Solvent-controlled synthesis strategy of multicolor emission carbon dots and its applications in sensing and light-emitting devices

Sun, Zhonghui; Yan, Fanyong; Xu, Jing; Zhang, Hao; Chen, Li

doi:10.1007/s12274-021-3495-8

Cited by 66 publications

(34 citation statements)

References 51 publications

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“…22 2 domains. 28,32,33 This result is consistent with the TEM results of CDs. The X-ray diffraction (XRD) patterns of all CDs exhibit (002) diffraction peaks of graphite at 2y = 25.51 (Fig.…”

Section: Morphology and Structure Of Cdssupporting

confidence: 90%

“…Previous studies have shown that the properties of solvents including polarity, boiling point and solubility should have significant influences on the chemical structure and morphology of the as-prepared CDs, leading to emission at different wavelengths. 20,33,37 In order to investigate the formation mechanism of CDs, the solubility behaviors of the precursors in solvents are investigated. As shown in Fig.…”

Section: Formation Mechanism Of Cdsmentioning

confidence: 99%

“…The larger size of the sp 2 conjugation domain can decrease the HOMOÀLUMO level of CDs and exhibit a redshift. 33 Due to the strong electron negativity of O atoms, the O-related functional groups can lower the LUMO energy level. 11,16 A strong N-doping effect can contribute to the formation of deep levels in the bandgap and decrease the energy of transitions (Fig.…”

Section: Formation Mechanism Of Cdsmentioning

confidence: 99%

See 2 more Smart Citations

Preparation of multicolor-emissive carbon dots with high quantum yields and their epoxy composites for fluorescence anti-counterfeiting and light-emitting devices

et al. 2022

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Section: Morphology and Structure Of Cdssupporting

confidence: 90%

Section: Formation Mechanism Of Cdsmentioning

confidence: 99%

Section: Formation Mechanism Of Cdsmentioning

confidence: 99%

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Preparation of multicolor-emissive carbon dots with high quantum yields and their epoxy composites for fluorescence anti-counterfeiting and light-emitting devices

et al. 2022

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“…Specially, red fluorescence CDs (R-CDs) possess unique advantages for bioimaging and biosensing application, which can effectively eliminate the interference of background fluorescence from biological tissue [ 22 ]. However, current R-CDs still suffer from low photoluminescence efficiency and product yield, and the synthesis of them also usually cannot remove their dependence on organic solvent and inorganic acid [ 23 , 24 , 25 , 26 ]. The solid-phase synthesis method was advocated for in the preparation of CDs to overcome the deficiencies of traditional solvothermal and microwave methods because of its simplicity, solvent-free, easy operation and repetition.…”

Section: Introductionmentioning

confidence: 99%

Solid-Phase Synthesis of Red Fluorescent Carbon Dots for the Dual-Mode Detection of Hexavalent Chromium and Cell Imaging

Wang

Wei

et al. 2022

Biosensors

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The excellent optical properties and biocompatibility of red fluorescence carbon dots (R-CDs) provide a new approach for the effective analysis of hexavalent chromium (Cr(VI) in environmental and biological samples. However, the application of R-CDs is still limited by low yield and unfriendly synthesis route. In this study, we developed a new type of R-CDs based on a simple and green solid-phase preparation strategy. The synthesized R-CDs can emit bright red fluorescence with an emission wavelength of 625 nm and also have an obvious visible light absorption capacity. Furthermore, the absorption and fluorescence signals of the R-CDs aqueous solution are sensitive to Cr(VI), which is reflected in color change and fluorescence quenching. Based on that, a scanometric and fluorescent dual-mode analysis system for the rapid and accurate detection of Cr(VI) was established well within the limit of detection at 80 nM and 9.1 nM, respectively. The proposed methods also possess high specificity and were applied for the detection of Cr(VI) in real water samples. More importantly, the synthesized R-CDs with good biocompatibility were further successfully applied for visualizing intracellular Cr(VI) in Hela cells.

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“…Fluorescent films composed of π-conjugated materials-based fluorescent sensors and membranous materials are promising sensor technology due to their real-time detection, easy fabrication, noninvasiveness detection, and mechanical stability and flexibility (Guan et al, 2015;Miao et al, 2016). In recent years, they have been widely used in detecting residual pesticides (Peng et al, 2021), enzymes (Zhao et al, 2017a;Zhao et al, 2017b), pollutants (Lee et al, 2019;Zhao et al, 2020b;Sun et al, 2021), explosives (Zhou et al, 2014;Sun et al, 2015;Li et al, 2018;Hao et al, 2021), metal ions (Chen et al, 2020), gases (Moscoso et al, 2020), and temperature and humidity (Jiang et al, 2020;Li et al, 2020), which greatly expanded the applications of fluorescence sensors. Generally, high selectivity and sensitivity are the key characteristics of a successful membranous fluorescent sensor (Sun et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Design and Synthesis of AIE-Based Small-Molecule and Nanofibrous Film for Fluorescent Sensing Application

Zhang

et al. 2021

Front. Chem.

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Fluorescent sensors that respond to environmental conditions (temperature, pressure, and pH) have attracted widespread attention in recent years. Generally, traditional solid-state fluorescent materials tend to suffer from aggregation-induced quenching (ACQ) and difficulty of film forming, limiting their extensive applications. Therefore, researchers are focusing more and more attention on fluorescent sensors with aggregation-induced emission (AIE) effects. Herein, the article reports an AIE molecule (TPEBZMZ) containing tetraphenylethylene (TPE) and benzimidazole fragments. The fluorescence properties of TPEBZMZ in solution and aggregation states have been investigated, and the luminescence performance and aggregation structures of solid-state TPEBZMZ after force and acid treatments have been explored. The results show obvious AIE and fluorescent sensing properties of TPEBZMZ, presenting force- and acid-induced discolorations. Moreover, the TPEBZMZ-based fluorescent nanofibrous film is fabricated by electrospinning the solution of TPEBZMZ blended with polylactic acid (PLA), which shows a good nanofiber film structure and exhibits reversible acid-induced discoloration property, even with only 0.5 wt% TPEBZMZ. This work provides a simple strategy to achieve stimulus-responsive fluorescent film.

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Solvent-controlled synthesis strategy of multicolor emission carbon dots and its applications in sensing and light-emitting devices

Cited by 66 publications

References 51 publications

Preparation of multicolor-emissive carbon dots with high quantum yields and their epoxy composites for fluorescence anti-counterfeiting and light-emitting devices

Preparation of multicolor-emissive carbon dots with high quantum yields and their epoxy composites for fluorescence anti-counterfeiting and light-emitting devices

Solid-Phase Synthesis of Red Fluorescent Carbon Dots for the Dual-Mode Detection of Hexavalent Chromium and Cell Imaging

Design and Synthesis of AIE-Based Small-Molecule and Nanofibrous Film for Fluorescent Sensing Application

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