ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(4), P. 5149 - 5157
Published: Jan. 22, 2024
Water/light regulated room-temperature phosphorescence (RTP) of polypseudorotaxane supramolecular gel is constructed by threading the poly(ethylene glycol)-
Language: Английский
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(32)
Published: June 7, 2024
Abstract Photochromic molecules have remarkable potential in memory and optical devices, as well driving manipulating molecular motors or actuators many other systems using light. When photochromic are introduced into carbon nanomaterials (CNMs), the resulting hybrids provide unique advantages create new functions that can be employed specific applications devices. This review highlights recent developments diverse CNMs. CNMs also introduced. The fundamentals of different discussed, including design principles types interactions between via covalent non‐covalent bonding such π−π stacking, amphiphilic, electrostatic, hydrogen bonding. Then properties CNMs, e.g., photopatterning, fluorescence modulation, actuation, photoinduced surface‐relief gratings, their energy storage (solar thermal fuels, photothermal batteries, supercapacitors), nanoelectronics (transistors, junctions, photo‐switchable conductance, electron transfer), sensors, bioimaging highlighted. Finally, an outlook on challenges opportunities future is presented. discusses a vibrant interdisciplinary research field expected to stimulate further nanoscience, advanced nanotechnology, intelligently responsive materials,
Language: Английский
Citations
19
Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(44)
Published: Sept. 12, 2022
Herein, we reported solid supramolecular bromonaphthylpyridinium polymers (P-BrNp), which exhibit tunable phosphorescence emission in the amorphous state enabled by sulfobutylether-β-cyclodextrin (SBE-β-CD) and diarylethene derivatives. The monomer BrNp gave single fluorescence at 490 nm, while an apparent room-temperature (RTP) 550 nm emerged for P-BrNp copolymers with various feed ratios. Through fluorescence-phosphorescence dual emission, P-BrNp-0.1 displayed ultrahigh white-light quantum yield of 83.9 %. Moreover, subsequent assembly SBE-β-CD further enhanced phosphorescent from 64.1 % to 71.3 %, accompanied conversion photoluminescence white yellow. Diarylethene monomers were introduced as photoswitches realize reversible RTP can be used switchable data encryption multifunctional writing ink.
Language: Английский
Citations
42
ACS Nano, Journal Year: 2023, Volume and Issue: 17(14), P. 12971 - 12999
Published: July 11, 2023
Swarms, which stem from collective behaviors among individual elements, are commonly seen in nature. Since two decades ago, scientists have been attempting to understand the principles of natural swarms and leverage them for creating artificial swarms. To date, underlying physics; techniques actuation, navigation, control; field-generation systems; a research community now place. This Review reviews fundamental applications micro/nanorobotic The generation mechanisms emergent micro/nanoagents identified over past elucidated. advantages drawbacks different techniques, existing control systems, major challenges, potential prospects discussed.
Language: Английский
Citations
42
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(15)
Published: Feb. 14, 2023
Photoswitchable materials have attracted considerable attention in various fields. Developing excellent solid-state dual-mode photoswitches is an important but challenging task. Herein, we propose a new strategy to construct excited-state intramolecular proton transfer (ESIPT) inspired photoswitch (DiAH-pht) that possesses aggregation-induced emission (AIE) features and displays fast molecular isomerization process characterized by behavior the solid state. Mechanistic studies indicate introduction of bulky group can create folded conformation provides adequate volume facilitate photoisomerization enhanced ESIPT effect boost process. The feasibility our was further demonstrated activated performance Schiff base derivatives. Furthermore, DiAH-pht shows good fields information encryption high-density data storage.
