Light-regulated morphology control in supramolecular polymers DOI
Anurag Mukherjee, Goutam Ghosh

Nanoscale, Journal Year: 2023, Volume and Issue: 16(5), P. 2169 - 2184

Published: Dec. 20, 2023

Stimuli-responsive materials have gained significant recent interest owing to their versatility and wide applications in fields ranging from science biology. In the majority of examples, external stimuli, including light, act as a remote source energy depolymerize/deconstruct certain nanostructures or provide for exploring functional features. However, there is little emphasis on creation precise control these materials. Although progress has been made last few decades understanding pros cons various directional non-covalent interactions specific molecular recognition ability, it only past that focus shifted toward controlling dimension, dispersity, other macroscopic properties supramolecular assemblies. Control over morphology polymers extremely crucial not material they manifest but also effective with biological systems potential application field biomedicine. This could effectively be achieved using photoirradiation which demonstrated by some reports. The concept such offers broad scope designing versatile stimuli-responsive structure-property control. yet compilation focuses present subject employing light impact regulate categorize motif easy understanding. this review, we collated examples how irradiation can tune categorized them based chemical transformation

Language: Английский

Thermally Activated Photochromism: Realizing Temperature‐Gated Triphenylethylene Photochromic Materials DOI
Yuxin Xiao,

Mingyao Shen,

Jiahui Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(24)

Published: Feb. 21, 2024

Abstract Photochromic materials have drawn enormous attention for their potential applications in optical memory storage and photoswitchable molecular devices. Although great achievements photochromic been fulfilled, it is still a big challenge to realize gated photochromism ready tunable properties. In previous studies, rare examples of are reported. Herein, three triarylethylene derivatives FTrPE‐ o I, ClTrPE‐ I BrTrPE‐ with reversible thermally activated characteristics designed synthesized, whose crystalline powders show no until treatments relative temperature. Temperature acts as gate switch the properties by switching aggregation state from melted amorphous. With this progress, broader structural realm becomes accessible materials, which can now be synthetically tailored advanced future applications, e.g., research on machines switches, studies photoisomerization mechanisms, or generation thermal tracing materials. To showcase these distinct encrypted printing, trace monitoring well multi‐level anticounterfeiting demonstrated, addition comprehensive photochemical study all compounds.

Language: Английский

Citations

26
Visible-Light-Activated Heteroaryl Azoswitches: Toward a More Colorful Future DOI
Tongtong Dang, Zhaoyang Zhang, Tao Li

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(29), P. 19609 - 19620

Published: July 11, 2024

Azobenzenes (Ph-N═N-Ph) are known as the most widely studied molecular photoswitches, and recent rise of azoheteroarenes (Het-N═N-Ph or Het-N═N-Het) offers great opportunities to advance this already mature field. A common limitation is that azo-switches generally require harmful UV light for activation, which hinders their application across various fields. Despite efforts in developing visible-light azobenzenes over past few decades, potential heteroaryl azoswitches remains largely unexplored. This Perspective summarizes state-of-the-art advancements azoswitches, covering design strategies, structure-property relationship, applications. We highlight distinctive advantages research development switches. Furthermore, we discuss challenges emerging field propose solutions address crucial issues such spectral red-shift thermal half-life. Through paper, aim provide inspiration further exploration field, anticipation growing prosperity bright future azoheteroarene photoswitches.

Language: Английский

Citations

23
Azobenzene-containing polymer for solar thermal energy storage and release: Advances, challenges, and opportunities DOI
Xingtang Xu, Jie Feng, Wenying Li

et al.

Progress in Polymer Science, Journal Year: 2023, Volume and Issue: 149, P. 101782 - 101782

Published: Dec. 27, 2023

Language: Английский

Citations

26
Recent progress in photoinduced transitions between the solid, glass, and liquid states based on molecular photoswitches DOI Creative Commons
Keiichi Imato,

Naoki Kaneda,

Yousuke Ooyama

et al.

Polymer Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 16, 2024

Abstract Photoinduced transitions between the solid, glass, and liquid states based on molecular photoswitches promise a wide variety of applications. Photoswitchable adhesives are representative examples expected to contribute material recycling for sustainable future in era composite materials due strong bonding on-demand photo-induced debonding with minimal damage adherends. Only few known undergo these transitions, but recent progress, mainly azobenzene, has been remarkable. Here, we review photoinduced small molecules polymers over approximately decade systematically discuss designs, mechanisms, applications, merits demerits, challenges each photoswitch whole field. We hope this provides useful information, inspiration, ideas development field expansion its

Language: Английский

Citations

12
Photoswitchable Imines Drive Dynamic Covalent Systems to Nonequilibrium Steady States DOI Creative Commons
Jiarong Wu, Jake L. Greenfield

