In this review, we survey the diversity of structures and functions which are encountered in advanced self-assembled nanomaterials. We highlight their flourishing implementations three active domains applications: biomedical sciences, information technologies, environmental sciences. Our main objective is to provide reader with a concise straightforward entry broad field by selecting most recent important research articles, supported some more comprehensive reviews introduce each topic....

Pumping iron: Double-threaded rotaxanes can be linked to coordination units and polymerized in the presence of iron or zinc ions. pH modulation triggers cooperative contractions (or extensions) individual rotaxanes, thus resulting an amplified motion muscle-like supramolecular chains with changes their contour lengths several micrometers (see picture).

Abstract Cells display a range of mechanical activities generated by motor proteins powered through catalysis 1 . This raises the fundamental question how acceleration chemical reaction can enable energy released from that to be transduced (and, consequently, work done) molecular catalyst 2–7 Here we demonstrate molecular-level transduction force 8 in form contraction and re-expansion cross-linked polymer gel driven directional rotation artificial catalysis-driven 9 motors. Continuous 360°...

Survival of the fittest: Self-assemblies made dynamic block copolymers (dynablocks) can self-replicate by catalyzing formation their own building blocks. Moreover, in competition experiments, differential thermodynamic stabilities and autocatalytic efficiencies these self-assemblies lead to sigmoid growth most efficient self-replicator depletion its competitors.

To design the next generation of so-called "smart" materials, researchers will need to develop chemical systems that respond, adapt, and multitask. Because many these features occur in living systems, we expect such advanced artificial be inspired by nature. In particular, new materials should ultimately combine three key properties life: metabolism, mutation, self-replication. this Account, discuss our endeavors toward functional materials. First, focus on dynamic molecular libraries. These...

The implementation of artificial molecular machines in polymer science is an important objective that challenges chemists and physicists order to access entirely new class smart materials. To design such systems, the amplification a mechanical actuation from nanoscale up macroscopic response bulk material central issue. In this article we show bistable [c2]daisy chain rotaxanes (i.e., muscles) can be linked into main-chain Upy-based supramolecular polymers. We then reveal by depth...

Triarylamine molecules and triarylamine-based covalent polymers have been extensively investigated for more than 60 years in academics industry because of their intriguing electronic optical characteristics. However, despite the profusion studies made on these derivatives, only very recently first examples supramolecular based triarylamine motif described literature. Specifically, our research group has shown that, by adding supplementary hydrogen bonding moieties such as amide functions...

The implementation of molecular machines in polymer science is high interest to transfer mechanical motions from nanoscale macroscale order access new kinds active devices and materials. Toward this objective, thermodynamic topological aspects need be explored for reaching efficient systems capable producing a useful work. In paper we describe the branched polymerization pH-sensitive bistable [c2] daisy chain rotaxanes by using copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition ("click...

Organic materials exhibiting metallic behavior are promising for numerous applications ranging from printed nanocircuits to large area electronics. However, the optimization of electronic conduction in organic metals such as charge-transfer salts or doped conjugated polymers requires high crystallinity, which is detrimental their processability. To overcome this problem, combination properties metal-like with mechanical soft self-assembled systems attractive but necessitates absence...

Open AccessCCS ChemistryMINI REVIEW1 Apr 2019[c2]Daisy Chain Rotaxanes as Molecular Muscles Antoine Goujon, Emilie Moulin, Gad Fuks and Nicolas Giuseppone Goujon SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg BP 84047, cedex 2 (France) , Moulin *Corresponding author: E-mail Address: [email protected] https://doi.org/10.31635/ccschem.019.20180023 SectionsAboutAbstractPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail...

A hydrophobic light-driven rotary motor is functionalized with two 18-crown-6 macrocycles and incorporated into phospholipid bilayers. In the presence of this molecular construct, fluorescence assays patch clamp experiments show formation selective alkali ion channels through membrane. Further, they reveal a strongly accelerated transport mechanism under light irradiation. This increase fractional activity (up to 400%) attributed out-of-equilibrium actuation dynamics motors, which help...

A unidirectional light-driven rotary motor was looped in a figure-of-eight molecule by linking two polymer chains between its stator and rotor parts. By properly tuning the size of these linkers, clockwise rotation under UV light shown to create conformationally strained twists chains, this tensed conformation, energy stored molecular object sufficient trigger reverse back fully relaxed state. The functioning principle motorized device appears very similar that macroscopic whirligig crafts...

As an especially unique target for chemical synthesis, diazonamide A has the potential to be constructed through a plethora of synthetic routes, each attended by different challenges and opportunities discovery. In this article, we detail our second total synthesis sequence entirely distinct from that employed in first campaign, one whose success required development several special strategies tactics. We also disclose complete studies regarding biology its structural congeners, more fully...

Sc(OTf)(3) efficiently catalyzes the self-sufficient transimination reaction between various types of C=N bonds in organic solvents, with turnover frequencies up to 3600 h(-)(1) and rate accelerations 6 x 10(5). The mechanism crossover mixtures amines imines is studied, comparing parallel individual reactions coupled equilibria. intrinsic kinetic parameters for isolated cannot simply be added when several components are mixed, behavior system agrees presence a unique mediator that...

The constitutional recomposition of a dynamic library imines displays complex behavior under the effect two parameters, acidity and temperature. A qualitative analysis quantitative data is presented. results illustrate response such system to physical stimulus (temperature) chemical effector (H+), thus demonstrating its adaptive pressure external factors. They also point possibility modulating given functional property (optical, electronic, ionic) by induced specific trigger. Such features...

Let there be more light: Triarylamine-based building blocks respond to visible-light exposure by the formation of cationic radicals that hierarchically self-assemble into molecular wires, which in turn combine within larger fibers (see picture). The stimuli-responsive supramolecular scaffold, is created charge transfer and reversibly broken up heating, prevents quenching holes wires.

A dynamic combinatorial library has been designed to produce a set of constituents among which one is able self-complementarily direct its duplication. The overall molecular distribution in the evolves along both kinetic and thermodynamic biases, leading amplification species that reproduces most efficiently depletion other competitors.