Language: Английский
Citations
35
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(24)
Published: March 6, 2023
Abstract Nonequilibrium oscillation fueled by dissipating chemical energy is ubiquitous in living systems for realizing a broad range of complex functions. The design synthetic materials that can mimic their biological counterparts the production dissipative structures and autonomous oscillations great interest but remains challenging. Here, series environmentally adaptable hydrogels functionalized with photoswitchable spiropyran derivatives display tunable equilibrium‐shifting capability, thus endowing those high degree freedom flexibility reported. Such nonequilibrium are able to responsively adapt shapes under constant light illumination due asymmetric deswelling, which turn generates self‐shadowing consequently creates self‐oscillating behaviors through negative feedback process. Diverse modes including bending, twisting, snap‐through buckling frequency amplitude widely observed three different molecular systems. Density functional theory calculations finite element simulations further demonstrated robustness such photoadaptable self‐oscillation mechanism. This study provides useful strategy construction highly potential applications self‐sustained soft robots devices.
Language: Английский
Citations
32
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: June 26, 2024
Abstract Photocontrollable luminescent molecular switches capable of changing emitting color have been regarded as the ideal integration between intelligent and materials. A remaining challenge is to combine good luminescence properties with wide range wavelength transformation, especially when confined in a single system that forms well-defined nanostructures. Here, we report π-expanded photochromic photoswitch, which allows for comprehensive achievements including emission variation (240 nm wide, 400–640 nm), high photoisomerization extent (95%), pure (<100 full width at half maximum). We take advantageous mechanism modulating self-assembly intramolecular charge transfer synthesis construction, further realize by simple photocontrol. Based on this, both photoactivated anti-counterfeiting function self-erasing photowriting films are achieved fluorescence. This work will provide insight into design optical
Language: Английский
Citations
14
Advanced Science, Journal Year: 2024, Volume and Issue: 11(29)
Published: May 29, 2024
Abstract Electronic switches have been considered to be one of the most important components contemporary electronic circuits for processing and storing digital information. Fabricating functional devices with building blocks atomic/molecular can greatly promote minimization meet requirement high integration. This review highlights key developments in fabrication application molecular switching devices. overview offers valuable insights into mechanisms under various stimuli, emphasizing structural energy state changes core molecules. Beyond switches, typical individual metal atomic are further introduced. A critical discussion main challenges realizing developing practical molecular/atomic is provided. These analyses summaries will contribute a comprehensive understanding switch mechanisms, providing guidance rational design nanoswitch toward applications.
Language: Английский
Citations
13
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 739 - 749
Published: Aug. 5, 2024
Language: Английский
Citations
9
Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(46), P. 21244 - 21254
Published: Nov. 15, 2022
Molecular confinement effects can profoundly alter the physicochemical properties of confined species. A plethora organic molecules were encapsulated within cavities supramolecular hosts, and impact cavity size polarity was widely investigated. However, extent to which guests be affected by symmetry cage─which dictates shape cavity─remains understood. Here we show that cage has a dramatic effect on equilibrium between two isomers spiropyran guests. Working with Pd-based coordination cages featuring similarly sized but differently shaped hydrophobic cavities, found highly selective stabilization isomer whose matches cage. Td-symmetric stabilized spiropyrans' colorless form rendered them photochemically inert. In contrast, D2h-symmetric favored colored isomer, while maintaining reversible photoswitching states spiropyrans. We also switching kinetics strongly depend substitution pattern scaffold. This finding used fabricate time-sensitive information storage medium tunable lifetimes encoded messages.
Language: Английский
Citations
36
Journal of Functional Biomaterials, Journal Year: 2022, Volume and Issue: 14(1), P. 12 - 12
Published: Dec. 23, 2022
With the development of nanotechnology, various types polymer-based drug delivery systems have been designed for biomedical applications. Polymer-based with desirable biocompatibility can be efficiently delivered to tumor sites passive or targeted effects and combined other therapeutic imaging agents cancer theranostics. As an effective vehicle gene delivery, polyethyleneimine (PEI) has extensively studied due its rich surface amines excellent water solubility. In this work, we summarize modifications PEI enhance functionalization. Additionally, synthesis PEI-based nanoparticles is discussed. We further review applications in treatment, imaging, Finally, thoroughly consider outlook challenges relating systems.
Language: Английский
Citations
31