Macromolecular Rapid Communications

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Fully Renewable Non‐Isocyanate Polyurethanes via the Lossen Rearrangement

A modified procedure of the Lossen rearrangement enables the synthesis of fatty acid derived carbamates and ureas bearing two‐terminal olefins. These monomers are polymerized via the highly efficient thiol–ene reaction with both renewable and commercially available dithiols to yield non‐isocyanate polyurethanes as well as polyureas in a simple and straightforward...

Effect of Chain‐End Chemistries on the Efficiency of Coupling Antibodies to Polymers Using Unnatural Amino Acids

Three cycloaddition strategies for antibody conjugation to polymeric carriers are explored, showing there is a trade‐off between coupling efficiency of the antibody and the ability to synthesize polymers with controlled chemical properties. Ultimately, radical‐based polymerization and strained alkyne functionality need to be segregated from one another...

The Application of Covalent Organic Frameworks for Chiral Chemistry

Benefiting from the regularly arranged channel, tunable pore size, and readily functionalized pore wall of covalent organic frameworks (COFs), scientists have applied COFs in various fields. This review summarizes the applications of COFs for chirality chemistry and discusses the advantages and disadvantages of these COF‐based materials and puts forward...

Silicone Surface Fundamentals

Polydimethylsiloxane (PDMS) is widely used for its fundamental surface properties such as liquid surface tension, water contact angle, and PDMS/water interfacial tension. The first of these is well defined but there is no general agreement on the values of the other two. Significant historic and recent data regarding these properties are reviewed. ...

Cylindrical Zwitterionic Particles via Interpolyelectrolyte Complexation on Molecular Polymer Brushes

Interpolyelectrolyte complexation (IPEC) is increasingly used in the bottom‐up fabrication of complex soft matter. Herein, diblock copolymers with a negatively charged and either non‐ionic or zwitterionic block are complexed onto a polycationic molecular polymer brush. The formation of distinct IPEC domains depends on the nature of the charge‐neutral...

Photopatterning of Azobenzene‐Containing Liquid Crystalline Triblock Copolymers: Light‐Induced Anisotropy and Photostabilization

The supramolecular architecture of azobenzene‐containing liquid crystalline triblock copolymers is investigated in order to control photoinduced optical properties. The combined approach based on flexible composition of block structures and hydrogen‐bonded photoresponsive units enables to optimize induced optical anisotropy and to acquire excellent...

Elucidating the Role of Interfacial Hydrogen Bonds on Glass Transition Temperature Change in a Poly(Vinyl Alcohol)/SiO2 Polymer‐Nanocomposite by Noncovalent Interaction Characterization and Atomistic Molecular Dynamics Simulations

Theoretically and experimentally deduced glass transition temperature, T g, shows direct correlation with hydrogen bonding interactions between nanoparticle surface groups and the groups on the polymer in the nanocomposite as shown by the deconvolution analysis of FTIR data. A maximum limit to this effect of T g increase can be attributed to the overcrowding...

Organocatalytic Synthesis of Alkyne‐Functional Aliphatic Polycarbonates via Ring‐Opening Polymerization of an Eight‐Membered‐N‐Cyclic Carbonate

The synthesis of well‐defined propargyl‐functional aliphatic polycarbonates is achieved using organocatalytic ring‐opening polymerization of a newly reported monomer, prop‐2‐yn‐1‐yl 2‐oxo‐1,3,6‐dioxazocane‐6‐carboxylate (P‐8NC) using a range of commercially available or easy‐to‐prepare, shelf‐stable organocatalysts. The resulting homopolymers show low...

A Spirocyclic Parabanic Acid Masked N‐Heterocyclic Carbene as Thermally Latent Pre‐Catalyst for Polyamide 6 Synthesis and Epoxide Curing

A latent N‐heterocylcic carbene, protected in a spirocyclic manner by two equivalents of cyclohexyl isocyanate, is synthesized and characterized, including X‐ray analysis. Its applicability to serve as polymerization initiator for epoxide curing and polyamide 6 synthesis is investigated. The fragmentation into carbene and isocyanate offers quite interesting...

Nanomechanical Properties of a Supramolecular Helix Stabilized by Non‐Covalent Interactions

The supramolecular helix stabilized by non‐covalent interactions exhibits quite high dynamic stability but low static flexibility as determined by single‐molecule stretching and thermal shape‐fluctuation analysis. The nanomechanical properties of the supramolecular helix are also compared with other helices stabilized by a combination of supramolecular...

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