Water‐Vapor Responsive Metallo‐Peptide Nanofibers DOI Open Access
Avishek Dey, Elma Naranjo, Ranajit Saha

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(47)

Опубликована: Авг. 13, 2024

Short peptides are versatile molecules for the construction of supramolecular materials. Most reported peptide materials hydrophobic, stiff, and show limited response to environmental conditions in solid-state. Herein, we describe a design strategy minimalistic metallo-peptide nanofibers that, depending on their sequence, change stiffness, or reversibly assemble solid-state, changes relative humidity (RH). We tested series histidine (H) containing dipeptides with varying hydrophobicity, XH, where X is G, A, L, Y (glycine, alanine, leucine, tyrosine). The one-dimensional fiber formation supported by metal coordination dynamic H-bonds. Solvent were identified GH/Zn AH/Zn formed gels that upon air-drying gave rise nanofibers. Upon exposure nanofiber networks increasing RH, reduction stiffness was observed fibers (dis-)assembled at 60-70 % RH driven rebalancing hydrogen bonding interactions between water. When these deposited surface polyimide films exposed peptide/water-vapor solid-state mechanically transferred polymer film, leading rapid reversible folding-unfolding films, thus demonstrating RH-responsive actuation.

Язык: Английский

Photoresponsive Supramolecular Polymers: From Light‐Controlled Small Molecules to Smart Materials DOI Creative Commons
Fan Xu, Ben L. Feringa

Advanced Materials, Год журнала: 2022, Номер 35(10)

Опубликована: Окт. 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.

Язык: Английский

Процитировано

163
Stimuli-responsive synthetic helical polymers DOI Creative Commons
María Lago‐Silva, Manuel Fernández‐Míguez, Rafael Rodríguez

и другие.

Chemical Society Reviews, Год журнала: 2023, Номер 53(2), С. 793 - 852

Опубликована: Дек. 18, 2023

Synthetic dynamic helical polymers (supramolecular and covalent) foldamers share the helix as a structural motif.

Язык: Английский

Процитировано

54
Supramolecular gels – a panorama of low-molecular-weight gelators from ancient origins to next-generation technologies DOI Creative Commons
David K. Smith

Soft Matter, Год журнала: 2023, Номер 20(1), С. 10 - 70

Опубликована: Дек. 11, 2023

Supramolecular gels, self-assembled from low-molecular-weight gelators (LMWGs), have a long history and bright future.

Язык: Английский

Процитировано

50
From Photoinduced Supramolecular Polymerization to Responsive Organogels DOI Creative Commons
Fan Xu, Lukas Pfeifer, Stefano Crespi

и другие.

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(15), С. 5990 - 5997

Опубликована: Апрель 8, 2021

Controlling supramolecular polymerization by external stimuli holds great potential toward the development of responsive soft materials and manipulating self-assembly at nanoscale. Photochemical switching offers prospect regulating structure properties systems in a noninvasive reversible manner with spatial temporal control. In addition, this approach will enhance our understanding mechanisms; however, control molecular assembly light remains challenging. Here we present photoresponsive stiff-stilbene-based bis-urea monomers whose

Язык: Английский

Процитировано

100
A Mortise‐and‐Tenon Joint Inspired Mechanically Interlocked Network DOI
Dong Zhao, Zhaoming Zhang, Jun Zhao

и другие.

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(29), С. 16224 - 16229

Опубликована: Май 12, 2021

Abstract Mortise‐and‐tenon joints have been widely used for thousands of years in wooden architectures virtue their artistic and functional performance. However, imitation similar structural mechanical design philosophy to construct mechanically adaptive materials at the molecular level is a challenge. Herein, we report mortise‐and‐tenon joint inspired interlocked network (MIN), which [2]rotaxane crosslink not only mimics structure, but also reproduces its function modifying properties MIN. Benefiting from hierarchical energy dissipative ability along with controllable intramolecular movement crosslink, resultant MIN simultaneously exhibits notable adaptivity stability single system, as manifested by decent stiffness, strength, toughness, deformation recovery capacity.

Язык: Английский

Процитировано

88
Manipulating Nanoparticle Aggregates Regulates Receptor–Ligand Binding in Macrophages DOI
Yuri Kim, Hee Joon Jung, Yun‐Jung Lee

и другие.

