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学者姓名：吴宇鑫
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Abstract ：
To improve the comprehensive properties of polybutylene furandicarboxylate (PBF), 2,5-furandicarboxylic acid (2,5-FDCA), and aliphatic chain diol 1,8-octanediol and 1,4-butanediol were used as monomers to synthesize a series of bio-based polybutylene glycol-octanediol 2,5-furandicarboxylate (PBOF). The results showed that the chemical composition of PBOF could be controlled through the molar ratio of monomers. Compared with PBF, as the proportion of octanediol segments gradually increased, PBOF could gradually transform from semi-crystalline thermoplastic to amorphous form, and the glass transition temperature (Tg) gradually decreased. The crystallization ability reduced but a part of the crystal area was still retained. The copolyesters still has a decomposition temperature above 370 degrees C, indicating excellent thermal stability. The introduction of the octanediol segment significantly improved the tensile mechanical properties and flexibility of the POBF copolyester. These meet the requirements for the preparation of bio-based engineering plastics. The water absorption rate of PBOF showed that it may have certain degradable potential. PBOF copolyesters have potential application prospects in bio-based medical plastics and biodegradable packaging polymer materials after copolymerization modification. A series of high-value bio-based copoyesters were prepared from a kind of sustainable raw material, 2,5-furandicarboxylic acid. image
Keyword ：
bio-based polymers bio-based polymers biomass utilization biomass utilization copolyesters copolyesters furan dicarboxylic acid furan dicarboxylic acid polycondensation polycondensation
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| GB/T 7714 | Xu, Jia , Zou, Haitao , Jin, Yanqiao et al. Preparation and performance exploration of 2,5-furandicarboxylic acid-based copolyester bioplastics: Controlling thermal properties, tensile properties, and surface hydrophilicity through composition [J]. | JOURNAL OF APPLIED POLYMER SCIENCE , 2024 , 141 (33) . |
| MLA | Xu, Jia et al. "Preparation and performance exploration of 2,5-furandicarboxylic acid-based copolyester bioplastics: Controlling thermal properties, tensile properties, and surface hydrophilicity through composition" . | JOURNAL OF APPLIED POLYMER SCIENCE 141 . 33 (2024) . |
| APA | Xu, Jia , Zou, Haitao , Jin, Yanqiao , Zheng, Qixi , Lei, Fanghui , Wu, Yuxin . Preparation and performance exploration of 2,5-furandicarboxylic acid-based copolyester bioplastics: Controlling thermal properties, tensile properties, and surface hydrophilicity through composition . | JOURNAL OF APPLIED POLYMER SCIENCE , 2024 , 141 (33) . |
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Abstract ：
A nitrogen-doped carbon quantum dots (N-CQDs)-based "on-off" fluorescent nanosensor was profitably synthe-sized through one-pot hydrothermal treatment of citric acid and o-phenylenediamine for the determination of Fe3+ and imaging towards cancerous cells in vitro. The synthesized N-CQDs exhibited excellent photo-luminescence and favorable biocompatibility. The excitation-dependent fluorescence emission spectra were observed and the maximum emission wavelength was 483 nm at the excitation wavelength of 420 nm. The fluorescent N-CQDs had a selective and sensitive response to Fe3+ with a limit of detection of 0.177 mu M and an allowable detection range of 0-110 mu M. The sensor was applied for the determination of Fe3+ ions in tap water with satisfactory results. Moreover, the N-CQDs provide a practical and promising method for cellular imaging due to their excellent fluorescence potency and negligible cytotoxicity.
Keyword ：
Carbon quantum dots Carbon quantum dots Cell imaging Cell imaging Fe3+ions detection Fe3+ions detection Fluorescence probe Fluorescence probe
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| GB/T 7714 | Lai, Chunmei , Lin, Simin , Xiong, Lei et al. High quantum yield nitrogen-doped carbon quantum dots: Green synthesis and application as "on-off" fluorescent sensors for specific Fe3+ions detection and cell imaging [J]. | DIAMOND AND RELATED MATERIALS , 2023 , 133 . |
| MLA | Lai, Chunmei et al. "High quantum yield nitrogen-doped carbon quantum dots: Green synthesis and application as "on-off" fluorescent sensors for specific Fe3+ions detection and cell imaging" . | DIAMOND AND RELATED MATERIALS 133 (2023) . |
| APA | Lai, Chunmei , Lin, Simin , Xiong, Lei , Wu, Yuxin , Liu, Chao , Jin, Yanqiao . High quantum yield nitrogen-doped carbon quantum dots: Green synthesis and application as "on-off" fluorescent sensors for specific Fe3+ions detection and cell imaging . | DIAMOND AND RELATED MATERIALS , 2023 , 133 . |
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Synthesis of lignin-based carbon dots (LCDs) with high quantum yield (QY), stable fluorescence properties and biocompatibility has been a challenge. Here, we propose an improved two-step strategy for producing highquality LCDs from enzymatic hydrolysis lignin (EHL). The p-aminobenzenesulfonic acid used in the strategy not only provides nitrogen and sulfur elements, but also tailors the disordered three-dimensional structure of EHL. The successful co-doping of N and S elements favors the reduction of the optical energy bandgap (Eg), resulting in a high QY of 45.05% for LCDs. The LCDs exhibited superior selectivity and sensitivity for Fe3+ with a limit of detection (LOD) of 0.15 & mu;M when Fe3+ concentration was 50-500 & mu;M. In addition, LCDs demonstrated significant fluorescence in HepG2 cells and HepG2 cells loaded with LCDs at a concentration of 80 & mu;g/mL showed good viability, suggesting that they are suitable for in vivo applications. The luminescent centers of LCDs change during pH regulation and thus show a special visual response to pH changes, making them have great potential for detecting metabolism in living cells. This work provides a novel and low-cost method for fabricating sustainable fluorescent probes for chemical sensing and bioimaging.
Keyword ：
Bioimaging Bioimaging Carbon dots Carbon dots Enzymatic hydrolysis lignin Enzymatic hydrolysis lignin Fe 3+detection Fe 3+detection
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| GB/T 7714 | Lin, Simin , Lai, Chunmei , Huang, Zejie et al. Sustainable synthesis of lignin-derived carbon dots with visible pH response for Fe3+detection and bioimaging [J]. | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2023 , 302 . |
| MLA | Lin, Simin et al. "Sustainable synthesis of lignin-derived carbon dots with visible pH response for Fe3+detection and bioimaging" . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 302 (2023) . |
| APA | Lin, Simin , Lai, Chunmei , Huang, Zejie , Liu, Wei , Xiong, Lei , Wu, Yuxin et al. Sustainable synthesis of lignin-derived carbon dots with visible pH response for Fe3+detection and bioimaging . | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY , 2023 , 302 . |
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