Responsive Organic Fluorescent Aggregates Based on Ion‐π Interactions Away from Fluorescent Conjugated Groups DOI

Guanqun Zhu,

Zhiyang Liu, Qi Qi

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(29)

Published: May 7, 2024

Abstract Responsive organic luminescent aggregates have a wide range of application fields, but currently there is still lack reasonable molecular design strategies. Introducing ion‐π interactions into molecules can effectively alter their properties. However, current research typically focuses on ion localization at conjugated groups with the strong interaction forces. In this work, we introduce flexible alkoxy chain spacers between fluorescent and sites, then adjust fluorescence performance molecule by changing strength interactions. Bromine ion‐based exhibit high stable quantum yields in crystals amorphous powders under external stimuli. Hexafluorophosphate weak yield very low powders, showing variable intensities This demonstrates new class responsive solid‐state materials.

Language: Английский

Recent advances in NIR-II fluorescence/photoacoustic dual-modality imaging probes DOI
Wei Pan, Muhammad Rafiq,

Waqas Haider

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215907 - 215907

Published: May 12, 2024

Language: Английский

Citations

29
Recent advances in near-infrared-II organic J-aggregates for bio-applications DOI

Junchao Xu,

Xudong Zheng, Tian‐Bing Ren

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 528, P. 216379 - 216379

Published: Jan. 4, 2025

Language: Английский

Citations

4
Xanthene-Based NIR organic phototheranostics agents: Design strategies and biomedical applications DOI
Xiao‐Yun Ran, Yuanfeng Wei, Yanling Wu

et al.

Journal of Materials Chemistry B, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Near-infrared fluorescence imaging is key in biological exploration. Short emission wavelengths of xanthene dyes limit their use. Structural modifications shift emissions to the NIR-I/II range, enhancing biomedical applications.

Language: Английский

Citations

1
Responsive Organic Fluorescent Aggregates Based on Ion‐π Interactions Away from Fluorescent Conjugated Groups DOI Creative Commons

Guanqun Zhu,

Zhiyang Liu, Qi Qi

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(29)

Published: May 7, 2024

Responsive organic luminescent aggregates have a wide range of application fields, but currently there is still lack reasonable molecular design strategies. Introducing ion-π interactions into molecules can effectively alter their properties. However, current research typically focuses on ion localization at conjugated groups with the strong interaction forces. In this work, we introduce flexible alkoxy chain spacers between fluorescent and sites, then adjust fluorescence performance molecule by changing strength interactions. Bromine ion-based exhibit high stable quantum yields in crystals amorphous powders under external stimuli. Hexafluorophosphate weak yield very low powders, showing variable intensities This demonstrates new class responsive solid-state materials.

Language: Английский

Citations

6
Tailoring the permittivity of passivated dyes to achieve stable and efficient perovskite solar cells with modulated defects DOI Creative Commons
Rongxin Wang, Zhichao Lin, Xinhua Ouyang

et al.

Materials Today Advances, Journal Year: 2024, Volume and Issue: 22, P. 100501 - 100501

Published: May 21, 2024

Additive engineering has been demonstrated to effectively mitigate carrier losses associated with high surface defects of perovskite at grain boundaries, bulk, and interfaces. Nevertheless, there are persistent challenges in enhancing the passivation effects interfaces without compromising extraction efficiency. In this work, a feasible strategy incorporating multiple functional groups developed simultaneously passivate boundaries/interfaces, enhance charge transport by tuning permittivity (εr). Two novel D-π-A type molecules, (Z)-3-((4'-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl)methylene)-5- fluoroindolin-2-one (TBI) (Z)-2-(5-((4'-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl) methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid (TBR) were synthesized. Due introduction rhodanine acceptor, εr dye molecules is significantly increased (εr TBR 2.5, TBI 1.9), making closer that spiro-OMeTAD 2.9), which helps reduce dielectric mismatch between top HTL. Moreover, strong coordination interactions Pb2+/FA+ SnO2-layer thioxothiazolidin-3-acetic boundaries The PSC fabricated based on shows improved VOC, JSC, FF, resulting peak PCE 23.74 %, along remarkable stability maintaining above 86 % initial performance after 1440 h aging air 60 relative humidity. This work sets stage for further improving solar cells.

Language: Английский

Citations

5
Spacer Twisting Strategy to Realize Ultrabright Near-Infrared II Polymer Nanoparticles for Fluorescence Imaging-Guided Tumor Phototheranostics DOI
Yifan Wu, Han Yu,

Chunbin Li

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(41), P. 28178 - 28188

Published: Oct. 3, 2024

Conjugated polymers are becoming popular near-infrared II (NIR-II) phototheranostic agents (PTAs) due to their numerous advantages, such as high photostability, large molar extinction coefficients, and excellent photothermal properties. However, the strong π-π interactions between chains of conjugated resulted in generally low NIR-II emission quantum yields (QY). Therefore, synthesis with QY is an interesting but challenging task. Herein, we proposed a spacer twisting strategy realize ultrabright polymer nanoparticles for fluorescence imaging-guided tumor phototheranostics. Theoretical calculations indicated that PY-IT has largest dihedral angle largely π-conjugated skeleton spacer, which can effectively inhibit intermolecular stacking, resulting improved 16.5% nanoparticles. In addition, NPs perform imaging treatment tumors. The work presents some valuable guides achieving polymeric PTAs QY.

