Visible‐Light‐Driven [2+2] Photocycloaddition in Self‐Assembled State for Time‐Resolved Information Encryption DOI Open Access
Meixia He, C. G. Ding, Zhiyuan Han

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 22, 2025

Abstract Achieving time‐resolved information encryption is crucial for advanced functional materials but remains a formidable challenge. Photoresponsive supramolecular assemblies have gained attention as promising candidates in this area. This work presents unique strategy that employs α ‐cyanostilbenes to construct photoresponsive which enable finely regulating fluorescence color and photoresponse kinetics, facilitating effective encryption. Three 1 – 3 are designed by the combination of electron donor 3,4‐ethoxylene dioxythiophene appended benzaldehyde with acceptor phenylacetonitrile different substituents. All three compounds undergo reversible Z/E isomerization CH CN under 420 254 nm light irradiation. Interestingly, while CN/H 2 O high water content (95%), these found be able self‐assemble into spherical reduced molecular distances. Remarkably, upon exposure visible light, [2+2] cycloadditions occur within assemblies, exhibiting distinct kinetics variations due formation cycloaddition products, confirmed H NMR spectroscopy, high‐resolution mass spectrometry, single crystal structures. Furthermore, their changes demonstrate potential applications hydrogel‐based photo‐patterning. research offers compelling designing visible‐light‐driven fluorescent switching high‐level beyond.

Language: Английский

Photoswitchable diarylethenes: From molecular structures to biological applications DOI
Ziyong Li,

Xiaoyan Zeng,

Caimin Gao

et al.

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 497, P. 215451 - 215451

Published: Sept. 18, 2023

Language: Английский

Citations

80
Visible light-responsive materials: the (photo)chemistry and applications of donor–acceptor Stenhouse adducts in polymer science DOI Creative Commons
Michèle Clerc, Sara Sandlass, Omar Rifaie‐Graham

et al.

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(23), P. 8245 - 8294

Published: Jan. 1, 2023

Donor-acceptor Stenhouse adduct (DASA) photoswitches have gained a lot of attention since their discovery in 2014. Their negative photochromism, visible light absorbance, synthetic tunability, and the large property changes between photoisomers make them attractive candidates over other commonly used for use materials with responsive or adaptive properties. The development such translation into advanced technologies continues to widely impact forefront research, DASAs thus attracted considerable interest field visible-light molecular switches dynamic materials. Despite this interest, there been challenges understanding complex behavior context both small molecule studies Moreover, incorporation polymers can be challenging due incompatibility conditions most common polymerization techniques. In review, therefore, we examine critically discuss recent developments DASA-containing polymers, aiming at providing better interplay properties constituents (matrix photoswitch). first part summarizes current DASA design switching second section discusses strategies materials, methods studying We also emerging applications polymeric ranging from light-responsive drug delivery systems, photothermal actuators, sensors photoswitchable surfaces. Last, summarize venture on steps required explore novel systems expand functional application opportunities polymers.

Language: Английский

Citations

59
Stimuli‐responsive fluorescent hydrogels: Strategies and applications DOI Creative Commons

Mengying Lei,

Qian Wang, Ruirui Gu

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(1)

Published: Jan. 12, 2024

Abstract Stimuli‐responsive fluorescent hydrogels are three‐dimensional networked polymeric materials with tunable luminescence and dynamic properties, which play an important role as a water‐rich soft material in the fields of information encryption, bionic actuation, bioimaging, environmental monitoring, luminescent materials. Compared conventional hydrogels, their unique properties allow visualization microscopic dynamics within polymer network. By rational inclusion motifs, such photoswitches, AIEgens, lanthanide complexes, host–guest these endowed tunability emission, shape, phase time space response to effectors. In this review, we summarize fabrication strategies that mainly used by recently reported stimuli‐responsive applications

Language: Английский

Citations

31
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

29
Integrating molecular photoswitch memory with nanoscale optoelectronics for neuromorphic computing DOI Creative Commons
David Alcer, Nelia Zaiats, Tine Lynfort Jensen

et al.

