Results 81 to 90 of about 7,136 (293)

Sequence‐Controlled Copolymers Through Selective Ring‐Opening Polymerization of Multiunit Macrolactones

Advanced Science, EarlyView.
Sequence‐controlled polymers were prepared through ring‐opening polymerization (ROP) exploiting esters with enhanced reactivity in the multiunit monomer induced by incorporation of a glycolate group, enabling selective ROP. ABSTRACT A new strategy for the synthesis of sequence‐controlled polymers (SCP), in which increased ester reactivity by the ...
Vincent Nieboer, Giacomo Di Giambattista, Peter Olsén, Peter Dinér, Karin Odelius   +4 more
wiley   +1 more source

Synthesis and Ring-Opening Metathesis Polymerization of Second-Generation Dendronized Poly(ether) Monomers Initiated by Ruthenium Carbenes

Oil & Gas Science and Technology, 2016
The Ring-Opening Metathesis Polymerization (ROMP) of second-generation dendronized monomers is described. Using the highly active and fast-initiating third-generation ruthenium complex [(H2IMes)(pyr)2Cl2RuCHPh], moderate to high molecular weight polymers
Guzmán Pablo E., Piunova Victoria A., Miyake Garret M., Grubbs Robert H.   +3 more
doaj   +1 more source

Metátese de olefinas no Brasil: "Brazil is romping it!" Olefin metathesis in Brazil: Brazil is romping it!

Química Nova, 2007
Some aspects of the olefin metathesis reactions are summarized here (types of reactions, mechanism and catalysts). In particular, the research groups that have been working on this chemistry in Brazil are presented. The main goal of this paper is to make
José Milton E. Matos, Nouga C. Batista, Rogério M. Carvalho, Sirlane A. A. Santana, Paula N. Puzzi, Mário Sanches, Benedito S. Lima-Neto   +6 more
doaj   +1 more source

The synthesis and properties of some well-defined fluorinated polymers [PDF]

, 1996
This thesis describes studies directed to the ring opening metathesis polymerisation (ROMP) of some fluorinated compounds using a range of well-defined initiators.
Towns, Richard Mark
core  

Activation‐Induced Turbostratic Ordering in pDCPD‐Derived Hard Carbon Enables Stable Carbonate‐Based Sodium‐Ion Storage

Advanced Science, EarlyView.
Hard carbon derived from templated poly(dicyclopentadiene) as anode for sodium–ion batteries was engineered through carbonization and second‐step CO2${\rm CO}_2$ activation. High‐temperature carbonization and activation increased local ordering while reducing defects without inducing structural fracture.
David Schuster, Glen J. Smales, Max Schmallegger, Julian M Rosalie, Konstantin Kraushaar, Andreas Lißner, Julia Bohdal, Pia Winter, Bernd Fuchsbichler, Stefan Koller, Sebastijan Kovačič, Christian Slugovc   +11 more
wiley   +1 more source

Increasing community capacity to prevent childhood obesity: challenges, lessons learned and results from the Romp & Chomp intervention

BMC Public Health, 2010
Background Obesity is a major public health issue; however, only limited evidence is available about effective ways to prevent obesity, particularly in early childhood.
de Groot Florentine P, Robertson Narelle M, Swinburn Boyd A, de Silva-Sanigorski Andrea M   +3 more
doaj   +1 more source

NOTE Water-Soluble ROMP Polymers from Amine-Functionalized Norbornenes

, 2008
metathesis polymerization (ROMP); water soluble ...
Lienkamp, K, Madkour, Ahmad E., Gregory N. Tew, Ahmad E. Madkour, Madkour, AE, Tew, GN, Alfred, Sterling F., Karen Lienkamp, Alfred, SF, Lienkamp, Karen, Sterling F. Alfred, Tew, Gregory N.   +11 more
core   +1 more source

Decoupling Stable Cyclic Deformation From Defect Accumulation in Metals

Advanced Science, EarlyView.
Introducing amorphous nanoparticles into a metal matrix enables a cyclic deformation regime where strain hardening and defect accumulation are decoupled. These nanoparticles act as dislocation sinks and undergo reversible shear transformations, sustaining microstructural stability over millions of cycles.
Chenjun Ye, Shaofan Ge, Tian Yang, Leyi Tang, Kang Wang, Y. Morris Wang, Jun Ding, Zan Li, Di Zhang, En (Evan) Ma   +9 more
wiley   +1 more source

Incorporating supramolecular motifs into macromolecular backbones via entropy-driven ring-opening metathesis polymerization: a case study on benzene-1,3,5-tricarboxamides

Giant
The incorporation of supramolecular motifs into polymer architectures provides a versatile route to creating macromolecular systems with precise structures and customized properties.
Qingqing Han, Haoxuan Li, Zeyu Wang, Tingxuan Chen, Taolin Sun, Cunluo Wu, Yiliu Liu   +6 more
doaj   +1 more source

Stereochemistry of ring-opening/cross metathesis reactions of exo- and endo-7-oxabicyclo[2.2.1]hept-5-ene-2-carbonitriles with allyl alcohol and allyl acetate

Beilstein Journal of Organic Chemistry, 2015
The ROCM reactions of exo- and endo-2-cyano-7-oxanorbornenes with allyl alcohol or allyl acetate promoted by different ruthenium alkylidene catalysts were studied. The stereochemical outcome of the reactions was established. The issues concerning chemo- (
Piotr Wałejko, Michał Dąbrowski, Lech Szczepaniak, Jacek W. Morzycki, Stanisław Witkowski   +4 more
doaj   +1 more source