Functional Supramolecular Polymeric Networks: The Marriage of Covalent Polymers and Macrocycle-Based Host–Guest Interactions

Chemical Reviews, Год журнала: 2020, Номер 120(13), С. 6070 - 6123

Опубликована: Май 19, 2020

Covalent polymers connected by non-covalent interactions constitute a fascinating set of materials known as supramolecular polymer networks (SPNs). A key feature SPNs is that the underlying covalent endow resulting self-assembled with features, such structural and mechanical integrity, good processability, recyclability, stimuli-responsiveness, self-healing, shape memory, are not recapitulated in case classic systems. The unique nature derives from controlled marriage traditional macrocycle-based host-guest interactions. As consequence, polymeric have played important roles number diverse fields, including science, chemistry, biomedical materials, information storage technology. In this Review, we summarize advances made area functional SPNs, focus on original literature reports appearing past five years. treatment organized according to used produce various SPNs. role backbones also discussed.

Язык: Английский

---

Supramolecular cancer nanotheranostics

Chemical Society Reviews, Год журнала: 2021, Номер 50(4), С. 2839 - 2891

Опубликована: Янв. 1, 2021

Supramolecular cancer nanotheranostics have shown promising potentials in early-stage diagnosis and personal therapy. Herein, we summarize the progress of supramolecular provide guidance for designing new targeted theranostic agents.

Язык: Английский

---

Stimuli‐Responsive AIEgens

Advanced Materials, Год журнала: 2021, Номер 33(32)

Опубликована: Июнь 17, 2021

Abstract The unique advantages and the exciting application prospects of AIEgens have triggered booming developments in this area recent years. Among them, stimuli‐responsive received particular attention impressive progress, they been demonstrated to show tremendous potential many fields from physical chemistry materials science biology medicine. Here, achievements terms seven most representative types stimuli including force, light, polarity, temperature, electricity, ion, pH, are summarized. Based on typical examples, it is illustrated how each type systems realize desired performance for various applications. key work principles behind them ultimately deciphered figured out offer new insights guidelines design engineering next‐generation luminescent more broad

Язык: Английский

---

Supramolecular Purely Organic Room-Temperature Phosphorescence

Accounts of Chemical Research, Год журнала: 2021, Номер 54(17), С. 3403 - 3414

Опубликована: Авг. 17, 2021

ConspectusIn recent years, purely organic room-temperature phosphorescence (RTP) has aroused wide concern and promotes the development of supramolecular phosphorescence. Different from crystallization, polymerization, or matrix rigidification, strategy mainly takes advantage synergy between co-assembly strong binding by macrocyclic host compounds (cucurbit[n]urils, cyclodextrins, etc.) to overcome deficiencies such as poor processability water solubility improves RTP materials' quantum efficiency lifetime in solid state an aqueous solution. Meanwhile, it expands application, especially solution, cell imaging. Therefore, will become a new growth point have broad application prospects chemistry, biology, material science.This Account focuses on uniquely synergetic advantages host–guest interaction hosts for enhancing RTP. This starts with brief introduction materials well co-assembly. Then, we introduce solid-state involving ultrahigh phosphorescent yield via tight encapsulation cucurbit[6]uril, ultralong changing substituents phosphors, long-lived bright polymerization. applications anti-counterfeiting data encryption are presented. The third part be water-phase systems constructed water-soluble cucurbit[8]uril. Host–guest polymerization worked together toward efficient multi-stage assembly promoted targeted imaging energy transfer. A humidity sensor conversion hydrogels xerogels also involved. In summary section, present perspectives possible research directions phosphorescence.Furthermore, basis previous research, would like conclude propose developing concept "macrocycles enhance guest's phosphorescence", this not only means that limits movement guest compound interactions but involves enhancement centered which further RTP, solubility, biocompatibility. And believe able, theory "assembly-induced emission" "aggregation-induced emission", accelerate materials.

Язык: Английский

---

Color-tunable single-fluorophore supramolecular system with assembly-encoded emission

Nature Communications, Год журнала: 2020, Номер 11(1)

Опубликована: Янв. 9, 2020

Abstract Regulating the fluorescent properties of organic small molecules in a controlled and dynamic manner has been fundamental research goal. Although several strategies have exploited, realizing multi-color molecular emission from single fluorophore remains challenging. Herein, we demonstrate an emissive system by combining pyrene acylhydrazone units, which can generate switchable emissions at different assembled states. Two kinds supramolecular tools, amphiphilic self-assembly γ-cyclodextrin mediated host-guest recognition, are used to manipulate intermolecular aromatic stacking distances, resulting tunable ranging blue yellow, including pure white-light emission. Moreover, external chemical signal, amylase, is introduced control assembly states on time scale, generating distinct system. The this be also enabled hydrogel network, exhibiting promising potential for intelligent materials.

