Two-component design strategy: TADF-Type organic afterglow for time-gated chemodosimeters

Wang, Guangming; Li, Jiuyang; Li, Xun; Wang, Xuepu; Sun, Yan; Liu, Jiahui; Zhang, Kaka

doi:10.1016/j.cej.2021.134197

Cited by 30 publications

(45 citation statements)

References 83 publications

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“…Zhang reported a TADF-type organic afterglow system by doping pyrylium salts into phenyl benzoate matrices which can serve as time-gated chemodosimeter specifically towards amine-containing compounds since the chemical reaction between pyrylium salts and amines to form pyrydium salts can cause afterglow quenching of the two-component system (Figure 18). [99] For fluorescent chemodosimeter technique, when the target substances are contaminated by fluorescence compounds either unintentionally or intentionally, the fluoresence analyses would give inaccurate or erroneous results. In such situation, complicated sample pre-treatments are usually required, which would make the procedures time-consuming and expensive.…”

Section: Stimuli-responsive Afterglow Materialsmentioning

confidence: 99%

Manipulation of Triplet Excited States in Two‐Component Systems for High‐Performance Organic Afterglow Materials

Wang

Chen

et al. 2022

Chemistry A European J

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The past several years have witnessed the tremendous development of novel chemical structures, new design strategies and intriguing applications in the field of room‐temperature phosphorescence (RTP) and organic afterglow materials. This Review article focuses on recent advancements of high‐performance organic afterglow materials obtained by two‐component design strategies such as a dopant‐matrix, donor–acceptor, sensitization, and energy‐transfer strategies. Based on some cutting‐edge studies, organic afterglow efficiency has been largely improved, exceeding 90 % in several cases. Organic afterglow durations reach tens of seconds in phosphorescence systems and hours in donor–acceptor systems. Organic afterglow brightness outcompetes some inorganic afterglow materials in the first several seconds after ceasing excitation source. Organic afterglow colors cover the whole visible regions and extend to near‐infrared regions with respectful afterglow efficiency. On the basis of these achievements, researchers demonstrate promising applications of organic afterglow materials in diverse fields, which has also been reviewed.

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Section: Stimuli-responsive Afterglow Materialsmentioning

confidence: 99%

Manipulation of Triplet Excited States in Two‐Component Systems for High‐Performance Organic Afterglow Materials

Wang

Chen

et al. 2022

Chemistry A European J

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“…Dopant‐matrix design strategies developed by us and others have shown that organic matrices can modulate the triplet excited state properties of luminescent dopants for the fabrication of high‐performance organic RTP materials. [ 14,22‐38 ] Glassy or crystalline matrices have been found to provide rigid microenvironments for luminescent dopants to inhibit nonradiative decay of dopants’ triplet excited states. [ 22‐23 ] Hydrogen bonding between matrices and dopants can also significantly reduce nonradiative decay of the triplet excited states of luminescent dopants.…”

Section: Background and Originality Contentmentioning

confidence: 99%

Cascade Synthesis of Luminescent Difluoroboron Diketonate Compounds forRoom‐TemperatureOrganic Afterglow Materials

Wang

Zhao

et al. 2022

Chin. J. Chem.

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Difluoroboron β-diketonate (BF 2 bdk) compounds represent an important class of luminescent materials, whereas their synthesis requires multiple steps, which restrict their application in diverse fields. Here we report a cascade reaction to prepare BF 2 bdk from aromatic ketones, carboxylic acids, trifluoroacetic anhydride and boron trifluoride diethyl etherate. The cascade reaction is very simple and straightforward to produce BF 2 bdk with desired functional groups in reasonable isolation yields. Further, when some specific BF 2 bdk compounds are used as luminescent dopants, organic room-temperature phosphorescence with lifetimes > 1.0 s and intense afterglow under ambient conditions can be achieved with the assistance by suitable organic matrices. The dopant-matrix materials exhibit excellent processability into desired patterns and large-area panels, and function as efficient donors of excited state energy transfer for the fabrication of red afterglow materials. The materials can be processed into aqueous afterglow dispersion that displays unique property of escaping the interference from strong fluorescence background.

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“…41 A very recent study in our laboratory showed that organic afterglow systems based on pyrylium salts can undergo a drastic afterglow change upon exposing to amine-containing substrates. 42 The time-gated chemodosimeter functions specifically towards amine-containing substrates have been found to escape the interference of background fluorescence. Despite these advancements, the types of external stimuli that can be recognized by organic afterglow materials are still quite limited to date.…”

Section: Introductionmentioning

confidence: 99%

Achieving redox-responsive organic afterglow materials via a dopant–matrix design strategy

et al. 2022

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Two-component design strategy: TADF-Type organic afterglow for time-gated chemodosimeters

Cited by 30 publications

References 83 publications

Manipulation of Triplet Excited States in Two‐Component Systems for High‐Performance Organic Afterglow Materials

Manipulation of Triplet Excited States in Two‐Component Systems for High‐Performance Organic Afterglow Materials

Cascade Synthesis of Luminescent Difluoroboron Diketonate Compounds forRoom‐TemperatureOrganic Afterglow Materials

Achieving redox-responsive organic afterglow materials via a dopant–matrix design strategy

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