Communications Materials, Journal Year: 2025, Volume and Issue: 6(1)

Published: Jan. 14, 2025

Abstract Photonic solutions are potentially highly competitive for energy-efficient neuromorphic computing. However, a combination of specialized nanostructures is needed to implement all neuro-biological functionality. Here, we show that donor-acceptor Stenhouse adduct dyes integrated with III-V semiconductor nano-optoelectronics have combined excellent functionality bio-inspired neural networks. The dye acts as synaptic weights in the optical interconnects, while provide neuron reception, interpretation and emission light signals. These can reversibly switch from absorbing non-absorbing states, using specific wavelength ranges. Together, they robust predictable switching, low energy thermal reset memory dynamic range days sub-seconds allows both short- long-term operation at natural timescales. Furthermore, do not need electrical connections, on-chip integration simple. We illustrate individual nanowire photodiodes well arrays. Based on experimental performance metrics, our solution capable operating an anatomically validated model insect brain navigation complex.

Language: Английский

Citations

3
Hypoxia‐Responsive Photosensitizer Targeting Dual Organelles for Photodynamic Therapy of Tumors DOI
Yuqi Tang, Xing Wang,

Guanqun Zhu

et al.

Small, Journal Year: 2022, Volume and Issue: 19(1)

Published: Oct. 26, 2022

Abstract Developing safe and precise image‐guided photodynamic therapy is a challenge. In this study, the hypoxic properties of solid tumors are exploited to construct hypoxia‐responsive photosensitizer, TPA‐Azo . Introducing azo group into photosensitizer TPA‐BN with aggregation‐induced emission quenches its fluorescence. When nonfluorescent enters tumors, it reduced by overexpressed azoreductase generate fluorescent an amino that exhibits fluorescence‐activatable dual‐organelle (lipid droplets lysosomes) targeting. This design strategy provides basis for development photosensitizers.

Language: Английский

Citations

66
Energy‐Transfer Photocatalysis Using Lead Halide Perovskite Nanocrystals: Sensitizing Molecular Isomerization and Cycloaddition DOI
Meng Liu, Pan Xia, Guohui Zhao

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(35)

Published: July 7, 2022

Abstract A relatively new addition to the application portfolio of lead halide perovskites is photosensitize molecular triplets for a variety photochemical applications. Here we report visible‐light‐driven isomerization and cycloaddition organic molecules sensitized by spectrally‐tunable perovskite nanocrystals. We first demonstrate with stilbene as substrate molecule that photoisomerization can proceed efficiently rapidly either directly grafting carboxylated onto nanocrystal surfaces or using triplet–acceptor ligands energy relay. The relay approach more generally applicable it does not require anchoring‐group functionalization molecules, allowing us facilely extend series substituted ring‐closing diarylethene, well intermolecular [2+2] acenaphthylene. This study opens an avenue energy‐transfer photocatalysis

Language: Английский

Citations

46
Recent advances in small-molecule fluorescent photoswitches with photochromism in diverse states DOI

Yuzhen Wu,

Yuqing Zhu, Chuangye Yao

et al.

Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(44), P. 15393 - 15411

Published: Jan. 1, 2023

This review summarizes recent advances in small-molecule fluorescent photoswitches based on classic photochromic molecules diverse states, and provides some existing problems challenges to promote follow-up development this field.

Language: Английский

Citations

32
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

13
Smart molecular crystal switches DOI Creative Commons
Ian Cheng‐Yi Hou, Liang Li, Hongyu Zhang

et al.

Smart Molecules, Journal Year: 2024, Volume and Issue: 2(1)

Published: Feb. 16, 2024

Abstract The multifaceted switches are part of our everyday life from the macroscopic to molecular world. A switch operating in solution and crystalline state is very different. In this review, we summarize state‐of‐the‐art smart crystal based on martensites. These respond external stimuli reversibly change between states, retaining their integrity. operation predominantly relies temperature alterations or mechanical stress, with emerging methods photothermal effects, photoisomerization, host‐guest chemistry. capability changing orientation interaction offers opportunities several applications, including actuators, shaping structural materials, optoelectronic magnetic as well switchable porous materials. Smart have vast potential modern scientific technological progress. ongoing research shapes a rich landscape for innovation future exploration across diverse disciplines.

Language: Английский

Citations

11