Язык: Английский

---

Conductive Hydrogel‐Based Electrodes and Electrolytes for Stretchable and Self‐Healable Supercapacitors

Advanced Functional Materials, Год журнала: 2021, Номер 31(24)

Опубликована: Апрель 9, 2021

Abstract Stretchable self‐healing supercapacitors (SCs) can operate under extreme deformation and restore their initial properties after damage with considerably improved durability reliability, expanding opportunities in numerous applications, including smart wearable electronics, bioinspired devices, human–machine interactions, etc. It is challenging, however, to achieve mechanical stretchability self‐healability energy storage technologies, wherein the key issue lies exploitation of ideal electrode electrolyte materials exceptional ability besides conductivity. Conductive hydrogels (CHs) possess unique hierarchical porous structure, high electrical/ionic conductivity, broadly tunable physical chemical through molecular design structure regulation, holding tremendous promise for stretchable SCs. Hence, this review innovatively constructed a focus on CH based electrodes electrolytes First, common synthetic approaches CHs are introduced; then stretching strategies involved systematically elaborated; followed by an explanation conductive mechanism CHs; focusing CH‐based SCs; subsequently, application SCs electronics discussed; finally, conclusion drawn along views challenges future research directions regarding field

Язык: Английский

---

Wide range zero-thermal-quenching ultralong phosphorescence from zero-dimensional metal halide hybrids

Nature Communications, Год журнала: 2020, Номер 11(1)

Опубликована: Сен. 16, 2020

Abstract Materials with ultralong phosphorescence have wide-ranging application prospects in biological imaging, light-emitting devices, and anti-counterfeiting. Usually, molecular is significantly quenched increasing temperature, rendering it difficult to achieve high-efficiency room temperature phosphorescence. Herein, we spearhead this challenging effort design thermal-quenching resistant phosphorescent materials based on an effective intermediate energy buffer transfer route. Co-crystallized assembly of zero-dimensional metal halide organic-inorganic hybrids enables (Ph 4 P) 2 Cd Br 6 that maintains luminescent stability across a wide range from 100 320 K (ΔT = 220 °C) the quantum yield 62.79% lifetime 37.85 ms, which exceeds those other state-of-the-art systems. Therefore, work not only describes for thermal-quenching-resistant high efficiency, but also demonstrates way obtain intelligent systems long-lasting optical storage logic compilation applications.

Язык: Английский

---

Material properties and applications of mechanically interlocked polymers

Nature Reviews Materials, Год журнала: 2021, Номер 6(6), С. 508 - 530

Опубликована: Фев. 12, 2021

Язык: Английский

---

Light: A Magical Tool for Controlled Drug Delivery

Advanced Functional Materials, Год журнала: 2020, Номер 30(49)

Опубликована: Сен. 9, 2020

Light is a particularly appealing tool for on-demand drug delivery due to its noninvasive nature, ease of application and exquisite temporal spatial control. Great progress has been achieved in the development novel light-driven strategies with both breadth depth. Light-controlled platforms can be generally categorized into three groups: photochemical, photothermal, photoisomerization-mediated therapies. Various advanced materials, such as metal nanoparticles, sulfides oxides, metal-organic frameworks, carbon nanomaterials, upconversion semiconductor stimuli-responsive micelles, polymer- liposome-based nanoparticles have applied light-stimulated delivery. In view increasing interest targeted delivery, we review light-responsive systems focus on recent advances, key limitations, future directions.

Язык: Английский

---

Recent advances in polysaccharide‐based hydrogels for synthesis and applications

Aggregate, Год журнала: 2021, Номер 2(2)

Опубликована: Янв. 19, 2021

Abstract Hydrogels are three‐dimensional (3D) crosslinked hydrophilic polymer networks that have garnered tremendous interests in many fields, including water treatment, energy storage, and regenerative medicine. However, conventional synthetic hydrogels poor biocompatibility. In this context, polysaccharides, a class of renewable natural materials with biocompatible biodegradable properties, been utilized as building blocks to yield polysaccharide‐based through physical and/or chemical crosslinking polysaccharides via variety monomers or ions. These polysaccharide‐derived exhibit peculiar physicochemical properties excellent mechanical due their unique structures abundant functional groups. This review focuses on recent advances synthesis applications by capitalizing set (i.e., cellulose, alginate, chitosan, cyclodextrins [CDs]). First, we introduce the design principles for crafting hydrogels. Second, interconnected various strategies (e.g., crosslinking, double networking) summarized. particular, introduction noncovalent dynamic covalent interactions imparts myriad intriguing performances stimuli–response self‐recovery). Third, diverse self‐healing, sensory, supercapacitor, battery, drug delivery, wound healing, tissues engineering, bioimaging fields discussed. Finally, perspectives promote future enable new functions outlined.

Язык: Английский

---