Stimuli responsive dynamic transformations in supramolecular gels

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(8), P. 5165 - 5200

Published: Jan. 1, 2021

Stimuli responsive dynamic changes in the networks of self-assembled gels result an alteration physical and chemical properties gel with time.

Language: Английский

---

Supramolecular Polymerization: A Conceptual Expansion for Innovative Materials

Progress in Polymer Science, Journal Year: 2020, Volume and Issue: 105, P. 101250 - 101250

Published: April 25, 2020

Language: Английский

---

Luminescence in Crystalline Organic Materials: From Molecules to Molecular Solids

Advanced Optical Materials, Journal Year: 2021, Volume and Issue: 9(13)

Published: April 30, 2021

Abstract Luminescent small, all‐organic molecules are of tremendous interest in materials and life science applications. Nevertheless, targeted design requires a basic understanding the excited state deactivation pathways themselves, modulations processes that occur solid state. This particularly concerns crystalline molecular solids, as here not only solid‐state rigidification contributes to these modulations, but specific intermolecular interactions well. Starting from properties, this work carefully disentangles all intramolecular factors radiative nonradiative solids provide guidelines for design.

Language: Английский

---

Self-Sorted, Random, and Block Supramolecular Copolymers via Sequence Controlled, Multicomponent Self-Assembly

Journal of the American Chemical Society, Journal Year: 2020, Volume and Issue: 142(16), P. 7606 - 7617

Published: April 1, 2020

Multicomponent supramolecular copolymerization promises to construct complex nanostructures with emergent properties. However, even two monomeric components, various possible outcomes such as self-sorted homopolymers, a random (statistical) copolymer, an alternate or block copolymer can occur, determined by their intermolecular interactions and monomer exchange dynamics hence structural prediction is extremely challenging. Herein, we target this challenge demonstrate unprecedented two-component sequence controlled manipulating thermodynamic kinetic routes in the pathway complexity of self-assembly constitutive monomers. Extensive molecular simulations provided useful mechanistic insights into rates free energy between monomers that dictate sequence. The fluorescent nature core-substituted naphthalene diimide has been further utilized characterize three sequences via Structured Illumination Microscopy (SIM).

Language: Английский

---

Emerging applications for living crystallization-driven self-assembly

Chemical Science, Journal Year: 2021, Volume and Issue: 12(13), P. 4661 - 4682

Published: Jan. 1, 2021

The use of crystallization as a tool to control the self-assembly polymeric and molecular amphiphiles in solution is attracting growing attention for creation non-spherical nanoparticles more complex, hierarchical assemblies. In particular, seeded growth method termed living crystallization-driven (CDSA) has been established an ambient temperature potentially scalable platform preparation low dispersity samples core-shell fiber-like or platelet micellar nanoparticles. Significantly, this permits predictable size, access branched segmented structures where functionality spatially-defined. Living CDSA operates under kinetic shows many analogies with chain-growth polymerizations organic monomers that afford well-defined covalent polymers controlled length except it covers much longer scale (ca. 20 nm 10 μm). applied rapidly expanding range crystallizable amphiphiles, which includes block copolymers charge-capped homopolymers, form assemblies crystalline cores solvated coronas. methods have also transposed wide variety π-stacking hydrogen-bonding species supramolecular processes "living polymerizations". article we outline main features then survey promising emerging applications resulting fields such nanomedicine, colloid stabilization, catalysis, optoelectronics, information storage, surface functionalization.

Language: Английский

---

Supramolecular Polymers – we've Come Full Circle

Israel Journal of Chemistry, Journal Year: 2020, Volume and Issue: 60(1-2), P. 33 - 47

Published: Jan. 1, 2020

Abstract Since the first polymers were discovered, scientists have debated their structures. Before Hermann Staudinger published brilliant concept of macromolecules, polymer properties generally believed to be based on colloidal aggregation small particles or molecules. From 1920 onwards, and macromolecules are synonymous with each other; i. e. materials made by many covalent bonds connecting monomers in 2 3 dimensions. Although supramolecular interactions between macromolecular chains evidently important, g. nylons, it was unheard proposing polymeric interaction Breakthroughs chemistry, however, showed that can molecules using strong directional secondary interactions; field emerged. In a way, we come full circle. this essay give personal story about birth polymers, special emphasis structures, way formation, dynamic nature bonding. The adaptivity has become major asset for novel applications, direction sustainable use but also biomedicine electronics as well self‐healing materials. lessons learned past years include aspects forecast bright future general particular. order tribute year celebrating 100 will show concepts apply only one important difference fascinating consequences: form chains.

