Aggregation‐Induced Emission: New Vistas at the Aggregate Level

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(25), P. 9888 - 9907

Published: Feb. 12, 2020

Aggregation-induced emission (AIE) describes a photophysical phenomenon in which molecular aggregates exhibit stronger than the single molecules. Over course of last 20 years, AIE research has made great strides material development, mechanistic study and high-tech applications. The achievements demonstrate that show many properties functions are absent species. In this review, we summarize advances field its related areas. We specifically focus on new materials attained by beyond microscopic level. hope review will inspire more into ensembles at meso level lead to significant progress biological science.

Language: Английский

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Aggregate Science: From Structures to Properties

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(36)

Published: July 30, 2020

Abstract Molecular science entails the study of structures and properties materials at level single molecules or small interacting complexes molecules. Moving beyond well‐defined complexes, aggregates (i.e., irregular clusters many molecules) serve as a particularly useful form that often display modified wholly new compared to their molecular components. Some unique phenomena such polymorphic aggregates, aggregation‐induced symmetry breaking, cluster excitons are only identified in few examples exotic features. Here, by virtue flourishing research on emission, concept “aggregate science” is put forward fill gaps between aggregates. Structures aggregate scale also systematically summarized. The structure–property relationships established for expected contribute technological development. Ultimately, may become an interdisciplinary field serves general platform academic research.

Language: Английский

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19.31% binary organic solar cell and low non-radiative recombination enabled by non-monotonic intermediate state transition

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: March 30, 2023

Non-fullerene acceptors based organic solar cells represent the frontier of field, owing to both materials and morphology manipulation innovations. Non-radiative recombination loss suppression performance boosting are in center cell research. Here, we developed a non-monotonic intermediate state strategy for state-of-the-art by employing 1,3,5-trichlorobenzene as crystallization regulator, which optimizes film process, regulates self-organization bulk-heterojunction manner, i.e., first enhancing then relaxing molecular aggregation. As result, excessive aggregation non-fullerene is avoided have achieved efficient with reduced non-radiative loss. In PM6:BTP-eC9 cell, our successfully offers record binary efficiency 19.31% (18.93% certified) very low 0.190 eV. And lower 0.168 eV further PM1:BTP-eC9 (19.10% efficiency), giving great promise future

Language: Английский

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Nonconventional luminophores: characteristics, advancements and perspectives

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(22), P. 12616 - 12655

Published: Jan. 1, 2021

Mechanisms, recent advancements and perspectives concerning nonconventional luminophores free of classic conjugates but with intrinsic photoluminescence are discussed.

Language: Английский

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Organic Cocrystals: Beyond Electrical Conductivities and Field‐Effect Transistors (FETs)

Angewandte Chemie International Edition, Journal Year: 2019, Volume and Issue: 58(29), P. 9696 - 9711

Published: Feb. 13, 2019

Organic cocrystals based on noncovalent intermolecular interactions (weak interactions) have aroused interest owing to their unpredicted and versatile chemicophysical properties applications. In this Minireview, we highlight recent research organic reducing the aggregation-caused quenching (ACQ) effect, tuning light emission, ferroelectricity multiferroics, optical waveguides, stimuli-responsiveness. We also summarize progress made in field including revealing structure-property relationships developing unusual properties. Moreover, provide a discussion current achievements, limitations perspectives as well some directions inspiration for further investigation cocrystals.

Language: Английский

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Multiple H‐Bonding Chain Extender‐Based Ultrastiff Thermoplastic Polyurethanes with Autonomous Self‐Healability, Solvent‐Free Adhesiveness, and AIE Fluorescence

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 31(4)

Published: Oct. 9, 2020

Abstract Developing an autonomous room temperature self‐healing supramolecular polyurethane (PU) with toughness and stiffness remains a great challenge. Herein, novel concept that utilizes T‐shaped chain extender double amide hydrogen bonds in side to extend PU prepolymers construct highly stiff tough integrated functions is reported. Mobile side‐chain H‐bonds afford large flexibility modulate the of PUs ranging from elastomer (105.87 MPa Young's modulus, 27 kJ m −2 tearing energy), solvent‐free hot‐melt adhesive, coating. The dynamic multiple self‐healability at (25 ° C). Due rapid reconstruction bonds, this adhesive demonstrates high adhesion strength, fast curing, reusability, long‐term adhesion, excellent low‐temperature resistance. Intriguingly, emits intrinsic blue fluorescence presumably owing aggregation‐induced emission tertiary amine domains induced by H‐bonds. explored as counterfeit ink coated on predesigned pattern, which visible‐light invisible UV‐light visible. This work represents universal facile approach fabricate supertough tailorable extension H‐bonding extenders.

Language: Английский

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AIE-based luminescence probes for metal ion detection

Coordination Chemistry Reviews, Journal Year: 2020, Volume and Issue: 429, P. 213693 - 213693

Published: Dec. 17, 2020

Language: Английский

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500‐Fold Amplification of Small Molecule Circularly Polarised Luminescence through Circularly Polarised FRET

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 60(1), P. 222 - 227

Published: Oct. 8, 2020

Strongly dissymmetric circularly polarised (CP) luminescence from small organic molecules could transform a range of technologies, such as display devices. However, highly emission is usually not possible with molecules, which typically give factors photoluminescence (gPL ) less than 10-2 . Here we describe an almost 103 -fold chiroptical amplification π-extended superhelicene when embedded in achiral conjugated polymer matrix. This combination increases the |gPL | approximately 3×10-4 solution to 0.15 blend film solid-state. We propose that arises simply through chiral environment effect, but instead due electrodynamic coupling between electric and magnetic transition dipoles donor acceptor, subsequent CP Förster resonance energy transfer. show this effect holds across several hosts thus represents simple versatile approach enhance g-factors molecules.

Language: Английский

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Creating Organic Functional Materials beyond Chemical Bond Synthesis by Organic Cocrystal Engineering

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(46), P. 19243 - 19256

Published: Nov. 3, 2021

Organic cocrystal engineering refers to two or more organic molecules stoichiometrically combined and held together by noncovalent intermolecular interactions, which differs from standard chemical synthesis involving covalent bond breakage formation. cocrystals have unique properties offer a new strategy for creating enhanced organics. First, however, some key questions need be addressed: How do diverse monomers affect the interaction kinetics during cocrystallization? forces in functions? In this Perspective, definition advantages of engineering, specifically construction reliable interaction-stacking structure-performance relationship, are outlined. Additionally, recent developments field above discussed. Finally, brief conclusion hints on likely future provided.

Language: Английский

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Color‐Tunable Supramolecular Luminescent Materials

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(22)

Published: Oct. 22, 2021

Abstract Constructing multicolor photoluminescent materials with tunable properties is an attractive research objective on account of their abundant applications in science and biomedical engineering. By comparison covalent synthesis, supramolecular chemistry has provided a more competitive promising strategy for the production organic regulation photophysical properties. taking advantage dynamic reversible noncovalent bonding interactions, strategies can, not only simplify design fabrication materials, but can also endow them reversibility stimuli responsiveness, making it much easier to adjust superstructures materials. Occasionally, possible introduce emergent into these which are absent precursor compounds, broadening potential applications. In attempt highlight state‐of‐the‐art available construction smart luminescent overview color‐tunable presented this Review, emphasis being placed examples drawn from host–guest complexes, assemblies crystalline The synthesis room‐temperature phosphorescent modulation described. Finally, future directions scientific challenges field emissive discussed.

Language: Английский

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