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(13), С. 5769 - 5783

Опубликована: Март 11, 2022

The receptor–ligand interactions in cells are dynamically regulated by modulation of the ligand accessibility. In this study, we utilize size-tunable magnetic nanoparticle aggregates ordered at both nanometer and atomic scales. We flexibly anchor tunable sizes over cell-adhesive RGD (Arg-Gly-Asp)-active material surface while maintaining density dispersed ligands accessible to macrophages constant. Lowering dispersity increasing aggregate size constant facilitates binding integrin receptors ligands, which promotes adhesion macrophages. high dispersity, distant manipulation lift (which increases accessibility) stimulates available under augment macrophage adhesion-mediated pro-healing polarization vitro vivo. low control drop decreases repels away from aggregates, thereby suppressing adhesion, inflammatory polarization. Here, present "accessible dispersity" as a novel fundamental parameter that regulates binding, can be reversibly manipulated decreasing Limitless tuning dimensions morphology offer further insight into regulation host cells.

Язык: Английский

Процитировано

53
Consequences of Vibrational Strong Coupling on Supramolecular Polymerization of Porphyrins DOI Creative Commons

Kripa Joseph,

Bas de Waal,

Stef A. H. Jansen

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(17), С. 12130 - 12137

Опубликована: Апрель 20, 2024

Supramolecular polymers display interesting optoelectronic properties and, thus, deploy multiple applications based on their molecular arrangement. However, controlling supramolecular interactions to achieve a desirable organization is not straightforward. Over the past decade, light-matter strong coupling has emerged as new tool for modifying chemical and material properties. This novel approach also been shown alter morphology of by vibrational bands solute solvent optical modes Fabry-Perot cavity (vibrational coupling, VSC). Here, we study effect VSC polymerization chiral zinc-porphyrins (

Язык: Английский

Процитировано

16
Photo-crosslinking polymers by dynamic covalent disulfide bonds DOI Creative Commons
Bianka Sieredzińska, Qi Zhang, Keimpe J. van den Berg

и другие.

Chemical Communications, Год журнала: 2021, Номер 57(77), С. 9838 - 9841

Опубликована: Янв. 1, 2021

A simple and general strategy to construct photo-crosslinkable polymers by introducing sidechain 1,2-dithiolanes based on natural thioctic acid is presented.

Язык: Английский

Процитировано

51
Photoswitchable Liquid‐to‐Solid Transition of Azobenzene‐Decorated Polysiloxanes DOI Creative Commons
Joost J. B. van der Tol, Tom A. P. Engels, Ruth Cardinaels

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(36)

Опубликована: Май 19, 2023

Abstract Having external control over fundamental properties of polymers, such as their physical state, is a crucial yet challenging design criterion for smart materials. Liquifying polymers through photochemical events has significantly advanced various research lines. However, the opposite process solidifying polymer that intrinsically in liquid state reversibly with light unattained. Herein, light‐controlled liquid‐to‐solid transition polysiloxanes reported, which are decorated small number azobenzene‐functionalized ureidopyrimidinone (Azo‐UPy) pendants. The UPy moieties toggle between intra‐ and intermolecular hydrogen bonding via trans → cis photoisomerization azobenzene. This transformation on molecular level leads to formation strong supramolecular cross‐links, which, turn, results macroscopic solidification material. photoswitching event enables post‐synthetic tailoring polymers’ mechanical properties, thus providing an alternative addition plasticizers or hardeners. Moreover, adhesion strength photochromic material increases by factor 6 upon exposure UV light. In situ illumination during rheological measurements reveals delicate interplay wavelength dependent penetration depth efficiency. conceptually new (de)bonding demand strategy paves way creating light‐responsive materials exciting applications temporal adhesion, recycling, lithography, processing.

Язык: Английский

Процитировано

21
How to Determine the Role of an Additive on the Length of Supramolecular Polymers? DOI Creative Commons
Elisabeth Weyandt, Mathijs F. J. Mabesoone,

Lafayette N. J. de Windt

и другие.

Organic Materials, Год журнала: 2020, Номер 02(02), С. 129 - 142

Опубликована: Апрель 1, 2020

In polymer chemistry, modulation of sequence and control over chain length are routinely applied to alter fine-tune the properties covalent (co)polymers. For supramolecular polymers, same principles underlying this have not been fully elucidated up date. Particularly, rational molecular weight in dynamic polymers is trivial, especially when a cooperative mechanism operative. We start review by summarizing how molecular-weight has achieved seminal examples field polymerizations. Following this, we propose classify avenues taken weights focus on polymerization as most challenging terms control. use mass-balance equilibrium model predict nature interaction an additive B with monomers component A affects degree aggregation polymerization. put forward classification system that distinguishes between acting capper, sequestrator, comonomer, or intercalator. also highlight experimental methods probe processes, type information they provide relation aggregation, can be used role B. The guidelines delineated assess serve reevaluate exciting systems present current literature contribute broaden understanding multicomponent systems.

Язык: Английский

Процитировано

40