An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli

Tu, Yujie; Yu, Yeqing; Xiao, Diwen; Liu, Junkai; Zhao, Zheng; Liu, Zhiyang; Lam, Jacky W. Y.; Tang, Ben Zhong

doi:10.1002/advs.202003525

Cited by 24 publications

(14 citation statements)

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“…29 At fw of less than 50%, the enhancement of TBC emission was due to the increased polarity of the solvent mixture. 31 However, aggregates merely formed at high water fraction whose internal polarity was less affected by the surrounding environment. Meanwhile, a portion of the TBC emission was reabsorbed by the TSC species via the Förster resonance energy transfer (FRET) process, which decreased the emission from TBC but increased the emission from TSC.…”

Section: Resultsmentioning

confidence: 99%

How to Manipulate Through-Space Conjugation and Clusteroluminescence of Simple AIEgens with Isolated Phenyl Rings

Zhang

et al. 2021

J. Am. Chem. Soc.

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124

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Apart from the traditional through-bond conjugation (TBC), through-space conjugation (TSC) is gradually proved as another important interaction in photophysical processes, especially for the recent observation of clusteroluminescence from nonconjugated molecules. However, unlike TBC in conjugated chromophores, it is still challenging to manipulate TSC and clusteroluminescence. Herein, simple and nonconjugated triphenylmethane (TPM) and its derivatives with electron-donating and electron-withdrawing groups were synthesized, and their photophysical properties were systematically studied. TPM was characterized with visible clusteroluminescence due to the intramolecular TSC. Experimental and theoretical results showed that the introduction of electron-donating groups into TPM could red-shift the wavelength and increase the efficiency of clusteroluminescence simultaneously, due to the increased electronic density and stabilization of TSC. However, TPM derivatives with electron-withdrawing groups showed inefficient or even quenched clusteroluminescence caused by the vigorous excited-state intramolecular motion and intermolecular photoinduced electron transfer process. This work provides a reliable strategy to manipulate TSC and clusteroluminescence.

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Section: Resultsmentioning

confidence: 99%

How to Manipulate Through-Space Conjugation and Clusteroluminescence of Simple AIEgens with Isolated Phenyl Rings

Zhang

et al. 2021

J. Am. Chem. Soc.

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124

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“…However, the following example presents a very interesting solvent effect that is different from the TICT. [ 171 ] As shown in Figure a, the PL intensity of AIEgen of ASQ first increased and then decreased when gradually increasing the solvent polarity. The plot of quantum yield (QY) versus the normalized Reichardt's parameter ( E T N ) showed a nonmonotonic concave curve (Figure 13b).…”

Section: Polarity Responsive Aiegensmentioning

confidence: 97%

“…As solvent polarity increases, the emission redshifts and declines. As illustrated in Figure 13c,d, in low polarity solvents, the proximity effect dominated to quench the emission, [ 171 ] and then the energy gap between the (n, π*) min and (π, π*) min enlarged to enhance the emission intensity in medium polarity solvents. However, the emission enhancement was not unlimited.…”

Section: Polarity Responsive Aiegensmentioning

confidence: 99%

“…a–d) Reproduced under the terms of the CC‐BY Creative Commons Attribution 4.0 International license ( https://creativecommons.org/license/by/4.0). [ 171 ] Copyright 2020, The Authors, published by Wiley‐VCH.…”

Section: Polarity Responsive Aiegensmentioning

confidence: 99%

“…In the above seven sections, we have presented representative examples of specific stimuli, that is, force, light, polarity, temperature, electricity, ion, and pH. It is noteworthy that many AIEgens are capable of responding to multiple stimuli simultaneously including some cases that we have elaborated above, [ 77,162,171,210,221–225 ] which are more attractive as they may achieve a diverse range of practical applications. For example, compound 12 is a simple but versatile multi‐functional AIEgen that can simultaneously respond to four different kinds of stimuli including electricity, polarity, temperature, and force.…”

Section: Ph‐responsive Aiegensmentioning

confidence: 99%

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Stimuli‐Responsive AIEgens

et al. 2021

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The unique advantages and the exciting application prospects of AIEgens have triggered booming developments in this area in recent years. Among them, stimuli‐responsive AIEgens have received particular attention and impressive progress, and they have been demonstrated to show tremendous potential in many fields from physical chemistry to materials science and to biology and medicine. Here, the recent achievements of stimuli‐responsive AIEgens in terms of seven most representative types of stimuli including force, light, polarity, temperature, electricity, ion, and pH, are summarized. Based on typical examples, it is illustrated how each type of systems realize the desired stimuli‐responsive performance for various applications. The key work principles behind them are ultimately deciphered and figured out to offer new insights and guidelines for the design and engineering of the next‐generation stimuli‐responsive luminescent materials for more broad applications.

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Circularly Polarized Luminescence Materials and Their Organic Light‐emitting Device Performances

Zheng

2024

Chiral Luminescence

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An Intelligent AIEgen with Nonmonotonic Multiresponses to Multistimuli

Cited by 24 publications

References 0 publications

How to Manipulate Through-Space Conjugation and Clusteroluminescence of Simple AIEgens with Isolated Phenyl Rings

How to Manipulate Through-Space Conjugation and Clusteroluminescence of Simple AIEgens with Isolated Phenyl Rings

Stimuli‐Responsive AIEgens

Circularly Polarized Luminescence Materials and Their Organic Light‐emitting Device Performances

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