Construction and multifunctional applications of carbon dots/PVA nanofibers with phosphorescence and thermally activated delayed fluorescence

He, Jiangling; He, Youling; Chen, Yonghao; Zhang, Xuejie; Hu, Chaofan; Zhuang, Jianle; Lei, Bingfu; Liu, Yingliang

doi:10.1016/j.cej.2018.04.110

Cited by 107 publications

(77 citation statements)

References 54 publications

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“…used electrospinning technology to successfully prepare CD‐based composite films with both RTP and TADF property. [ 134 ] SEM images demonstrated ordered mesoporous structure was formed in the obtained nanofibers during the electrospinning process. Further characterizations confirmed that the mesoporous structure could effectively stabilize the CDs’ triplet state and enable the RISC process.…”

Section: Research Opportunities For High Performance Cd‐based Electromentioning

confidence: 99%

Fluorescent Carbon Dots: Fantastic Electroluminescent Materials for Light‐Emitting Diodes

2021

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Fluorescent carbon dots (CDs) have emerged as fantastic luminescent nanomaterials with significant potentials on account of their unique photoluminescence properties, high stability, and low toxicity. The application of CDs in electroluminescent light‐emitting diodes (LEDs) have aroused much interest in recent years. Herein, the state‐of‐the‐art advances of CD‐based electroluminescent LEDs are summarized, in which CDs act as active emission layer and interface transport layer materials is discussed and highlighted. Besides, the device structure of CD‐based LEDs and preparation methods of CDs are also introduced. Furthermore, the opportunities and challenges for achieving high performance CD‐based electroluminescent LED devices are presented. This review article is expected to stimulate more unprecedented achievements derived from CDs and CD‐based electroluminescent LEDs, thus further promoting their practical applications in future solid‐state lighting and flat‐panel displays.

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Section: Research Opportunities For High Performance Cd‐based Electromentioning

confidence: 99%

Fluorescent Carbon Dots: Fantastic Electroluminescent Materials for Light‐Emitting Diodes

2021

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“…32,43,84,88 It should be noted that, however, in order to produce room temperature afterglow from CDs, matrices have usually been utilized to immobilize the materials and thus to stabilize the produced T 1 species, so as to make radiative transitions possible from the spin-forbidden process (i.e., from T 1 to S 0 ). 31,34,35,39,43,61,62,84,86,87,[89][90][91][92][93][94][95][96][97][98][99][100][101] More interestingly, self-protective CDs (without matrix immobilization) Fig. 1 The schematic illustration of the emissive processes of fluorescence (a), phosphorescence (b), and delayed fluorescence (c).…”

Section: Afterglow Properties Of Cdsmentioning

confidence: 99%

Afterglow of carbon dots: mechanism, strategy and applications

Jiang

Wang

et al. 2020

Mater. Chem. Front.

163

135

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“…Meanwhile, their intensity increased by 21%, 56% and 32%, respectively ( Figure S9 vs. Figure 4a). Similarly, an increased intensity has been observed for CNDs synthesized from ethanediamine precursors if they were embedded into PVA films and fibers [46]. A blue-shift has been observed in a similar system where CNDs synthesized from m-phenylenediamine were embedded into a PVA matrix, and the blue shift was ascribed to the absence of any solvent relaxation [26].…”

Section: Fluorescent Pva Films and Their Multi-emissive Oxygen Sensinmentioning

confidence: 59%

Reversible Oxygen Sensing Based on Multi-Emission Fluorescence Quenching

Armagan

Thiyagarajan

Wei

et al. 2020

Sensors

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Oxygen is ubiquitous in nature and it plays a key role in several biological processes, such as cellular respiration and food deterioration, to name a few. Currently, reversible and non-destructive oxygen sensing is usually performed with sensors produced by photosensitization of phosphorescent organometallic complexes. In contrast, we propose a novel route of optical oxygen sensing by fluorescence-based quenching of oxygen. We hereby developed for the first time a set of multi-emissive purely organic emitters. These were produced through a one-pot hydrothermal synthesis using p-phenylenediamine (PPD) and urea as starting materials. The origin of the multi-emission has been ascribed to the diversity of chemical structures produced as a result of oxidative oligomerization of PPD. A Bandrowski’s base (BB, i.e., trimer of PPD) is reported as the main component at reaction times higher than 8 h. This indication was confirmed by electrospray-ionization quadrupole time-of-flight (ESI-QTOF) and liquid chromatography-mass spectrometry (LC-MS) analysis. Once the emitters are embedded within a high molecular weight poly (vinyl alcohol) matrix, the intensities of all three emission centers exhibit a non-linear quenching provoked by oxygen within the range of 0–8 kPa. The detection limit of the emission centers are 0.89 kPa, 0.67 kPa and 0.75 kPa, respectively. This oxygen-dependent change in fluorescence emission is reversible (up to three tested 0–21% O2 cycles) and reproducible with negligible cross-interference to humidity. The cost-effectiveness, metal-free formulation, cross-referencing between each single emission center and the relevant oxygen range are all appealing features, making these sensors promising for the detection of oxygen, e.g., in food packaged products.

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Construction and multifunctional applications of carbon dots/PVA nanofibers with phosphorescence and thermally activated delayed fluorescence

Cited by 107 publications

References 54 publications

Fluorescent Carbon Dots: Fantastic Electroluminescent Materials for Light‐Emitting Diodes

Fluorescent Carbon Dots: Fantastic Electroluminescent Materials for Light‐Emitting Diodes

Afterglow of carbon dots: mechanism, strategy and applications

Reversible Oxygen Sensing Based on Multi-Emission Fluorescence Quenching

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