Rational Design of Covalent Bond Engineered Encapsulation Structure toward Efficient, Long‐Lived Multicolored Phosphorescent Carbon Dots

Zhang, Yongqiang; Li, Manyu; Lu, Siyu

doi:10.1002/smll.202206080

Cited by 47 publications

(46 citation statements)

References 47 publications

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“…The IR spectra and XPS spectra of CPDs@SiO 2 (Figure S1C,E,F, see the SI) further demonstrated that CPDs were immobilized in silica by Si-O-C obtained through the reaction between Si-OH and C-OH. Based on the above results, the possible structure formation of CPDs@SiO 2 is presented in Figure F, and we proposed that CPDs and SiO 2 were connected by covalent interactions to effectively inhibit non-radiative recombination. , …”

Section: Resultsmentioning

confidence: 84%

Identification and Quantification of 5-Methylcytosine and 5-Hydroxymethylcytosine on Random DNA Sequences by a Nanoconfined Electrochemiluminescence Platform

et al. 2023

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5-Methylcytosine (5mC) and 5-hydroxymethylcytosine (5hmC) are two of the most abundant epigenetic marks in mammalian genomes, and it has been proven that these dual epigenetic marks give a more accurate prediction of recurrence and survival in cancer than the individual mark. However, due to the similar structure and low expression of 5mC and 5hmC, it is challenging to distinguish and quantify the two methylation modifications. Herein, we employed the ten-eleven translocation family dioxygenases (TET) to convert 5mC to 5hmC via a specific labeling process, which realized the identification of the two marks based on a nanoconfined electrochemiluminescence (ECL) platform combined with the amplification strategy of a recombinase polymerase amplification (RPA)-assisted CRISPR/Cas13a system. Benefiting from the TET-mediated conversion strategy, a highly consistent labeling pathway was developed for identifying dual epigenetic marks on random sequence, which reduced the system error effectively. The ECL platform was established via preparing a carbonized polymer dot embedded SiO2 nanonetwork (CPDs@SiO2), which exhibited higher ECL efficiencies and more stable ECL performance compared to those of the scattered emitters due to the nanoconfinement-enhanced ECL effect. The proposed bioanalysis strategy could be employed for the identification and quantification of 5mC and 5hmC in the range from 100 aM to 100 pM, respectively, which provides a promising tool for early diagnosis of diseases associated with abnormal methylation.

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Section: Resultsmentioning

confidence: 84%

Identification and Quantification of 5-Methylcytosine and 5-Hydroxymethylcytosine on Random DNA Sequences by a Nanoconfined Electrochemiluminescence Platform

et al. 2023

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“…Notably, the red phosphorescence efficiency reached as high as 9.6%. [100] Furthermore, by embedding different CDs into the same matrix, the phosphorescence color can also be tuned. Hu et al embedded five different CDs into the boric acid matrix to achieve full-color phosphorescent emission, and the formed glass state can effectively protect the triplet exciton of CDs.…”

Section: Monochromatic Luminescencementioning

confidence: 99%

“…Carbon dots (CDs), a kind of spherical or quasi-spherical particles with at least one dimension diameter less than 10 nm, [1] and two typical kinds of lattice spacing of 0.21 and 0.34 nm corresponding to (100) and (002) facets of graphic, respectively. It is sometimes named carbon nanodots (CNDs) or carbon quantum dots (CQDs), and various functional groups, such as carboxyl, amide, and hydroxyl groups, are present on their surface.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances of Carbon Dots with Afterglow Emission

Shi

et al. 2023

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Carbon dots (CDs) have gradually become a new generation of nano‐luminescent materials, which have received extensive attention due to excellent optical properties, wide source of raw materials, low toxicity, and good biocompatibility. In recent years, there are many reports on the luminescent phenomenon of CDs, and great progress has been achieved. However,there are rarely systematic summaries on CDs with persistent luminescence. Here, a summary of the recent progress on persistent luminescent CDs, including luminous mechanism, synthetic strategies, property regulation, and potential applications, is given. First, a brief introduction is given to the development of CDs luminescent materials. Then, the luminous mechanism of afterglow CDs from room temperature phosphorescence (RTP), delayed fluorescence (DF), and long persistent luminescence (LPL) is discussed. Next, the constructed methods of luminescent CDs materials are summarized from two aspects, including matrix‐free self‐protected and matrix‐protected CDs. Moreover, the regulation of afterglow properties from color, lifetime, and efficiency is presented. Afterwards, the potential applications of CDs, such as anti‐counterfeiting, information encryption, sensing, bio‐imaging, multicolor display, LED devices, etc., are reviewed. Finally, an outlook on the development of CDs materials and applications is proposed.

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“…Lu's group used multicolor CPD composites to create a 3D digital storage and encryption system. [ 130 ] One signal was observed when UV irradiation was switched on, while two signals were observed when UV irradiation was switched off. Three additional information signals were observed when a 600 nm cut‐off filter was added (Figure 8B).…”

Section: Applications Of Rtp Cpd Materialsmentioning

confidence: 99%

Polymer–Structure‐Induced Room‐Temperature Phosphorescence of Carbon Dot Materials

2023

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As emerging carbon‐based nanomaterials, carbon dots (CDs) are widely studied with regard to their luminescent properties. CDs obtained by the bottom‐up method exhibit polymeric characteristics after crosslinking, polymerization, and incomplete carbonization processes, herein referred to as carbonized polymer dots (CPDs). In recent years, large progress has been achieved on the room‐temperature phosphorescence (RTP) properties of CPDs. The developments and synthesis strategies for RTP CPD materials are reviewed. However, less attention has been devoted to the influence of polymeric structures on RTP of CPD materials. Polymer structures are a common feature of CPD materials. The extensive polymer structures are the key factors facilitating the RTP of CPD materials. Herein, the effects of the polymer structures on the RTP emission of self‐protective CPD and matrix‐assisted CPD materials are discussed. It is considered that the polymer structures can effectively immobilize subluminophores and protect triplet excited states to facilitate the RTP emission of CPD materials. The crosslink‐enhanced emission (CEE) effect is proposed to further explain the RTP emission of CPD materials, which can provide an effective strategy to immobilize CPDs. Benefiting from CEE effect, efficient RTP can be achieved for CPD materials. The applications of CPD materials are then briefly summarized.

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Rational Design of Covalent Bond Engineered Encapsulation Structure toward Efficient, Long‐Lived Multicolored Phosphorescent Carbon Dots

Cited by 47 publications

References 47 publications

Identification and Quantification of 5-Methylcytosine and 5-Hydroxymethylcytosine on Random DNA Sequences by a Nanoconfined Electrochemiluminescence Platform

Identification and Quantification of 5-Methylcytosine and 5-Hydroxymethylcytosine on Random DNA Sequences by a Nanoconfined Electrochemiluminescence Platform

Recent Advances of Carbon Dots with Afterglow Emission

Polymer–Structure‐Induced Room‐Temperature Phosphorescence of Carbon Dot Materials

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