li W, Cheng J, Xu X, Chu X, Feng Z, Sheng N, Lin L, Zhang H, Chen X, Zou G.   +10 more
europepmc   +1 more source

Policy Spandrels: How Design Decisions Can Open Up Spaces for Unintended Policy Change

European Policy Analysis, EarlyView.
ABSTRACT This article introduces the concept of policy spandrels to make sense of public policies producing second‐order effects that are unintentional from the perspective of policy design and yet are fraught with consequences. By analogy with architectural spandrels—leftover spaces that can be used for unforeseen purposes—policy change can be enabled
Martino Maggetti
wiley   +1 more source

Fluorescence Visualization of Helix Inversion in Biomimic Polymeric Foldamer. [PDF]

Angew Chem Int Ed Engl
Qiu Y, Liu Z, Sun C, Wei X, Kwok RTK, Liao Y, Sun J, Lam JWY, Qiu Z, Xie X, Tang BZ.   +10 more
europepmc   +1 more source

Coherent Forecasting of Realized Volatility

Journal of Forecasting, EarlyView.
ABSTRACT The QLIKE loss function is the stylized favorite of the literature on volatility forecasting when it comes to out‐of‐sample evaluation and the state of the art model for realized volatility (RV) forecasting is the HAR model, which minimizes the squared error loss for in‐sample estimation of the parameters.
Marius Puke, Karsten Schweikert
wiley   +1 more source