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...

A three-component nanocapsule-based system allows monitoring the health cycle of coatings <italic>via</italic> autonomous visual highlighting damages and reversible erasing through healing.

Abstract Highly disperse copper nanoparticles immobilized on carbon nanomaterials (CNMs; graphene/carbon nanotubes) were prepared and used as a recyclable reusable catalyst to achieve Cu I ‐catalyzed [3+2] cycloaddition click chemistry. Carbon with N ‐heterocyclic carbene (NHC)‐Cu complexes from an imidazolium‐based show excellent stability including high efficiency at low loading. The catalytic performance evaluated in solution bulk shows that both types of Cu‐CNMs can function effective...

A facile and robust approach is provided for the synthesis of highly dispersed copper nanoparticles immobilized onto graphene nanosheets, useful as a recyclable reusable heterogeneous catalyst with excellent catalytic activity to achieve Cu(I)-catalyzed [3+2] cycloaddition 'click' chemistry.

We present a comprehensive investigation of mechanical properties supramolecular polymer networks with rationally developed multistrength hydrogen-bonding interactions. Self-healing poly(dimethylsiloxane) (PDMS)-based elastomers varying elasticity, fracture toughness, and the ability to dissipate strain energy through reversible breakage re-formation interactions were obtained. By changing ratio between isophorone diisocyanate (IU), 4,4′-methylenebis(cyclohexyl isocyanate) (MCU),...

The concept of self-healing polymers requires fast and efficient cross-linking processes, ideally based on catalytic reactions. We investigate autocatalytic effects in processes the copper(I)-catalyzed alkyne–azide "click" cycloaddition reaction (CuAAC), taking advantage 1,3-triazole rings formed during CuAAC-based cross-linking, which act as ligands for subsequent "click"-reactions turn accelerating rate CuAAC-reactions. Catalysis reactions multivalent polymeric alkynes azides (nine atactic...

Abstract Systematic investigations on the Cu(I)‐catalyzed “click” reaction between a three‐arm star polymer and low‐molecular‐weight alkynes are described. Liquid trivalent ( 2 – 7 ) reacted either with monovalent azidotelechelic polyisobutylene 1b $ \overline M_{\rm n} = 1900 g mol −1 , PDI 1.3) in solution, or 1a 4000 1.3). A significant autoacceleration is observed leading to increased rates of mono‐, di‐, trisubstituted alkynes. Reaction solvent‐free state proved be significantly faster...

Abstract 3D printing of linear and three‐arm star supramolecular polymers with attached hydrogen bonds their nanocomposites is reported. The concept based on hydrogen‐bonded polymers, known to form nano‐sized micellar clusters. Printability reversible thermal‐ shear‐induced dissociation a polymer network, which generates stable self‐supported structures after printing, as checked via melt‐rheology X‐ray scattering. poly(isobutylene)s PIB‐B2 ( M n = 8500 g mol −1 ), PIB‐B3 16 000...

We elucidate the properties of unentangled telechelic poly(isobutylene) (PIB) chains in bulk forming dynamic micellar networks mediated by endgroups capable hydrogen-bonding and π–π interactions. The effects molecular architecture type endgroup on are studied a combination small-angle X-ray scattering (SAXS), rheology, low-resolution NMR, dielectric spectroscopy (DS). It is found that star-shaped molecules form more time-stable with larger somewhat distantly arranged aggregates compared to...

Strategies to compensate material fatigue are among the most challenging issues, being prominently addressed by use of nano- and microscaled fillers, or via new chemical concepts such as self-healing materials. A capsule-based is reported, where adverse effect reduced tensile strength due embedded capsules counterbalanced a graphene-based filler, latter additionally acting catalyst for reaction. The concept based on "click"-based chemistry, universal methodology efficiently link components...

We correlate the terminal relaxation of supramolecular polymer networks, based on unentangled telechelic poly(isobutylene) linear chains forming micellar end-group clusters, with microscopic chain dynamics as probed by proton NMR. For a series samples increasing molecular weight, we find quantitative agreement between times and their activation energies provided rheology This finding corroborates validity transient-network model special case sticky Rouse model, dismisses more dedicated...

Hyperbranched azide- and alkyne-functionalized poly(isobutylene)s (PIBs, Mn = 25 200–35 400 g mol−1) suitable for crosslinking at room temperature via the copper-catalyzed alkyne–azide "click" cycloaddition reaction (CuAAC) are reported, aiming design of improved reactions novel self-healing materials. Based on low glass transition (Tg) high molecular mobility hyperbranched PIBs was linked with an efficient chemistry while introducing reactive endgroups into polymer tuning architecture...

Self-healing polymer coatings are an emerging class of smart materials. Upon mechanical damage the material properties may be restored by self-healing, which can triggered externally, e.g., increased temperature. An alternative approach relies on embedding capsules with repair agents into polymers, rupture is induced damage, and release triggers self-repair reaction. The work at hand presents in situ Raman spectroscopic investigations reaction dynamics such self-healing coatings. Analysis...

A simple and unique damage-sensing tool mediated by a Cu(<sc>i</sc>)-catalyzed [3+2] cycloaddition reaction is reported, where fluorogenic “click”-reaction highlights physical damage strong fluorescence increase accompanied <italic>in situ</italic> monitoring of localized self-healing.

Investigation of the curing kinetics crosslinking reactions and development optimized catalyst systems is importance for preparation self-healing nanocomposites, able to significantly extend their service lifetimes. Here we study different modified low molecular weight multivalent azides a capsule-based approach, where mediated by graphene-supported copper-nanoparticles, trigger “click”-based trivalent alkynes. When monitoring reaction via reactive dynamic scanning calorimetry (DSC), it was...

The achievement of self-healing (SH) under ambient conditions (low temperature, no external input energy) still presents a significant area research, and is enabled<italic>via</italic>“click”-type crosslinking reactions.

A series of novel poly(isobutylene)-based stable ionic liquids (PIB-ILs) with strongly temperature dependent nano- and mesostructures is reported. The molecular design relies on the use a liquid polymer an liquid-head-group, introducing properties by both polymeric chain as well (IL) head-group thus enabling terminal flow in range which cannot be addressed classical ILs respect to potential self-healing materials. Modifying anchored cation anion weight attached chain, nanostructure...