Sparks fly when AIE meets with polymers

Li, Yuanyuan; Liu, Shunjie; Han, Ting; Zhang, Haoke; Chuah, Clarence; Kwok, Ryan T. K.; Lam, Jacky W. Y.; Tang, Ben Zhong

doi:10.1039/c9qm00404a

Cited by 75 publications

(56 citation statements)

References 93 publications

(95 reference statements)

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“…Generally, structure decides the material property and the property can in part reflect the structural variation. [184][185][186][187] In this section, peculiar properties from the abovementioned aggregate structures will be thoroughly introduced from three categories: one-component, two-component, and multicomponent aggregates. The properties to be discussed will cover PL, electroluminescence (EL), biological applications, energy conversion, information storage, etc.…”

Section: Propertiesmentioning

confidence: 99%

Aggregate Science: From Structures to Properties

et al. 2020

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

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Section: Propertiesmentioning

confidence: 99%

Aggregate Science: From Structures to Properties

et al. 2020

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“…Aggregation-induced emission (AIE) is an inventive uorescent technique and has the potential to address this issue. 4,[33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] AIE illustrates a unique photophysical phenomenon where molecules are non-emissive in the discrete state because of active intramolecular motions, but emit energetically when aggregated due to the restriction of intramolecular motions (RIM). To drive emission to the NIR-II window, AIE luminogens (AIEgens) are designed as conjugated donor-acceptor (D-A) structures, where they are being twisted with each other (dihedral angle of q, Fig.…”

Section: Introductionmentioning

confidence: 99%

Structural and process controls of AIEgens for NIR-II theranostics

et al. 2021

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“…As such, fluorophores with both redshifted emission and high quantum yield (QY) can be achieved simultaneously by combining seemingly contradicting individuals, which is a conceptually straightforward but enormous challenge in reality. As a cutting-edge fluorescent technology, aggregation-induced emission (AIE) holds great potential to address this issue [29][30][31][32][33] . AIE luminogens (AIEgens) emit intensely when aggregated because of the restriction of intramolecular motion (RIM) mechanism ( Fig.…”

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Design of AIEgens for near-infrared IIb imaging through structural modulation at molecular and morphological levels

et al. 2020

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Fluorescence imaging in near-infrared IIb (NIR-IIb, 1500–1700 nm) spectrum holds a great promise for tissue imaging. While few inorganic NIR-IIb fluorescent probes have been reported, their organic counterparts are still rarely developed, possibly due to the shortage of efficient materials with long emission wavelength. Herein, we propose a molecular design philosophy to explore pure organic NIR-IIb fluorophores by manipulation of the effects of twisted intramolecular charge transfer and aggregation-induced emission at the molecular and morphological levels. An organic fluorescent dye emitting up to 1600 nm with a quantum yield of 11.5% in the NIR-II region is developed. NIR-IIb fluorescence imaging of blood vessels and deeply-located intestinal tract of live mice based on organic dyes is achieved with high clarity and enhanced signal-to-background ratio. We hope this study will inspire further development on the evolution of pure organic NIR-IIb dyes for bio-imaging.

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Sparks fly when AIE meets with polymers

Abstract: The special structure of AIEgens facilitates the understanding and application of polymers.

Cited by 75 publications

References 93 publications

Aggregate Science: From Structures to Properties

Aggregate Science: From Structures to Properties

Structural and process controls of AIEgens for NIR-II theranostics

Design of AIEgens for near-infrared IIb imaging through structural modulation at molecular and morphological levels

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