Entropy-driven ring-opening olefin metathesis polymerization of macrocycles

Whittlesey and Michael F. Mesoscale dendritic structures are induced when the spin-cast thin film of this polymer is subjected to so-called hybrid annealing, which involves both thermal and solvent annealing.

Soft Matter (v.5, #23)

Here, we design and synthesize a novel phenylboronic acid derivative with a tertiary amine group adjacent to the boron atom as a pilot molecule toward PI at a physiological condition.

Miguel; Cosima Stubenrauch Here, we report a simple technique for shaping liquids into micrometre-scale filaments. Search articles by author. To the best of our knowledge, this is the first study of self-assembly of ultra-high-molecular-weight, amphiphilic CBCPs at the air—water interface.

This scaffold is supposed to be a gel, which was formed by adding the gelator hydroxyoctadecanoic acid HOA to the oil phase of the microemulsion.

Contact angle measurements revealed a very hydrophilic nature of the formed films. Quantitative measurements of microbubble production allowed an analysis of competitive adsorption. The synthesis of polyrotaxanes with terminal stoppers was achieved via ring-opening metathesis polymerization ROMP of a [2]catenane with a modified initiator containing a bulky end group followed by termination with a chain transfer agent containing a bulky stopper.

Bovine serum albumin inhibited Survanta adsorption in a dose-response manner. Since diol sugars are abundant on cell surfaces, vesicle fusion systems based on the recognition of diol functionalities can be relevant for liposome-based drug delivery.

Gas and mercury permeability measurements show that as the internal phase volume of the emulsion template is reduced, the permeability of the resultant macroporous polymer is also reduced.

Microbubble production was not reactivated by the addition of the nonionic polymer, poly ethylene glycol. The two derivatives of chitosan were used to prepare stable multilayer polyelectrolyte films through a layer-by-layer LbL deposition technique.

The thermal and lyotropic liquid crystalline phase behaviour of a series of amide and monoethanolamide amphiphiles with isoprenoid-type hydrocarbon chains has been investigated.

From a quantitative standpoint, adsorption isotherms were found to be independent on the polymer core nature but rather strongly dependent on the adsorbed lipid shell composition.

Patton; Rui Huang; Christopher M. Both phytanoyl and H-farnesoyl monoethanolamide form mesoporous cubic phases at room temperature that are easily dispersed into cubosomes.

Dr. Michael F. Mayer

For reproduction of material from all other RSC journals and books: Facile synthesis and self-assembly of multihetero-arm hyperbranched polymer brushes by Chao Gao; Xing Zheng This spontaneous self-assembly behavior of the CBCP was induced by the dewetting process. Recently, the Mayer group developed a new approach to a stable entangled assembly that is composed of a molecular chain that was threaded through numerous molecular rings by a process known as an entropy-driven ring-opening olefin metathesis polymerization ED-ROMP.

Smith; Jaroslaw Majewski; Ryan G. We present a new wrinkling-based measurement technique for quantifying the viscoelastic properties of confined polymer thin films.

This model has important practical applications. In all cases the Ref. If the material has been adapted instead of reproduced from the original RSC publication "Reproduced from" can be substituted with "Adapted from". Go to our Instructions for using Copyright Clearance Center page for details.

This technology shows promise for applications in micro-patterning, nano- and micro-reactors, and microfluidics. They consist of submicrometer anionic spherical polymer particles composed of either poly styrene or poly lactic acid which are coated with lipid layers formed by mixtures of zwitterionic 1,2-dipalmitoyl-sn-glycerophosphocholine DPPC and cationic 1,2-dipalmitoyltrimethylammonium-propane DPTAP in tunable proportions.Template-Directed Ring-Closing Metathesis: Synthesis and Polymerization of Unsaturated Crown Ether Analogs template directing and olefin metathesis.

Dr. Michael F. Mayer

(Cy = cyclohexyl). Ring-opening metathesis polymerization (ROMP). Volume 4 is devoted to kinetics, mechanisms and applications of ring opening polymerization of heterocyclic monomers and cycloolefins (ROMP), as well as.

In the second part of this dissertation is described the first random entropy-driven ring-opening metathesis copolymerization of a macrocyclic olefin monomer and an olefinic [2]catenane comonomer to control the linear number density of threaded macrocycles in main-chain polypseudorotaxanes.

1 Lin-Lin Deng, Ling-Xiang Guo, Bao-Ping Lin, Xue-Qin Zhang, Ying Sun, Hong Yang, An entropy-driven ring-opening metathesis polymerization approach towards main-chain liquid crystalline polymers, Polym. In this manuscript, an entropy-driven ring-opening metathesis polymerization (ED-ROMP) approach is for the first time applied in producing a MCLCP by polymerizing a macrocyclic olefin monomer.

A bis-phenanthroline [2]catenane copper complex, consisting of one olefinic macrocycle and one nonolefinic macrocycle, underwent an entropy-driven ring-opening olefin metathesis polymerization (ROMP) to provide a polypseudorotaxane.

Entropy-driven ring-opening olefin metathesis polymerization of macrocycles
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