Molecular Pumps and Motors

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(15), С. 5569 - 5591

Опубликована: Апрель 8, 2021

Pumps and motors are essential components of the world as we know it. From complex proteins that sustain our cells, to mechanical marvels power industries, much take for granted is only possible because pumps motors. Although molecular have supported life eons, it recently chemists made progress toward designing building artificial forms microscopic machinery present in nature. The advent machines has scientists an unprecedented level control over relative motion molecules through development kinetically controlled, away-from-thermodynamic equilibrium chemistry. We outline history motors, focusing specifically on innovations enable design synthesis central this Perspective. A key insight connecting biomolecular physical motions by which these carry out their function unambiguously at every instant. operation can be described trajectory thermodynamics, a theory based work Onsager, grounded firm foundation principle reversibility. Free energy derived from thermodynamically non-equilibrium reactions favors some reaction pathways others. By with kinetic asymmetry, one engineer potential landscapes harness external drive formation maintenance geometries component parts away-from-equilibrium, would impossible achieve standard synthetic approaches.

Язык: Английский

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

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

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Future‐Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems

Advanced Materials, Год журнала: 2021, Номер 34(16)

Опубликована: Дек. 6, 2021

Diarylethene (DAE) photoswitch is a new and promising family of photochromic molecules has shown superior performance as smart trigger in stimulus-responsive materials. During the past few decades, DAE achieved leap from simple to functional developed toward validity universal switching building block. In recent years, introduction into an assembly system been attractive strategy that enables behavior blocks be manifested at level entire system, beyond unit itself. This assembly-based will bring many unexpected results promote design manufacture generation advanced Here, advances fabrication diarylethene materials science, chemistry, biomedicine are reviewed.

Язык: Английский

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Smart Photochromic Materials Triggered with Visible Light

European Journal of Organic Chemistry, Год журнала: 2022, Номер 2022(19)

Опубликована: Фев. 26, 2022

Abstract Molecular photoswitches reversibly convert the energy of light into a variety structural changes at molecular level. They can be integrated smart materials with broad range applicability. While most photochromic systems require UV for activation, application operational entirely within visible or NIR brings considerable benefits, such as biocompatibility, better penetration through material, propelling sunlight, possibility to design dual that are mutually activated frequencies two distinct functions. In this Review, we discuss relevant classes photoswitches, and demonstrate selection polymers, gels, porous materials, surfaces, energy‐storing other triggered light.

Язык: Английский

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Optical Phenomena in Molecule-Based Magnetic Materials

Chemical Reviews, Год журнала: 2024, Номер 124(9), С. 5930 - 6050

Опубликована: Апрель 30, 2024

Since the last century, we have witnessed development of molecular magnetism which deals with magnetic materials based on species, i.e., organic radicals and metal complexes. Among them, broadest attention was devoted to molecule-based ferro-/ferrimagnets, spin transition materials, including those exploring electron transfer, nanomagnets, such as single-molecule magnets (SMMs), qubits, stimuli-responsive materials. Their physical properties open application horizons in sensors, data storage, spintronics, quantum computation. It found that various optical phenomena, thermochromism, photoswitching characteristics, luminescence, nonlinear chiroptical effects, well responsivity external stimuli, can be implemented into Moreover, fruitful interactions these effects provide new cross-effects multifunctionality, enriching applications optical, electronic, devices. This Review aims show scope phenomena generated recent advances areas high-temperature photomagnetism, thermometry utilizing SMMs, addressability magneto-chiral dichroism, opto-magneto-electric multifunctionality. These findings are discussed context types accessible for classes

Язык: Английский

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Directing Coupled Motion with Light: A Key Step Toward Machine-Like Function

Chemical Reviews, Год журнала: 2021, Номер 121(21), С. 13213 - 13237

Опубликована: Сен. 17, 2021

Molecular photoactuators can control shape and chemical or physical properties of the responsive system they are embedded in. These effects usually mediated by supramolecular interactions be amplified to perform work at micro- macroscopic scale, for instance, in materials biomimetic systems. While many studies focus on observable outcome these events, photoresponsive structures also translate their conformational change molecular components against random Brownian motion. Stereochemical cascades amplify light-generated motion a distant moiety same molecule assembly, via conformationally restricted stereogenic elements. Being able conformation systems remotely provides prospects design smallest machines imaginable. This Focus Review emphasizes emergence directed, coupled remote functionalities triggered light-powered switches motors as tool topology function.

Язык: Английский

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Dynamic Control of a Multistate Chiral Supramolecular Polymer in Water

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(13), С. 6019 - 6027

Опубликована: Март 27, 2022

Natural systems transfer chiral information across multiple length scales through dynamic supramolecular interaction to accomplish various functions. Inspired by nature, many exquisite artificial have been developed, in which controlling the chirality holds key completing specific tasks. However, achieve precise and non-invasive control modulation of these remains challenging. As a stimulus, light can be used remotely with high spatiotemporal precision. In contrast common molecular switches, synthetic motor act as multistate chiroptical switch unidirectional rotation, offering major potential regulate more complex Here, we present light-driven motor-based polymer, intrinsic is transferred nanofibers, rotation motors governs morphology polymer. The resulting polymer also exhibits light-controlled aggregation-induced emission. These findings photochemically tunable system water pave way for developing motor-driven materials.

Язык: Английский

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Guest‐Driven Light‐Induced Spin Change in an Azobenzene Loaded Metal–Organic Framework

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(52), С. 27144 - 27150

Опубликована: Окт. 22, 2021

Stimuli-responsive materials that can be reversibly switched by light are of immense interest. Among them, photo-responsive spin crossover (SCO) complexes have great promises to combine the photoactive inputs with multifaceted outputs into switchable and devices. However, reversible control spin-state change photochromic guests is still challenging. Herein, we report an unprecedented guest-driven light-induced (GD-LISC) in a Hofmann-type metal-organic framework (MOF), [Fe(bpn){Ag(CN)2 }2 ]⋅azobenzene. (1, bpn=1,4-bis(4-pyridyl)naphthalene). The trans-cis photoisomerization azobenzene guest upon UV/Vis irradiation solid-state results remarkable magnetic changes wide temperature range 10-180 K. This finding not only establishes new switching mechanism for SCO complexes, but also paves way toward development generation materials.

Язык: Английский

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Enlightening dynamic functions in molecular systems by intrinsically chiral light-driven molecular motors

Chemical Society Reviews, Год журнала: 2023, Номер 52(17), С. 5875 - 5891

Опубликована: Янв. 1, 2023

Chirality is a fundamental property which plays major role in chemistry, physics, biological systems and materials science.

Язык: Английский

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Recent Progress in Photoresponsive Biomaterials

Molecules, Год журнала: 2023, Номер 28(9), С. 3712 - 3712

Опубликована: Апрель 25, 2023

Photoresponsive biomaterials have garnered increasing attention recently due to their ability dynamically regulate biological interactions and cellular behaviors in response light. This review provides an overview of recent advances the design, synthesis, applications photoresponsive biomaterials, including photochromic molecules, photocleavable linkers, photoreactive polymers. We highlight various approaches used control behavior these materials, modulation light intensity, wavelength, duration. Additionally, we discuss fields, drug delivery, tissue engineering, biosensing, optical storage. A selection significant cutting-edge articles collected years has been discussed based on structural pattern light-responsive performance, focusing mainly photoactivity azobenzene, hydrazone, diarylethenes, spiropyrans, design smart materials as most targeted desirable application. Overall, this highlights potential enable spatiotemporal processes opens up exciting opportunities for developing advanced with enhanced functionality.

Язык: Английский

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