Transient and elusive intermediate states in self‐assembly processes: An overview DOI Creative Commons
Ziyi Zhang,

Ze Bo Hu,

Junfei Xing

et al.

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

Published: May 1, 2024

Abstract The transient and elusive intermediate states are the keys in self‐assembly processes, which common phenomena shaping structure, properties, functionalities of assembled materials across many scientific domains. However, understanding about process is always challenging limited. In this review, we focus on these by combining theoretical experimental approaches. By examining a wide variety systems that span from biological to metal–organic nanostructures, review uncovers wealth self‐assembled materials. addition current knowledge, it will identify challenges provide new insight into opportunities for future research.

Language: Английский

A Photo‐ and Thermo‐Driven Azoarene‐Based Circularly Polarized Luminescence Molecular Switch in a Liquid Crystal Host DOI Open Access
W.P. Kang, Yuqi Tang, Xianyu Meng

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(48)

Published: Aug. 31, 2023

The development of chiral optical active materials with switchable circularly polarized luminescence (CPL) signals remains a challenge. Here an azoarene-based molecular switch, (S, R, S)-switch 1 and (R, R)-switch 2, are designed prepared (R)-binaphthyl azo group as photosensitive moiety two (S)- or fluorescent molecules opposite the same handedness moieties. Both switches exhibit reversible trans/cis isomerization when irradiated by 365 nm UV light 520 green in solvent liquid crystal (LC) media. In contrast control switch is doped into nematic LCs, polarization inversion switching-off CPL achieved resultant helical superstructure upon irradiation light, respectively. Meanwhile, fluorescence intensity system basically unchanged during this switching process. particular, these variations could be recovered after heating, realizing true sense switching. Taking advantage unique switching, proof-of-concept for "a dual-optical information encryption system" based on above material demonstrated.

Language: Английский

Citations

70

Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence with A High Dissymmetry Factor in Chiral Helical Superstructures DOI
Jiao Liu,

Zhen‐Peng Song,

Juan Wei

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(7)

Published: Aug. 26, 2023

Abstract Long‐lived room‐temperature phosphorescence (RTP) of organic materials holds a significant potential for optical information. Circularly polarized ultralong (CP‐OURTP) with extremely high dissymmetry factor ( g lum ) values is even highly demanded and considerably challenging. Here, an effective strategy introduced to realize CP‐OURTP emission decay time 735 ms value up 1.49, which exceeds two orders magnitude larger than previous records, through system composed RTP polymers chiral helical superstructures. The exhibits excellent stability under multiple cycles photoirradiation thermal treatment, further employed information encryption based on multiplexing. results are anticipated lay the foundation development in advanced photonic applications.

Language: Английский

Citations

55

When quantum dots meet blue phase liquid crystal elastomers: visualized full-color and mechanically-switchable circularly polarized luminescence DOI Creative Commons
Shan Li, Yuqi Tang,

Qingyan Fan

et al.

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: June 14, 2024

Abstract Polymer-based circularly polarized luminescence (CPL) materials with the advantage of diversified structure, easy fabrication, high thermal stability, and tunable properties have garnered considerable attention. However, adequate precise tuning over CPL in polymer-based remains challenging due to difficulty regulating chiral structures. Herein, visualized full-color is achieved by doping red, green, blue quantum dots (QDs) into reconfigurable phase liquid crystal elastomers (BPLCEs). In contrast signal observed cholesteric (CLCEs), 3D cubic superstructure BPLCEs induces an opposite signal. Notably, this effect entirely independent photonic bandgaps (PBGs) results a g lum value, even without matching between PBGs emission bands QDs. Meanwhile, lattice structure can be reversibly switched via mechanical stretching force, inducing on-off switching signals, these variations further fixed using dynamic disulfide bonds BPLCEs. Moreover, smart systems for anti-counterfeiting information encryption been demonstrated, suggesting great potential BPLCEs-based active materials.

Language: Английский

Citations

35

Multiple degrees‐of‐freedom programmable soft‐matter‐photonics: Configuration, manipulation, and advanced applications DOI

Yuxian Zhang,

Zhigang Zheng, Quan Li

et al.

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

Published: Feb. 1, 2024

Abstract For centuries, humans have never stopped exploring the nature of light and manipulating it, since carries multiple information through its intrinsic wave‐particle dualism, including wavelength, amplitude, phase, polarization, spin/orbital angular momentum, etc., which determines physical language basic manners we perceive objective world. Conventional optical devices, such as lenses, prisms, lasers, are composed solid elements that bulky, making it difficult to manipulate dynamically with degrees‐of‐freedom. Comparatively, some responsive soft matters, especially represented by liquid crystals (LCs), possess distinctive orientational order spontaneous self‐assembled superstructures, enabling digital programming microstructures degrees‐of‐freedom manipulation their characteristics. The based on these is, “soft‐matter‐photonics”, is playing an impressive role in integrated functional present age explosion. Herein, review latest advances, respectively, microstructure configurations, manipulations, relevant prospective applications. Additionally, scientific issues technical challenges hinder programing operation manipulations discussed. Toward a four‐dimensional condensed matter, this may wide implications variety applications, fabrication compact elements, multi‐channel processing high‐capacity communications.