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(30), P. 20720 - 20727

Published: July 18, 2024

Coupling a photochemical reaction to thermal exchange process can drive the latter nonequilibrium steady state (NESS) under photoirradiation. Typically, systems use separate motifs for photoresponse and equilibrium-related processes. Here, we show that photoswitchable imines fulfill both roles simultaneously, autonomously driving dynamic covalent system into NESS continuous light irradiation. We demonstrate this using transimination reactions, where

Language: Английский

Citations

12
Arylazobenzimidazoles: versatile visible-light photoswitches with tuneable Z-isomer stability DOI Creative Commons
Sophie A. M. Steinmüller,

Magdalena Odaybat,

Giulia Galli

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(14), P. 5360 - 5367

Published: Jan. 1, 2024

Arylazobenzimidazoles are photoswitchable privileged structures in medicinal chemistry. Experimental and theoretical studies identified compounds with visible light near-quantitative bidirectional photoswitching highly tunable Z -isomer stability.

Language: Английский

Citations

9
Mechanochromic Displays Based on Photoswitchable Cholesteric Liquid Crystal Elastomers DOI Creative Commons
Lucas Daniel Chiba de Castro, Johan Lub, Osvaldo N. Oliveira

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)

Published: Aug. 27, 2024

Stimuli responsive optical materials are attractive for many areas, from healthcare to art design. However, creating intricate color-changing patterns visual information is still a challenge. This work describes the preparation of mechanochromic structural colored pictures imprinted in cholesteric liquid crystal elastomers by using chiral isosorbide molecular photoswitch. The photoswitch contains photoisomerizable cinnamate moiety and was incorporated main chain oligomer with photopolymerizable acrylate end groups. After coating, film irradiated ultraviolet (UV) light air causing E/Z isomerization units leading redshift color film. A grayscale photomask used spatially control photoisomerization reaction imprint colorful such as portraits landscapes, films high resolution. Photopolymerization nitrogen atmosphere led elastomer striking colors that blueshift upon strain. sharp details were preserved even under deformation system returned initial state strain removal. Our offers simple approach prepare stimuli polymers unprecedented complexity.

Language: Английский

Citations

9
Aurones: Unexplored Visible‐Light Photoswitches for Aqueous Medium DOI Creative Commons
Daria V. Berdnikova

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(20)

Published: Feb. 2, 2024

The development of synthetically accessible photoswitches showing an efficient performance in aqueous medium has recently become urgent task due to the rapid progress photopharmacology and novel biomedical applications. In response this challenge, work, aurone derivatives are introduced as a class visible-light for medium. general, aurones exhibit superior water, including significantly higher quantum yields, compared with other indigoid (hemithioindigo hemiindigo). Especially remarkable half-lives photoinduced E-isomers reaching up 7 years. Further modification scaffold substituents that increase water solubility does not affect most photoswitching characteristics even improves some them. highly advantageous property profile make them perfect platform design light-controllable systems areas requiring

Language: Английский

Citations

6
Arylazopyrazoles for Conjugation by CuAAC Click Chemistry DOI

Alisa-Maite A. Kauth,

Rebecca Niebuhr,

Bart Jan Ravoo

et al.

The Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 89(9), P. 6371 - 6376

Published: April 15, 2024

Molecular photoswitches are increasingly being implemented in bioactive compounds and responsive materials. For this purpose, must be coupled to a wide variety of substrates scaffolds. We present library "clickable" arylazopyrazoles (AAPs), which can conjugated by Cu-catalyzed alkyne azide cycloaddition (CuAAC). All synthesized AAP alkynes show good photostationary states (at least 88%) long half-life times the Z-isomer (18 108 h). The azides decompose upon exposure ultraviolet (UV) irradiation, but after CuAAC, all AAPs exhibit photophysical properties.

Language: Английский

Citations

4
Photoswitchable Carbamazepine Analogs for Non‐Invasive Neuroinhibition In Vivo DOI Creative Commons
Luisa Camerin, Galyna Maleeva, Alexandre M. J. Gomila

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(38)

Published: June 18, 2024

A problem of systemic pharmacotherapy is off-target activity, which causes adverse effects. Outstanding examples include neuroinhibitory medications like antiseizure drugs, are used against epilepsy and neuropathic pain but cause side There a need drugs that inhibit nerve signals locally on-demand without affecting other regions the body. Photopharmacology aims to address this with light-activated localized illumination in target organ. Here, we have developed photoswitchable derivatives widely prescribed drug carbamazepine. For purpose, expanded our method ortho azologization tricyclic meta/para N-bridged diazocine. Our results validate concept cryptoazologs (uniquely exemplified by Carbazopine-1) bring light Carbadiazocine (8), can be photoswitched between 400-590 nm (using violet LEDs halogen lamps) shows good drug-likeness predicted safety. Both compounds display activity vitro translucent zebrafish larvae. (8) also offers vivo analgesic efficacy (mechanical thermal stimuli) rat model simple compelling treatment demonstration non-invasive illumination.

Language: Английский

Citations

4