Polymerization-Induced Crystallization of Dopant Molecules: An Efficient Strategy for Room-Temperature Phosphorescence of Hydrogels

Article Multidisciplinary Sciences

Patterned crystal growth and heat wave generation in hydrogels

Thomas B. H. Schroeder et al.

Summary: The authors demonstrate area-selective activation of thermoresponsive processes by exothermic crystallization of sodium acetate into trihydrate crystals within a patterned polyacrylamide hydrogel.

NATURE COMMUNICATIONS (2022)

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Review Chemistry, Multidisciplinary

Programmable Morphing Hydrogels for Soft Actuators and Robots: From Structure Designs to Active Functions

Dejin Jiao et al.

Summary: Nature provides abundant inspiration and paradigms for the development of smart materials that can actuate, morph, and move on demand. Hydrogels, as intelligent materials with high similarity to soft biotissues and diverse responses to external stimuli, are an ideal candidate for constructing soft actuators and robots. This Account gives an overview of the principles and design of hydrogels for controllable deformations and motions, as well as their applications in various fields such as biomedicine and engineering. The field of morphing hydrogels has rapidly developed in recent years, showcasing active functions and versatile applications.

ACCOUNTS OF CHEMICAL RESEARCH (2022)

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Article Materials Science, Multidisciplinary

Exploration of Room-Temperature Phosphorescence and New Mechanism on Carbon Dots in a Polyacrylamide Platform and their Applications for Anti-Counterfeiting and Information Encryption

Hui-yong Wang et al.

Summary: This study reports the development of full-color afterglow composites composed of four multicolored carbon dots (CDs) in a polyacrylamide (PAM) matrix. The CDs@PAM composites exhibit adjustable four-color room-temperature phosphorescence (RTP). The abundant amide groups in PAM are connected to the functional groups in CDs through hydrogen bonds, which enhance the stability of the RTP and hinder the emission of phosphorescence. The composites show multi-color fluorescence as well as full-color RTP, making them promising for anti-counterfeiting and information encryption.

ADVANCED OPTICAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Aliphatic Polyesters with White-Light Clusteroluminescence

Bo Chu et al.

Summary: This paper reports the first example of linear nonconjugated polyesters with single-molecule white-light emission (SMWLE), achieved by adjusting the balance of structural flexibility and rigidity and altering the chemical structures of the monomer. Furthermore, the hierarchical structures of clusteroluminogens (CLgens) were manipulated to achieve pure SMWLE.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Molecularly Engineered Unparalleled Strength and Supertoughness of Poly(urea-urethane) with Shape Memory and Clusterization-Triggered Emission

Xiaoyue Wang et al.

Summary: Ultrastrong and supertough shape-memory poly(urea-urethane) material with excellent durability and fluorescence properties is fabricated through molecular engineering.

ADVANCED MATERIALS (2022)

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Article Polymer Science

Room-Temperature Phosphorescence in the Amorphous State Enhanced by Copolymerization and Host-Guest Complexation

Weijie Zhu et al.

Summary: This study presents a new strategy to enhance organic phosphorescence in the amorphous state through copolymerization and host-guest complexation. The random copolymer synthesized exhibited satisfactory phosphorescent behavior and the quantum yield and lifetime were further improved after complexation with K+. This work opens up new possibilities for the development of phosphorescent polymeric materials with advantages of simple preparation, processability, and controllability.

MACROMOLECULES (2022)

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Article Chemistry, Multidisciplinary

Frequency-Upconverted Stimulated Emission by Up to Six-Photon Excitation from Highly Extended Spiro-Fused Ladder-Type Oligo(p-phenylene)s

Yi Jiang et al.

Summary: This study presents the observation of frequency-upconverted fluorescence and stimulated emission induced by simultaneous six-photon excitation in an organic molecular system, showcasing the potential applications of high-order multiphoton absorption processes.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Engineering, Biomedical

Freeze-Thawing Chitosan/Ions Hydrogel Coated Gauzes Releasing Multiple Metal Ions on Demand for Improved Infected Wound Healing

Jian Xiao et al.

Summary: The imbalance of metal ions in the wound microenvironment is a key factor leading to delayed wound healing. A novel freeze-thawing strategy has been developed to incorporate chitosan/ions hydrogel into medical gauzes for on-demand release of multiple ions to accelerate wound healing. Both in vitro and in vivo studies show that the metal ions released from the gauzes can effectively kill bacteria, promote cell migration, accelerate granulation formation, collagen deposition, re-epithelization, angiogenesis, and inhibit inflammation, thus enhancing infected wound healing.

ADVANCED HEALTHCARE MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Supramolecular Pins with Ultralong Efficient Phosphorescence

Xin-Kun Ma et al.

Summary: A high quantum yield ultralong organic phosphorescent material was successfully constructed using purely organic supramolecular pins. This new design overcomes electrostatic repulsion and promotes intramolecular charge transfer, resulting in a significant improvement in phosphorescence quantum yield. The supramolecular pins also have potential applications in multicolor photoluminescence and targeted phosphorescence imaging of mitochondria.

ADVANCED MATERIALS (2021)

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Article Multidisciplinary Sciences

Engendering persistent organic room temperature phosphorescence by trace ingredient incorporation

Bingbing Ding et al.

Summary: This study isolated and characterized an impurity from a pure organic RTP system, which led to an unusual ultralong RTP in the matrix, and screened out a series of compounds to form a bicomponent RTP system using the trace ingredient incorporation method. The resulting RTP materials have high quantum yields, long lifetimes, and other advantages.

SCIENCE ADVANCES (2021)

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Review Chemistry, Multidisciplinary

Supramolecular Purely Organic Room-Temperature Phosphorescence

Xin-Kun Ma et al.

