Integration of Motion and Stillness: A Paradigm Shift in Constructing Nearly Planar NIR-II AIEgen with Ultrahigh Molar Absorptivity and Photothermal Effect for Multimodal Phototheranostics

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

The two contradictory entities in nature often follow the principle of unity opposites, leading to optimal overall performance. Particularly, aggregation-induced emission luminogens (AIEgens) with donor–acceptor (D–A) structures exhibit tunable optical properties and versatile functionalities, offering significant potential revolutionize cancer treatment. However, trapped by low molar absorptivity (ε) owing distorted configurations, ceilings their photon-harvesting capability corresponding phototheranostic performance still fall short. Therefore, a research paradigm from twisted configuration near-planar structure featuring high ε is urgently needed for AIEgens development. Herein, introducing strategy "motion stillness" into highly planar A–D–A skeleton, we successfully developed near-infrared (NIR)-II AIEgen Y5-2BO-2BTF, which boasts an impressive 1.06 × 105 M–1 cm–1 photothermal conversion efficiency (PCE) 77.8%. modification steric hindrance on benzene ring acceptor unit aggregation-caused quenching counterpart Y5-2BO, meta-CF3-substituted naphthyl, leads reversely staggered packing various intermolecular noncovalent conformational locks Y5-2BO-2BTF ("stillness"). Furthermore, −CF3 moiety acted as flexible motion ultralow energy barrier, significantly facilitating process loose aggregates ("motion"). Accordingly, nanoparticles enabled tumor eradication pulmonary metastasis inhibition through NIR-II fluorescence-photoacoustic-photothermal imaging-navigated type I photodynamic-photothermal therapy. This work provides first evidence that conformation stacking arrangement could serve novel molecular design direction AIEgens, shedding new light constructing superior agents bioimaging

Language: Английский

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Polymerization-induced emission

Materials Horizons, Journal Year: 2019, Volume and Issue: 7(4), P. 987 - 998

Published: Dec. 17, 2019

Polymerization-induced emission: a chemical route for uniting nonluminescent monomers into luminescent polymers.

Language: Английский

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Photoluminescent Anisotropy Amplification in Polymorphic Organic Nanocrystals by Light-Harvesting Energy Transfer

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(15), P. 6157 - 6161

Published: April 4, 2019

Polymorphism and anisotropy are fundamental phenomena of crystalline materials. However, the structure-dependent photoluminescent (PL) in polymorphic organic crystals has remained unexplored. Herein, two nanocrystals, green-emitting nanorods (PtD-g) yellow-emitting nanoplates (PtD-y), were obtained from a platinum(II)−β-diketonate complex. The PtD-y display remarkable PL with an ratio up to 0.87 whereas emission PtD-g is nearly unpolarized. polarization properties rationalized on different molecular packing these crystals. By light-harvesting energy transfer, successfully used amplify red-emitting platinum acceptor (PtA) doped into donor matrix, which otherwise weakly polarized as pure

Language: Английский

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Manipulating Interfacial Charge-Transfer Absorption of Cocrystal Absorber for Efficient Solar Seawater Desalination and Water Purification

ACS Energy Letters, Journal Year: 2020, Volume and Issue: 5(8), P. 2698 - 2705

Published: July 28, 2020

Solar water evaporation has been considered as a promising technique to harvest solar energy for practicable evaporation. While different classes of materials have exploited absorbers, date there is no report on using small organic molecules because their narrow optical absorption spectra. We show here the first time that full spectrum can be conveniently achieved with commercially available via formation charge-transfer complex (CTC) cocrystals between suitable donor and acceptor molecules. demonstrate porous polymer scaffold loaded CTC cocrystal efficient photothermal conversion leading high rate 1.67 kg m–2 h–1 90.3% under 1 Sun, practical multiple wastewater purification. This high-performance absorber molecules, suggesting new class absorbers deserving more attention.

Language: Английский

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The development of mechanoluminescence from organic compounds: breakthrough and deep insight

Materials Chemistry Frontiers, Journal Year: 2019, Volume and Issue: 4(2), P. 317 - 331

Published: Oct. 4, 2019

The organic mechanoluminescence (ML) happens at the crack surface under force, and ML composition is becoming more complicated, extending from normal fluorescence to phosphorescence, persistent room temperature phosphorescence photo-sensitive ML.

Language: Английский

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