Solid‐state Fluorescence from Carbon Dots Widely Tunable from Blue to Deep Red through Surface Ligand Modulation

Ai, Li; Song, Ziqi; Nie, Mingjun; Yu, Jingkun; Liu, Fukang; Song, Haoqiang; Zhang, Biao; Waterhouse, Geoffrey I.N.; Lu, Siyu

doi:10.1002/ange.202217822

Cited by 3 publications

(1 citation statement)

References 68 publications

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“…As we know, aggregation‐induced emission (AIE) theory is a sharp sword against the ACQ effect. [ 20 ] To date, CDs based on AIE have been studied as 3D pattern printing, [ 21 ] optical illumination [ 22‐23 ] and anticounterfeiting, [ 11,24 ] nevertheless, research on this novel class of carbon nanomaterials, particularly their applications in optoelectronics, remains at the infancy stage. [ 25 ] As such, developing an effective approach to prepare solid‐state fluorescent CDs and clarify the solid‐state fluorescence mechanism is still very important.…”

Section: Background and Originality Contentmentioning

confidence: 99%

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission^†

Zhao

Nan

et al. 2023

Chin. J. Chem.

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Comprehensive Summary Currently, solid‐state fluorescent carbonized polymer dots (CPDs) have attracted attention increasingly due to their applications for optoelectronic display. However, designing CPDs possessing solid‐state fluorescence and clarifying the fluorescence mechanism remain challenging. Herein, we initially synthesized a novel type of polythiophene derivatives CPDs, poly‐4,4’‐(thiophene‐3,4‐diyl)dibenzoic acid carbonized polymer dots (PDBA‐CPDs) with solid‐state fluorescence. Subsequently, the structural and optical characterization revealed that the solid‐state fluorescence originated from the aggregation induced emission of the CPDs. In brief, in aggregation state, the remaining polymer structure groups on the surface of the CPDs overlapped and weakened the non‐radiative transition, enhancing solid‐state fluorescence emission. Thirdly, three polythiophene‐derived CPDs were designed to further demonstrate the aggregation induced solid‐state fluorescence mechanism. Finally, owing to their unique properties of solid‐state fluorescence, the white LEDs (light emitting diodes) were fabricated with high color rendering index (CRI) of 82.7 and CIE coordinates of (0.37, 0.39) using commercial 460 nm chip. This work facilitates the development of CPDs’ solid‐state fluorescence mechanisms and advances the application of CPDs in the field of optoelectronics.

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Section: Background and Originality Contentmentioning

confidence: 99%

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission^†

Zhao

Nan

et al. 2023

Chin. J. Chem.

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Multicolor Afterglow from Carbon Dots: Preparation and Mechanism

Ran,

Liu,

Zhuang

et al. 2023

Small Methods

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Carbon dots (CDs), as emerging long afterglow luminescent material, have attracted the attention of researchers and become one of the hot topics in long afterglow materials. In recent years, researchers have obtained a series of CDs‐based long afterglow materials with different properties utilizing matrix‐assisted and self‐protective methods. To meet diverse application needs, the development of multicolor CDs‐based long afterglow materials is a focus and challenge in this field. Most of the previously reported CDs‐based long afterglow materials generally emit blue or green afterglow. Recently, some multicolor systems have been discovered, and the emission range can extend from ultraviolet to near‐infrared. However, there is a lack of systematic and in‐depth analysis regarding the preparation strategy and luminescence mechanism of multicolor afterglow from CDs‐based long afterglow materials. Based on this, this review summarizes the preparation strategies of multicolor afterglow from raw materials and reaction parameters. Then, the luminescence mechanisms of multicolor afterglow are analyzed from seven factors, including carbonization degree, surface state, aggregation degree, temperature dependence, excitation dependence, multi‐emission center, and energy transfer. Moreover, the applications of multicolor afterglow from CDs‐based long afterglow materials are introduced. Finally, the problems and challenges in this field are discussed, and the future development directions are analyzed.

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Impact of nitrogen doping on the polarization properties of carbon quantum dots

Chen,

Liu,

et al. 2024

Optical Materials

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Solid‐state Fluorescence from Carbon Dots Widely Tunable from Blue to Deep Red through Surface Ligand Modulation

Cited by 3 publications

References 68 publications

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission^†

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission^†

Multicolor Afterglow from Carbon Dots: Preparation and Mechanism

Impact of nitrogen doping on the polarization properties of carbon quantum dots

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Solid‐state Fluorescence from Carbon Dots Widely Tunable from Blue to Deep Red through Surface Ligand Modulation

Cited by 3 publications

References 68 publications

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission†

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission†

Multicolor Afterglow from Carbon Dots: Preparation and Mechanism

Impact of nitrogen doping on the polarization properties of carbon quantum dots

Contact Info

Product

Resources

About

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission^†

Polythiophene Derivatives Carbonized Polymer Dots: Aggregation Induced Solid‐State Fluorescence Emission^†