Summary: Organic room-temperature phosphorescence (RTP) has attracted attention in recent years, leading to the development of supramolecular phosphorescence. By utilizing the synergy between supramolecular co-assembly and strong binding by macrocyclic host compounds, deficiencies in RTP materials can be overcome, improving efficiency and expanding applications in aqueous solutions and cell imaging. This approach shows promising prospects in chemistry, biology, and material science.

ACCOUNTS OF CHEMICAL RESEARCH (2021)

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Article Chemistry, Multidisciplinary

Dual-Encryption in a Shape-Memory Hydrogel with Tunable Fluorescence and Reconfigurable Architecture

Chao Nan Zhu et al.

Summary: A tough hydrogel with reprogrammable shape memory and phototunable fluorescence has been developed, enabling the encoding of fluorescent patterns and deformation into specific 3D configurations through photolithography and origami/kirigami designs. This innovative hydrogel design offers improved security for information protection and display.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Light-Harvesting Supramolecular Phosphors: Highly Efficient Room Temperature Phosphorescence in Solution and Hydrogels

Swadhin Garain et al.

Summary: A high quantum yield solution state RTP has been achieved in water by employing an organic-inorganic supramolecular scaffolding strategy. Furthermore, the supramolecular hybrid phosphors have been used as a light-harvesting scaffold to achieve delayed fluorescence from acceptor dyes via efficient triplet to singlet Forster resonance energy transfer.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Large-Area, Flexible, Transparent, and Long-Lived Polymer-Based Phosphorescence Films

Yongfeng Zhang et al.

Summary: The research has successfully developed polymer-based room-temperature phosphorescence materials using a hydrogen-bonding and coassembly strategy, resulting in large-area, flexible, transparent, and long-lived RTP systems. By doping different organic chromophores into PVA films, long-lived phosphorescence emission and high luminance have been achieved, showcasing the potential for large-area, flexible, and transparent emitting materials.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Ultralong Organic Phosphorescent Foams with High Mechanical Strength

Suzhi Cai et al.

Summary: This study presented a series of ultralong phosphorescent foams with high mechanical strength, which have long phosphorescence lifetime and can withstand high pressure. The phosphorescence emission of the foam can be tuned from blue to orange by varying the excitation wavelength. Experimental data and theoretical calculations showed that ultralong phosphorescence was attributed to the fixation of multiple hydrogen bonds to the clusters of carbonyl groups.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Multidisciplinary Sciences

Generating circularly polarized luminescence from clusterization-triggered emission using solid phase molecular self-assembly

Peilong Liao et al.

Summary: The authors demonstrate CPL emission generated from CTE in a supramolecular film derived from solid phase molecular self-assembly. CPL is achieved through the distribution of charges in PLL and OL, leading to an environmentally friendly and economic CPL achieved through FRET process.

NATURE COMMUNICATIONS (2021)

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Review Chemistry, Multidisciplinary

Nonconventional luminophores: characteristics, advancements and perspectives

Saixing Tang et al.

Summary: Nonconventional luminophores, lacking extended conjugates, have unique luminescence properties and applications in various fields. These unconventional luminophores possess nonconjugated structures and exhibit intriguing luminescence behaviors.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Physical

A phase-change gel based pressure sensor with tunable sensitivity for artificial tactile feedback systems

Houch Jing et al.

Summary: A novel phase-change-gel-based pressure sensor was designed with tunable sensitivity and sensing ranges by adjusting the Young's modulus of the gel through a phase change. The sensor was integrated into a robotic gripper to enable artificial tactile feedback system and autonomous grasping force adjustment for various objects with different stiffness. This work provides a new strategy for functional pressure sensors and advances intelligent robotic technologies.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Review Chemistry, Multidisciplinary

Recent advances in persistent luminescence based on molecular hybrid materials

Rui Gao et al.

Summary: This review systematically summarizes recent advances in molecular persistently luminescent materials, with a specific focus on materials composed of molecular hybrids. By controlling chemical interactions and molecular orientations, these hybrid materials offer new methods to improve luminescence lifetimes and efficiencies.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Multidisciplinary

Phase change mediated mechanically transformative dynamic gel for intelligent control of versatile devices

Xing Zhao et al.

Summary: This dynamic gel material can undergo an exceptional stiffness transition from a soft gel state to a rigid solid state in response to a thermal stimulus, with a dramatic stiffness change of 10^5 times (601 MPa vs 4.5 kPa). The reversibility of the phase and mechanical transition upon thermal stimuli enables potential applications in adhesive thermal interface gaskets, high-temperature warning sensors, and intelligent grippers.

MATERIALS HORIZONS (2021)

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Article Materials Science, Multidisciplinary

Boosting the humidity resistance of nonconventional luminogens with room temperature phosphorescence via enhancing the strength of hydrogen bonds

Yide Meng et al.

Summary: Organic room temperature phosphorescence (RTP) has garnered significant attention for its potential applications, and hydrogen bond engineering has proven to be an effective strategy in constructing luminescent materials. However, research on moisture-resistant properties lags behind, even though it plays a crucial role in preventing humidity-induced quenching of RTP emission.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

Microscopic local stiffening in a supramolecular hydrogel network expedites stem cell mechanosensing in 3D and bone regeneration

Weihao Yuan et al.

Summary: Chemical incorporation of acryloyl nanoparticle-based cross-linkers can create regionally stiff network structures in dynamic hydrogels, enhancing cell spreading and mechanotransduction. This method can improve cell differentiation and promote in situ regeneration of bone defects in animal models.

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Recent advances in oligomers/polymers with unconventional chromophores

Nan Jiang et al.

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Polymerization-Induced Crystallization of Dopant Molecules: An Efficient Strategy for Room-Temperature Phosphorescence of Hydrogels

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