Results 71 to 80 of about 552,882 (305)

Conformations of biopolymers in the gas phase: a new mass spectrometric method [PDF]

, 2000
A method is developed for measuring collision cross sections of gas-phase biomolecules using a slightly modified commercial triple quadrupole instrument.
Bowers, Michael T., Gill, Andy, Jennings, Keith R., Wyttenbach, Thomas   +3 more
core   +1 more source

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

Advanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu, Ritam Chakraborty, Biao Yang, Dennis Meier, Joachim Reichert, Svetlana Klyatskaya, Mario Ruben, Shobhana Narasimhan, Johannes V. Barth, Anthoula C. Papageorgiou   +9 more
wiley   +1 more source

C2 to C6 biobased carbonyl platforms for fine chemistry

Beilstein Journal of Organic Chemistry
The carbonyl group is central in organic synthesis, thanks to its ability to undergo a vast range of different chemical transformations on its carbon center or at the neighboring positions.
Jingjing Jiang, Muhammad Noman Haider Tariq, Florence Popowycz, Yanlong Gu, Yves Queneau   +4 more
doaj   +1 more source

13C NMR reveals no evidence of n-π* interactions in proteins. [PDF]

PLoS ONE, 2012
An n = π* interaction between neighboring carbonyl groups has been postulated to stabilize protein structures. Such an interaction would affect the (13)C chemical shielding of the carbonyl groups, whose paramagnetic component is dominated by n = π* and π
Bradley Worley, Georgia Richard, Gerard S Harbison, Robert Powers   +3 more
doaj   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

1,3-Dipolar Cycloaddition Reactions of Azomethine Ylides with Carbonyl Dipolarophiles Yielding Oxazolidine Derivatives

Molecules, 2016
We provide a comprehensive account of the 1,3-dipolar cycloaddition reactions of azomethine ylides with carbonyl dipolarophiles. Many different azomethine ylides have been studied, including stabilized and non-stabilized ylides.
Adam G. Meyer, John H. Ryan
doaj   +1 more source

Pollution Characteristics of Atmospheric Carbonyl Compounds in a Large City of Northern China

Journal of Chemistry, 2022
To better understand the pollution characteristics and formation mechanisms of atmospheric carbonyl compounds, continuous measurements of carbonyl compounds in Jinan were taken for one month at a sampling frequency of 2 h.
Jinhe Wang, Shan Chen, Xiaoguo Qiu, Wenya Niu, Ouyang Li, Chao Zhu, Xi Zhang, Xue Yang, Guiqin Zhang   +8 more
doaj   +1 more source

A Versatile Ligand Platform that Supports Lewis Acid Promoted Migratory Insertion [PDF]

, 2012
A helping hand: Incorporation of Group 2 Lewis acids into a macrocycle appended to a phosphine ligand attached to a rhenium carbonyl complex promotes otherwise unfavorable transformations of coordinated CO (see scheme; M=Ca, Sr).
Bercaw, John E., Hazari, Amaruka, Labinger, Jay A.   +2 more
core   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source

fac-Acetonitriletricarbonyl(dimethylcarbamodithioato-κ2S,S′)rhenium(I): crystal structure and Hirshfeld surface analysis

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title compound, [Re(C3H6NS2)(C2H3N)(CO)3], features an octahedrally coordinated ReI atom within a C3NS2 donor set defined by three carbonyl ligands in a facial arrangement, an acetonitrile N atom and two S atoms derived from a symmetrically ...
Sang Loon Tan, See Mun Lee, Peter J. Heard, Nathan R. Halcovitch, Edward R. T. Tiekink   +4 more
doaj   +1 more source