Results 171 to 180 of about 89,601 (249)

Sequence‐Controlled Helical Ladder Polymers: Impact of Stereochemical Sequence on Helical Geometry and Chiral Recognition

Angewandte Chemie, EarlyView.
Nature programs distinct secondary structures and functions through subtle stereochemical differences, as exemplified by amylose and cellulose. Translating this principle into synthetic ladder polymers, stereochemical sequence control gives rise to diastereomeric coil‐ and ribbon‐type helices with complementary chiral recognition, demonstrating ...
Tomoyuki Ikai, Kanta Wakabayashi, Masaya Yoshida, Kosuke Oki, Eiji Yashima   +4 more
wiley   +2 more sources

Automated Peak Annotation in Time-of-Flight Secondary Ion Mass Spectrometry via a Physics-Informed Probabilistic Framework. [PDF]

Molecules
Chen J, Cao Y, Jiang X, Wu C, Hao Q, Hu Y, Liu J.   +6 more
europepmc   +1 more source

Substrate‐Dependent Crosslinking by the Cytochrome P450 From Aminopyruvatide Biosynthesis

Angewandte Chemie, EarlyView.
Substitutions in the aminopyruvatide precursor peptide altered the C─C linkage formed from a YLY motif by the P450 ApyO to a N─C linkage in a WLY motif. Moreover, constitutional isomers crosslinked by C─C and C─O linkages were formed from YYY or YWY motifs. ABSTRACT Cytochrome P450s catalyze an array of reactions including crosslinking of aromatic side
Chandrashekhar Padhi, Dinh T. Nguyen, Lingyang Zhu, Lide Cha, Jesse W. Wald, Douglas A. Mitchell, Wilfred A. van der Donk   +6 more
wiley   +2 more sources

Enhancing the MALDI-TOF MS Detection Mass Range of Saccharides Using a Reactive Composite Matrix. [PDF]

J Mass Spectrom
Wang S, Liu M, Ling L, Ding CF.
europepmc   +1 more source

One‐Pot Synthesis of Aqueous PEDOT‐Based Conductive Inks via Sequential RAFT/Oxidative Polymerization

Angewandte Chemie, EarlyView.
We developed a fast, aqueous one‐pot synthesis for PEDOT:PSTFSI, combining sequential reversible addition–fragmentation chain‐transfer (RAFT) and oxidative polymerization. This method eliminates toxic solvents and purification steps, achieving full monomer conversion in under 3 h.
Fantine Negny, Melanie Bousquet, Benjamin Cabannes‐Boué, Pierre‐Yves Dugas, Lionel Hirsch, Thiago R. Guimaraes, Eric Cloutet   +6 more
wiley   +2 more sources

Metal–Metal Cooperative C─F and S─F Bond Cleavage by Low‐Valent Tetracobalt Clusters and Water‐Assisted Fluoroarene Hydrodefluorination

Angewandte Chemie, EarlyView.
Self‐assembled tetrahedral CoI4 clusters supported by simple bipyridine‐based ligands undergo core rearrangement to cleave S─F and C(sp2)─F bond, forming fluoride‐bridged tetracobalt(II)‐oxo clusters, while exposure of cobalt(I) clusters to molecular oxygen yields cubane‐type cobalt(III) oxo clusters.
Hoan M. Dinh, Pavan K. Vardhanapu, Robert R. Fayzullin, Eugene Khaskin, Julia R. Khusnutdinova   +4 more
wiley   +2 more sources

A Safe and Portable CMUT Array Ultrasonic System for Bubble Sizing in Industrial Silicone Sealing Rings. [PDF]

Micromachines (Basel)
He C, Liu S, Chai H, Li D, Liu C, Gao W, Yang Y, Jia L, Zhang G, Wang R, Cui J, Zhang W.   +11 more
europepmc   +1 more source

Postpartum Vertebral Artery Dissection After Neck Massage Resulting in a Right Cerebellar Infarct: A Case Report and Literature Review. [PDF]

Cureus
Bennani S, Atlassi Z, Akkari S, Amrani C, Rami A.   +4 more
europepmc   +1 more source

CoMind R1: a time-resolved interferometric optical neuromonitoring system for pulsatile cerebral blood flow measurement at late times-of-flight. [PDF]

Neurophotonics
Parfentyeva V, Behera A, Avtzi S, Tran-Van-Minh A, Etard O, Freer S, Tambe T, Mehmed A, Isufaj A, Goodrich J, Ibrahim Y, Singh N, Darabi S, Villar Sanjurjo P, Malde S, Ali T, Kim Y, Sturniolo S, Ruesch A, Hill DW, Salehi Lashkajani A, Zhang Y, McCarthy P, Hu X, Antrobus A, Maine C, Thackrah M, Valley MT, Crutchley B, Borycki D, Dragojević T, Lindner C, Cooper RJ.   +32 more
europepmc   +1 more source

Frequency and Direction-Dependent Shear-Wave Responses in Ex Vivo Tissues Measured by a Time-of-Flight Device. [PDF]

Bioengineering (Basel)
Kimondo JJ, Feng Z, Yang J, Lu Q, Pérez-Buitrago S, Wu Z.   +5 more
europepmc   +1 more source