Language: Английский

Citations

32

Dynamically Modulating the Dissymmetry Factor of Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence from Soft Helical Superstructures DOI
Jiao Liu,

Junjie Wu,

Juan Wei

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(12)

Published: Jan. 24, 2024

Abstract Achieving circularly polarized organic ultralong room‐temperature phosphorescence (CP‐OURTP) with a high luminescent dissymmetry factor (g lum ) is crucial for diverse optoelectronic applications. In particular, dynamically controlling the of CP‐OURTP can profoundly advance these applications, but it still unprecedented. This study introduces an effective strategy to achieve photoirradiation‐driven chirality regulation in bilayered structure film, which consists layer soft helical superstructure incorporated light‐driven molecular motor and phosphorescent (RTP) polymer. The prepared film exhibits emission lifetime 805 ms g value up 1.38. Remarkably, resulting be reversibly controlled between 0.6 1.38 over 20 cycles by light irradiation, representing first example CP‐OURTP.

Language: Английский

Citations

30

Adaptive liquid crystal polymers based on dynamic bonds: From fundamentals to functionalities DOI Creative Commons
Ruochen Lan, Xiang‐Guo Hu, Jingyu Chen

et al.

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

Published: Feb. 1, 2024

Abstract Liquid crystal polymers (LCPs) have gained tremendous attention in recent years due to their great potentials from fabrication of responsive actuators and sensors construction intelligent soft robotic light modulators. However, conventional LCPs with permanent cross‐links present tedious unmodifiable stimuli‐responsiveness. Recently, dynamic bonds capable reversibly break reform been integrated into LCP, imparting intrinsic characteristics. The LCP possesses unprecedented diverse functionalities including reprogrammability, recyclability, self‐healing ability, becoming much more adaptive surrounding environmental changes compared the counterpart. In this review, progress bond‐based is summarized. mechanism, preparation, based on noncovalent bond (DNCB) covalent (DCB) are poised be discussed, followed by introducing emergent combining both DNCB DCB. Consequently, unique will given. Finally, outlooks development presented.

Language: Английский

Citations

28

Light‐Driven Sign Inversion of Circularly Polarized Luminescence Enabled by Dichroism Modulation in Cholesteric Liquid Crystals DOI
Yang Li, Yihan Chen, Jiaxin Luo

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 12, 2024

Stimuli-responsive circularly polarized luminescence (CPL) materials show great promise in applying information encryption and anticounterfeiting. Herein, light-driven CPL sign inversion is achieved by combining a photoresponsive achiral negative dichroic dye (KG) static positive (NR) as dopants at the 0.5:0.5 weight ratio into cholesteric liquid crystal (CLC) host. The side chains of KG undergo trans/cis isomerization after 365 nm UV light irradiation, leading to dichroism (S

Language: Английский

Citations

26

Structural color‐based physical unclonable function DOI Creative Commons
Xiaofeng Lin,

Daxiang Shi,

Guobin Yi

et al.

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

Published: Feb. 1, 2024

Abstract Commodity fraud poses significant economic and public health risks while jeopardizing market stability. A promising avenue for addressing this issue involves the incorporation of physical unclonable function (PUF) in anti‐counterfeiting labels commodity authentication purposes. PUFs are a large number unbreakable security generated through random process, which exhibit unique pattern responses that impervious to replication. In particular, novel kind PUF model, called structural color‐based PUFs, combing color characteristics angle‐dependent stability brightness with property, offers unassailable encryption capabilities serves as formidable safeguard against forgery. This review undertakes comprehensive summary recent advancements technology leveraging materials. Moreover, it provides systematic description recognition employed optical PUFs. Finally, prospective outlook is proposed explain existing challenges, highlight potential developments incorporating labels.

Language: Английский

Citations

24

Smart chiral liquid crystal elastomers: Design, properties and application DOI Creative Commons
Yuan Liu,

Jiazhe Ma,

Jiajia Yang

et al.

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

Published: Feb. 29, 2024

Abstract Smart chiral liquid crystal elastomers are a class of soft photonic crystals with periodic nanostructures. There two kinds structural colors: cholesteric one‐dimensional helical nanostructure and blue‐phase three‐dimensional nanostructure. The self‐assembled can be dynamically controlled under external stimulation, the reflected color adjusted throughout visible light range. Along development innovative material systems cutting‐edge manufacturing technologies, researchers have proposed diverse strategies to design synthesize thoroughly investigated their properties potential applications. Here, we provide systematic review progress in fabrication smart elastomers, focusing on via surface‐enforced alignment, bar coating, 3D printing, anisotropic deswelling methods as well self‐assembly without additional alignment. able respond quickly stimuli wide range applications areas such adaptive optics, color‐changing camouflage, robotics, information encryption. This concludes perspective opportunities challenges for future elastomers.

Language: Английский

Citations

20

Pushing Trap‐Controlled Persistent Luminescence Materials toward Multi‐Responsive Smart Platforms: Recent Advances, Mechanism, and Frontier Applications DOI
Jiaren Du, Xiaomeng Wang, Shan Sun

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: July 14, 2024

Abstract Smart stimuli‐responsive persistent luminescence materials, combining the various advantages and frontier applications prospects, have gained booming progress in recent years. The trap‐controlled property energy storage capability to respond external multi‐stimulations through diverse pathways make them attractive emerging multi‐responsive smart platforms. This review aims at advances materials for advanced multi‐stimuli‐responsive design principles, mechanisms, representative stimulations, i.e., thermo‐, photo‐, mechano‐, X‐rays responsiveness, are comprehensively summarized. Various hybrid systems containing highlighted. Specifically, temperature dependent trapping de‐trapping performance is discussed, from extreme‐low ultra‐high conditions. Emerging future perspectives briefly presented. It hoped that this would provide new insights guidelines rational manipulation of

Language: Английский

Citations

20