Abstract The modification of polymers after the successful achievement a polymerization process represents an important task in macromolecular science. Cycloaddition reactions, among them metal catalyzed azide/alkyne ‘click’ reaction (a variation Huisgen 1,3‐dipolar cycloaddition between terminal acetylenes and azides) contribution towards this endeavor. They combine high efficiency (usually above 95%) with tolerance functional groups solvents, as well moderate temperatures (25–70 °C)....

Abstract The metal catalyzed azide/alkyne ‘click’ reaction (a variation of the Huisgen 1,3‐dipolar cycloaddition between terminal acetylenes and azides) has vastly increased in broadness application field polymer science. Thus, this represents one few universal, highly efficient functionalization reactions, which combines both high efficiency with an enormously tolerance functional groups solvents under moderate temperatures (25–70 °C). present review assembles update science (linear...

According to a SciFinder-search in January 2008, the azide/alkyne-"click"-reaction (also termed CuAAc) has had enormous impact within field of polymer science. Thus, ∼220 original papers have been published context click-chemistry and science, more than 20 Reviews at least 10 patents appeared, altogether stressing importance this reaction. Given short timeline for discovery Cu(I)-catalysis by Meldal et al. Sharpless ∼2002 first applications science (∼2004), someone can ask question "where...

Comb-shaped poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) polymers with quaternary ammonium (QA) groups have been synthesized organizing into well-defined micro-morphology for efficient anion (hydroxide) transport. These molecular comb structures show a dramatic enhancement in conductivity and water resistance compared non-comb-shaped PPOs.

Membranes can be fabricated either from lipid or polymer molecules, leading to the formation of liposomes polymersomes. In all types liposomal membranes, issue phase separation plays a central role not only in membrane-formation itself, but also resulting structural features taking place within at surface such membranes. When nanoparticles polymers interact with final morphology is strongly determined by charge, composition and size interacting components, which turn induce processes. The...

The fixation of ligands onto molecules, surfaces and materials by use reactions using a simple unified chemistry is among the everlasting desires chemists. Besides general insensitivity with respect to chemical structures ligand, completeness reaction as well from external parameters (i.e.: solvents, ambient temperature) wished. copper(I)-catalysed azide/alkyne "click"-reaction (also termed Sharpless "click"-reaction, variation Huisgen 1,3-dipolar cycloaddition between terminal acetylenes...

At the interface: The supramolecular organization of nanometer-scale objects is great interest in field applied nanotechnology. Liquid–liquid interfaces can provide an alternative to current methods for formation highly ordered structures through self-assembly nanoparticles, nanocrystals, and even viruses (see picture). concept generally applicable be transferred other interfaces, such as those polymers.

Sharpless 1,3-dipolar cycloadditions ("click reactions") between azides and acetylenes were used to prepare functional poly(oxynorbornenes) within their side chains. Two different strategies applied combine the preparation of ROMP polymers with cycloaddition approach: (a) attachment groups (i.e., hydrophobic hydrogen bonding units) by reactions 7-oxynorbornenes bearing subsequent yielding final polymers; (b) polymerization furnishing first acetylenic azido moieties subsequently attaching...

Both function and use of nanoparticles (NPs) to a great extent are dominated by interfacial energies, which in turn can be addressed chemical modifications. This article focuses exclusively on the ‘click’-chemistry for NP-surface modification, also putting major focus application resulting NPs bio- nanoscience. As is universal method link reaction partners high efficiency, solvent insensitivity at moderate conditions, its engineering NP surfaces has become widespread. The basic approach...

Mono- and bifunctional supramolecular poly(isobutylene)s (PIBs) bearing hydrogen-bonding motifs (barbituric acid or a Hamilton wedge) are prepared by combination of living carbocationic polymerization (LCCP) azide–alkyne "click" reactions to investigate their dynamics self-healing behaviour. Barbituric (7) wedge (8) functionalized polymers (3a–c, 4a–d, 5a–c, 6a) with molecular weights ∼3000 up 30 000 g mol−1 exhibit complete end group transformation as proven NMR MALDI methods....

Supramolecular polyisobutylenes (PIB) bearing mono- and bifunctional chain ends with hydrogen-bonding units were prepared, their association behavior in the melt state was investigated by dynamic rheology compared to aggregation solution, aiming at determining dynamics solid state. A preparation combining living cationic polymerization either azide/alkyne "click" reactions or nucleophilic substitution enabled a full end group transformation final PIB polymers, modified thymine...

ConspectusClick chemistry has emerged as a significant tool for materials science, organic chemistry, and bioscience. Based on the initial concept of Barry Sharpless in 2001, copper(I)-catalyzed azide/alkyne cycloaddition (CuAAC) reaction triggered plethora chemical concepts linking molecules building blocks under ambient conditions, forming basis applications autonomous cross-linking materials. Self-healing systems other hand are often based mild chemistries that able to react either...

Abstract “Click” chemistry represents one of the most powerful approaches for linking molecules in and materials science. Triggering this reaction by mechanical force would enable site‐ stress‐specific “click” reactions—a hitherto unreported observation. We introduce design realization a homogeneous Cu catalyst able to activate through when attached suitable polymer chains, acting as lever transmit central catalytic system. Activation subsequent copper‐catalyzed (CuAAC) is achieved either...

Abstract The successful encapsulation of reactive components for the azide/alkyne‐“click”‐reaction is reported featuring first time use a liquid polymer as component. A liquid, azido‐telechelic three‐arm star poly(isobutylene) ( $\overline {M} _{{\rm n}} $ = 3900 g · mol −1 ) well trivalent alkynes were encapsulated into micron‐sized capsules and embedded polymer‐matrix (high‐molecular weight poly(isobutylene), 250 000 ). Using (Cu I Br(PPh 3 catalyst azide/alkyne‐“click”‐reaction,...

Abstract Quaternized poly(2,6‐dimethylphenylene oxide) materials (PPOs) containing clicked 1,2,3‐triazoles were first prepared through Cu I ‐catalyzed “click chemistry” to improve the anion transport in anion‐exchange membranes (AEMs). Clicked incorporated into AEMs provided more sites form efficient and continuous hydrogen‐bond networks between water/hydroxide triazole for transport. Higher water uptake was observed these membranes. Thus, showed an impressive enhancement of hydroxide...