Fluorescent aggregation-induced emission (AIE)-based thermosetting electrospun nanofibers: fabrication, properties and applications

Li, Weili; Ding, Yexing; Tebyetekerwa, Mike; Xie, Yixiao; Lin, Wang; Li, Hongkun; Hu, Rong; Wang, Zhiming; Qin, Anjun; Tang, Ben Zhong

doi:10.1039/c9qm00342h

Cited by 49 publications

(32 citation statements)

References 28 publications

(29 reference statements)

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“…[34] Meanwhile, AIE has great potential for a myriad of applications. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] For example, recent literature reports have explored the practical applications of AIE luminogens (AIEgens), as components of electronic devices, [52][53][54][55][56][57][58][59] chemo-/biosensors, [60][61][62][63][64][65][66] bioimaging agents, [67][68][69][70][71][72] and theranostics. [73][74][75][76][77][78] By contrasting AIE with ACQ, we can conclude that molecular-level theories and properties do not necessarily correlate with properties of aggregates.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Aggregate Science: From Structures to Properties

et al. 2020

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“…18 Structurally modifying an organic molecule through π-interactions usually results in improved performance at the expense of the original luminescence. [19][20][21] Tetraphenylethene (TPE) is a typical molecule that exhibits blue aggregation-induced emission (AIE) with a moderate solid-state quantum yield (QY; 25%). [22][23][24] Thus, continuous efforts have been devoted to seeking a balance between its structural extension and the retention of its blue emission while improving emission efficiency.…”

Section: Introductionmentioning

confidence: 99%

Fine Tuning of the Electronic Properties of Novel BTPE Using Oligosilanyl Linkages and Their Application in Rapid High-Resolution Visualization of Latent Fingerprints

et al. 2020

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Structural modifications through π-interactions usually result in redshifts in luminescence and, as a consequence, the loss of the natural color of the chromophore. Besides, employing Si-Si σ-bridging to manipulate the electronic properties of organic materials has remained largely unexplored. Herein, we report a series of novel bis-tetraphenylethenes (BTPEs) with oligosilanyl linkages, termed BTPE-Sin molecules, used to manipulate the photophysical properties of luminogens subtly through σ-π conjugation. These oligosilanyl-bridged molecules were thermally, highly stable, and exhibited enhanced aggregation-induced emissions, as well as luminescence efficiencies while retaining most of their original color. Our current BTPEs fabrications have easy-to-operate, fast, and high-resolution identification properties toward LFPs. Also, they are highly specific to individuals, and hence, vital in forensic investigations. We achieved these features through the introduction of oligosilanyl chains that increased the lipophilicity of the significantly. This work offers a universal and straightforward approach for the generation of highly emissive organic materials and enables fine-tuning of their electronic properties for multifunctional applications.

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“…Recently, a series of propeller-like molecules were found to display a phenomenon exact opposite of the ACQ effect. [48][49][50][51][52][53] These molecules are non-/weakly emissive in the molecularly dissolved state but fluoresce strongly in the condensed state.…”

Section: Introductionmentioning

confidence: 99%

A Synergy Between Push-Pull Electronic Effect and Twisted Conformation for High-Contrast Mechanochromic AIEgens

Wang¹,

Qi²,

Fu³

et al. 2020

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Mechanochromic (MC) luminogens in response to external stimulus have shown promising applications as pressure sensors and memory devices. While, research on their underlying mechanism is still in the initial stage. Here, three pyridinium-functionalized tetraphenylethylenes bearing <i>n</i>-pentyloxy group, hydrogen, nitro group, namely TPE-OP, TPE-H and TPE-NO, are designed to systematically investigate the influence of push-pull electronic effect and molecular conformation on MC luminescence. Upon anisotropic grinding and isotropic hydrostatic compression, TPE-OP with strong intramolecular charge transfer (ICT) affords the best MC behavior among them. Analysis of three polymorphs of TPE-H clearly indicates that planarization of molecular conformation is responsible for their bathochromic shift under mechanical stimuli. Theoretical calculations also verify that high twisting stress of AIEgens can be released under high pressure. This study presents a clear picture for MC behaviour and proposes an effective strategy to achieve high-contrast MC luminescence.

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Fluorescent aggregation-induced emission (AIE)-based thermosetting electrospun nanofibers: fabrication, properties and applications

Abstract: Preparation and study of the rapid formation of electrospun fluorescent thermosetting fibers via chemical knitting of a thermosetting polymer with AIEgens and their possible applications as fluorescent probes.

Cited by 49 publications

References 28 publications

Aggregate Science: From Structures to Properties

Aggregate Science: From Structures to Properties

Fine Tuning of the Electronic Properties of Novel BTPE Using Oligosilanyl Linkages and Their Application in Rapid High-Resolution Visualization of Latent Fingerprints

A Synergy Between Push-Pull Electronic Effect and Twisted Conformation for High-Contrast Mechanochromic AIEgens

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