Charge carrier trapping in organic semiconductors: Origins, impact and strategies for mitigation

Synthetic Metals, Journal Year: 2024, Volume and Issue: 307, P. 117661 - 117661

Published: May 28, 2024

Language: Английский

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Impact of crystallinity and grain density on the charge-carrier distribution and transport in organic semiconductors

Organic Electronics, Journal Year: 2024, Volume and Issue: 127, P. 107006 - 107006

Published: Feb. 4, 2024

Language: Английский

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Engineering of imidazo[1,2-a]pyridine into multifunctional dual-state emissive (DSE) luminogens for hydrazine sensing and cell-imaging

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

Published: Jan. 1, 2025

Balancing the donor–acceptor (D–A) systems and spatial configurations to precisely modulate dual-state emission (DSE) properties in imidazo[1,2- a ]pyridine-derived luminogens for applications cell imaging hydrazine sensing.

Language: Английский

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Organic high-temperature afterglow materials: an advancing and impactful research area

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

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Seeing is Believing: Facile Amphiphilic AIEgen Unveils Selective and Ultrafast Wash-Free Dead Cell Imaging

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: unknown, P. 137383 - 137383

Published: Feb. 1, 2025

Language: Английский

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Multi‐Stimulus Responsive Nonconventional Fluorescent Supramolecular Polymeric Material

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Abstract Fluorescent supramolecular materials have attracted a lot of attention over the past few decades. However, those can respond to multiple stimuli are not often reported, especially for nonconventional fluorescent materials. Here, material is reported that temperature/electrical heating, humidity, volatile acids/organic amines, and mechanical strain. This prepared by physical mixing oligomeric polyethyleneimine (o‐PEI) polyacrylic acid (o‐PAA). Although they almost non‐fluorescent, their combination produces bright fluorescence, emission bands shift longer wavelengths as amount o‐PAA increases. Calculations based on Density Functional Theory (DFT) show there strong noncovalent interactions between o‐PEI o‐PAA, resulting in through‐space conjugation cluster‐triggered emission. By studying relationship intensity, temperature, molecular motion, dependence intensity relaxation time established, which will provide insight into luminescence origin In addition, this shows good self‐healing ability. The luminescence, responsiveness self‐reparability all related but reversible bonds link o‐PAA. work only highlights value polymers, also enriches research

Language: Английский

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Herringbone-to-Pi Stack Packing Transition Promotes Intermolecular Charge Transfer for Persistent Room-Temperature Phosphorescence

Published: Jan. 1, 2025

Language: Английский

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Adjustable Room‐Temperature Phosphorescence through Tunable Aggregation of Dopants in Polymers and its Application in Hydrazine Hydrate Detection

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

Published: March 30, 2025

Abstract The development of stimulus‐responsive phosphorescent materials has attracted increasing attention owing to their advantages in practical applications. However, those responses toxic and hazardous chemicals remain rare the lack suitable design strategies. Herein, a new approach regulate room‐temperature phosphorescence (RTP) effect doping systems is developed, which two polar phenothiazine derivatives functionalized with trifluoroacetyl groups act as guests polymer matrices different polarities function hosts. Regulated by host, transition from aggregation dispersion can be realized for guest molecules, resulting enhanced RTP. Unlike traditional materials, doped system undergo dynamic state upon exposure hydrazine hydrate vapor, thereby activating phosphorescence. Building on these findings, an effective model established investigate effects transitions between aggregated dispersed states. A novel sensor developed detect hydrates.

Language: Английский

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Boosting The Solid‐State Luminescence of Phenazine Derivatives by Enhancing Intermolecular Hydrogen Bonds and π–π Interactions in Cocrystals

Chemistry - An Asian Journal, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Abstract Six monosubstituted phenazine derivatives were designed and synthesized for constructing cocrystals to investigate their structure–property relationship. It was found that 2‐substituted phenazines could form with 2,6‐dimethylphenylboronic acid (DBA). These exhibited red‐shifted enhanced luminescence relative individual components, especially 2NP‐DBA whose efficiency nearly 100 times higher than of 2NP. By analyzing the single‐crystal structures hydrogen bonds π–π interactions between molecules detected in cocrystals, which suppressed nonradiative transition pathways. Consequently, all three demonstrated strong continuous interactions, differed from previously reported enhancement resulting destruction interactions. An in‐depth investigation these can not only provide a better understanding structure‐property relationship organic luminescent materials, but also help develop materials intense solid‐state In addition, optical response acidic vapors has been successfully applied anti‐counterfeiting.

Language: Английский

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A fractal rheological model for glass transition of polymers to understand self-similarity from micro to macro multi-scaling

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112722 - 112722

Published: May 1, 2025

Language: Английский

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