Language: Английский

---

Solute–Solvent Interactions in Modern Physical Organic Chemistry: Supramolecular Polymers as a Muse

Journal of the American Chemical Society, Journal Year: 2020, Volume and Issue: 142(47), P. 19781 - 19798

Published: Nov. 11, 2020

Interactions between solvents and solutes are a cornerstone of physical organic chemistry have been the subject investigations over last century. In recent years, renewed interest in fundamental aspects solute-solvent interactions has sparked field supramolecular general that polymers particular. Although solvent effects recognized for long time, unique opportunities offer to gain insight into become clear relatively recently. The multiple hold polymeric structure together similar strength those solute solvent. cooperativity found ordered leads possibility amplifying these will shed light on extremely subtle solvation phenomena. As result, many exciting modern can be studied using polymers. Our aim is put progress historical context provide avenues toward more comprehensive understanding multicomponent systems.

Language: Английский

---

Deep Eutectic Supramolecular Polymers: Bulk Supramolecular Materials

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(29), P. 11871 - 11875

Published: April 15, 2020

Abstract Application of new strategies for supramolecular self‐assembly can significantly impact the properties and/or functions polymers. To realize a facial strategy development solvent‐free polymers in bulk, “deep eutectic solvents” were employed. Cyclodextrins and natural acids used to prepare deep ( DESP s). Deep solvents have special characteristics that endow s with unique macroscopic excellent processability. exhibit adhesion temperature‐dependent behavior originating from combined effects polymerization. Because are display interesting properties, they potential as adaptive materials.

Language: Английский

---

Photoresponsive Supramolecular Polymers: From Light‐Controlled Small Molecules to Smart Materials

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(10)

Published: Oct. 14, 2022

Photoresponsive supramolecular polymers are well-organized assemblies based on highly oriented and reversible noncovalent interactions containing photosensitive molecules as (co-)monomers. They have attracted increasing interest in smart materials dynamic systems with precisely controllable functions, such light-driven soft actuators, photoresponsive fluorescent anticounterfeiting light-triggered electronic devices. The present review discusses light-activated used their main photo-induced changes, e.g., geometry, dipole moment, chirality. Based these distinct formed by exhibit disassembly reassembly. As a consequence, polymerization, "depolymerization," regulation of the lengths topologies observed. Moreover, light-controlled functions polymers, actuation, emission, chirality transfer along length scales, highlighted. Furthermore, perspective challenges future opportunities is presented. Besides challenge moving from harmful UV light to visible/near IR avoiding fatigue, enabling biomedical applications, include actuators helical motion, light-modulated information transmission, optically recyclable materials, multi-stimuli-responsive systems.

Language: Английский

---

Slip‐Stacked J‐Aggregate Materials for Organic Solar Cells and Photodetectors

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(22)

Published: Oct. 19, 2021

Abstract Dye–dye interactions affect the optical and electronic properties in organic semiconductor films of light harvesting detecting optoelectronic applications. This review elaborates how to tailor these semiconductors for solar cells (OSCs) photodiodes (OPDs). While devices rely on similar materials, demands their are rather different, former requiring a broad absorption spectrum spanning from UV over visible up near‐infrared region latter an ultra‐narrow at specific, targeted wavelength. In order design satisfying demands, fundamental insights relationship provided depending molecular packing arrangement resultant coupling thereof. Based recent advancements theoretical understanding intermolecular between slip‐stacked dyes, distinguishing classical J‐aggregates with predominant long‐range Coulomb charge transfer (CT)‐mediated or ‐coupled J‐aggregates, whose red‐shifts primarily governed by short‐range orbital interactions, is suggested. Within this framework, aggregate structure functional representative classes dye aggregates analyzed most advanced OSCs wavelength‐selective OPDs, providing important into rational thin‐film materials.

Language: Английский

---