Language: Английский

Citations

5
Robust and Flexible Rubber Composite with High Photothermal Properties Achieved by In Situ ZDMA Assisted Dispersion of Eumelanin and its Hydrophobic Photothermal Application DOI

Luji Li,

Zihao Lin,

Zehua He

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: June 6, 2024

Abstract Eumelanin, a natural, biocompatible, and biodegradable photothermal agent derived from biomass, has attracted increasingly considerable attention due to its outstanding conversion efficiency. Unfortunately, tendency aggregate in flexible non‐polar polymers, owing abundant polar groups on the surface, severely restricted application of eumelanin composite field. Herein, feasible strategy is proposed disperse rubber matrix via situ generation Zinc dimethacrylate (ZDMA). The graft‐polymerization ZDMA promotes interfacial compatibility between styrene butadiene (SBR) eumelanin, achieving uniform dispersion SBR. exhibits tensile strength 11.4 MPa, acceptable elongation at break 146%, efficiency up 75.2% with only 1 wt% eumelanin. Furthermore, based easy‐processing SBR matrix, treated sandpaper template technique sprayed trimethoxy(1H,1H,2H,2H‐perfluorodecyl)silane (PFDTMS) endow material near superhydrophobicity (water contact angle 147.9°) capacity. Hydrophobicity provides excellent icing resistance, droplet surfaces extending more than twice as long freeze. Moreover, this hydrophobic remarkable anti‐frosting, de‐frosting, de‐icing capabilities.

Language: Английский

Citations

4
Synchronously Manipulating the D−A Interaction and Planarity in Semiconducting Polymers to Achieve 84.7% Photothermal Conversion Efficiency for NIR‐II Imaging‐Guided Tumor Therapy DOI

Xiankun Hu,

Qian Jia, Qiyu Fang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: July 18, 2024

Abstract Exploiting photothermal agents with second‐near‐infrared (NIR‐II, 1000−1700 nm) emission and a high conversion efficiency (PCE) is an appealing challenging task. Herein, by simultaneously tailoring the D−A interaction planarity in fluorophores, two donor‐acceptor (D−A) −type semiconducting polymers (SPs), T‐BTP B‐BTP, are constructed. Compared T‐BTP, B‐BTP shows increased intramolecular interactions improved molecular planarity, leading to bathochromic‐shift absorption, NIR‐II emission, PCE. Notably, NPs achieve remarkable PCE of 84.7%, which among highest PCEs SPs fluorescence imaging‐guided therapy (PTT). Because these promising features, successfully used vascular imaging cancer therapy. This study provides valuable guidelines for development high‐performance SPs.

Language: Английский

Citations

4
Mitochondria-targeting Nanomedicines with Autophagy Inhibitor to Enhance Cancer Photothermal-Chemotherapy DOI Creative Commons
Shuqi Chen, Wenxia Gao,

Shuhua Chang

et al.

Regenerative Biomaterials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

In this article, we fabricated nanomedicines with mitochondrial targeting function and autophagy inhibitor for enhancing cancer photothermal-chemotherapy. The nanoparticles were gold (AuNPs) as cores amphiphilic dextran (3-carboxypropyl) triphenyl phosphorus bromide β-cyclodextrin (β-CD) modification (TPP-DCD) shells; the chemotherapeutic doxorubicin (DOX) chloroquine (CQ) encapsulated in nanoparticles. TPP-DCD was synthesized via immobilization of 2-aminoethanethiol modified β-CD triphenylphosphonium on to receive coordination interaction AuNPs mitochondria targeting. size, morphology properties Au@DOX/CQ@TPP-DCD studied. efficiently targeted cellular produce reactive oxygen species photothermal effect under NIR irradiation. released DOX CQ could not only kill tumor cells directly, but also inhibit enhance therapeutic effects. Both vitro vivo anticancer activities investigated detail. imaging demonstrated that exhibited efficient targeting, accumulation retention tumor-bearing mice. apoptosis suppression greatly accelerated addition 808 nm nanomedicine significant synergistic therapy, 75% tumors mice disappeared. nanoparticle is a promising therapy

Language: Английский

Citations

0
A Multifunctional Nanoplatform Based on Carbon Nanotubes Loaded with Persistent Luminescent Nanoparticles for Photocatalysis, Photothermal Therapy, and Drug Delivery Applications DOI

Houlin Li,

Mamutjan Tursun,

Aikelaimu Aihemaiti

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 13592 - 13604

Published: Feb. 18, 2025

Persistent luminescent nanoparticles (PLNPs) exhibit ultralong afterglow properties due to their excellent light storage mechanism and great potential for biomedical, energy, environmental applications. However, PLNPs have certain limitations regarding photogenerated carrier separation efficiency, absorption range, specific surface area, which limit efficiency performance in practical Herein, we reported a multifunctional nanoplatform based on carbon nanotubes (CNTs) loaded with (ZnGa1.97O4:Cr0.01, Bi0.02, ZGO). Experimental characterizations density functional theory calculations showed that the combination of CNTs significantly reduced recombination carriers PLNPs, increased enhanced intensity near-infrared (NIR) region. By optimizing ratio, ZGO-10CNTs not only exhibited greatest photocatalytic activity pollutant degradation but also generating reactive oxygen species, demonstrating therapy In addition, demonstrated NIR photothermal conversion pH-responsive drug release. The integration led development capabilities degradation, therapy, delivery, thus expanding design nanoplatforms PLNPs. construction this provides new strategies cancer opens up perspectives applications energy fields.

Language: Английский

Citations

0