Flexible hydrogen-bonded organic frameworks (HOFs): opportunities and challenges

Chemical Science, Journal Year: 2024, Volume and Issue: 15(26), P. 9874 - 9892

Published: Jan. 1, 2024

In this perspective, we have discussed the recent progress of flexible HOFs, with particular focus on various dynamic behaviors and their applications in different fields. Finally, current challenges opportunities field are discussed.

Language: Английский

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Ultralong Blue Organic Room‐Temperature Phosphorescence Promoted by Green Assembly

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(46)

Published: July 9, 2024

Abstract In recent years, there is a growing interest in developing ultralong organic room‐temperature phosphorescence (ORTP) with lifetimes the range of seconds. As one important three primary colors, blue ORTP an indispensable core component RTP regulation and application, however, large Stokes shift characteristics pose certain challenges ORTP. Here, new family phosphors are synthesized realized through crystal assembly water phase. Remarkably, compared to materials obtained phases, enabled long‐lived up 2.3 s quantum yield reached as high 29.27%. addition efficient green form, such dark possessed thermal stability flexible tunability. Moreover, superiority selected components demonstrated by comparing them polymer proposed show great potential programmable information encryption/anti‐counterfeiting.

Language: Английский

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Achieving Near‐Infrared Phosphorescence Supramolecular Hydrogel Based on Amphiphilic Bromonaphthalimide Pyridinium Hierarchical Assembly

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 26, 2024

Abstract Phosphorescent supramolecular hydrogels are currently a prevalent topic for their great promise in various photonic applications. Herein, an efficient near‐infrared (NIR) phosphorescence hydrogel is reported via the hierarchical assembly strategy aqueous solution, which fabricated from amphiphilic bromonaphthalimide pyridinium derivative (G), exfoliated Laponite (LP) nanosheets, and polymeric polyacrylamide (PAAm). Initially, G spontaneously self‐aggregates into spherical nanoparticles covered with positively charged units emits single fluorescence at 410 nm. Driven by electrostatic interactions negatively subsequently function as cross‐linked binders coassemble LP engendered red room‐temperature (RTP) up to 620 Benefiting hydrogen‐bonding interactions‐mediated physical cross‐linkage, further introduction of PAAm not only significantly elevates mechanical strength showing fast self‐healing capability, but also increases lifetime 2.49 4.20 ms, especially generating even higher temperature ( τ 363 K = 2.46 ms). Additionally, RTP energy transfer occurs after doping small amount organic dye heptamethine cyanine (IR780) acceptor hydrogels, resulting long‐lived NIR emission 823 nm high donor/acceptor ratio, successfully applied cell labeling window.

Language: Английский

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Cycloolefin Copolymers With a Multiply Rigid Structure for Protecting Triplet Exciton From Thermo‐ and Moisture‐Quenching

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

Published: Jan. 26, 2025

Abstract Polymeric room temperature phosphorescence (RTP) materials have been well developed and utilized in various fields. However, their fast thermo‐ moisture‐quenching behavior highly limit applications certain harsh environments. Therefore, the preparation of with moisture‐resistant is greatly attractive. Compared common water‐soluble polymers, cycloolefin copolymers (COC) show outstanding hydrophobicity higher rigidity, even at elevated temperatures, being as a promising candidate to prepare suppressed behavior. Herein, type COC bearing hydroxyl, ester, adamantanyl side groups synthesized. After dispersing phosphors into this matrix, resultant composites exhibit full‐color RTP lifetimes 249–590 ms. Their luminescence does not obvious quenching water, acid, alkalinous, reductive, oxidative In presence both rigid matrix phosphors, corresponding composite displays high‐temperature performance. Even 378 K, can emit lifetime 40–98 The these COC‐based for imaging, information encryption, anti‐counterfeiting are thus explored.

Language: Английский

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Coronene Doped Rubber-Toughened Plastics: Easily Photoactivatable, Visible Light Excitable, Stress-Whitening Quenching and Thermally Recoverable Ultralong Phosphorescence

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 876 - 883

Published: Feb. 6, 2025

Language: Английский

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Activating Electronic Delocalization: Through-Space Lone-Pair Interactions versus Hydrogen Bonding

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(9), P. 3941 - 3950

Published: July 26, 2024

It is still unclear how weak interactions specifically affect electronic structures. Here, we systematically reduce the number of N–H bonds within diarylmethane (DAM), precisely diminishing hydrogen (H-bonds). Contrary to widely reported result that H-bonds could enhance molecular brightness by promoting electron delocalization, DAMs lacking exhibit superior luminescence, compared with in both dilute solutions and solid states. indicated tend induce n-electron localization, preventing formation through-space lone-pair conjugation (n–n TSC). In addition, unlike studied π–π only existed aggregate state, n–n TSC can even stabilize conformation expressed solutions. Herein, not achieve bright white-light emissions nonconjugated small molecules but also reveal surprisingly competitive relationship between providing a new strategy for designing excellent optoelectronic materials via bridge.

Language: Английский

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Room temperature phosphorescent wood hydrogel

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Dec. 4, 2024

Room temperature phosphorescent (RTP) hydrogels exhibit great potential but show poor mechanical performance (Tensile strengthen <1 MPa) and non-tunable RTP performance, hindering their practical applications. Here, we develop wood hydrogel (W-hydrogel) by the in situ polymerization of acrylamide presence delignified wood. As a result molecular interactions between components polyacrylamide, W-hydrogel tensile 38.4 MPa green emission with lifetime 32.5 ms. Moreover, strength are increased to 153.8 69.7 ms, upon treating ethanol. Significantly, is switched alternating "ethanol water" treatments. Additionally, used as energy donor order produce red afterglow using RhB via an transfer process. Taking advantage these properties, processed into multiple hydrogel-based luminescent materials. Hydrogels room phosphorescence have number applications, properties can limit potential. authors report wood-based phosphorescence,

Language: Английский

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Supramolecular self-sorting assembly enabling liquid-phase ultralong organic phosphorescence with multicolor fluorescence for dual-modality detection

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161092 - 161092

Published: Feb. 1, 2025

Language: Английский

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Multi-stimuli responsive Pt(II) complexes for information storage and anti-counterfeiting

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155049 - 155049

Published: Aug. 23, 2024

Language: Английский

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Organic doped red room-temperature afterglow materials based on 2,3,5-triarylfuro[3,2-b]pyridines through Förster-resonance energy transfer

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 156584 - 156584

Published: Oct. 10, 2024

Language: Английский

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