Article
Chemistry, Physical
Yamei Lin, Fei Wang, Enxiang Ren, Fuying Zhu, Qiang Zhang, Guo-Ping Lu
Summary: The development of novel iron heterogeneous catalysts for organic synthesis is attractive and significant for both academic and industrial applications. A carbon-based iron heterogeneous catalyst (Fe@NSiC) comprising of different iron species including iron atomic single sites (FeNxSiy), iron silicate, and iron nanoparticles (NPs) has been developed. This catalyst exhibits high performance on the solvent-free synthesis of pyrroles from nitroarenes and 2,5-hexanedione via cascade reaction using HCOOH/DBU as the reductant, and a set of pyrroles reflecting potential interest from the pharmaceutical perspective are obtained with moderate to excellent yields in this chemistry.
JOURNAL OF CATALYSIS
(2022)
Article
Spectroscopy
Jinzhi Lv, Wenli Yang, Yanming Miao
Summary: Regulating photosynthesis rates through the use of low-toxicity and biocompatible optical nanomaterials called carbon dots (CDs) can enhance crop yields. In this study, nitrogen-doped CDs (CNDs) were synthesized with a fluorescent quantum yield of 0.36 via a one-step hydrothermal method. These CNDs can convert some ultraviolet light into blue light, which is used in photosynthesis and overlaps with the optical absorption spectrum of chloroplasts in the blue light zone. This enhances photoelectron transport rate, reduces ultraviolet light stress on wheat seedlings, and improves various photosynthetic indices and biomass. Cytotoxicity experiments demonstrate that CNDs within a certain concentration range have minimal impact on cell survival.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Siming Ren, Mingjun Cui, Xinyu Chen, Shixiang Mei, Yujie Qiang
Summary: Carbon steel is widely used in various industries, and its corrosion is a major concern. Carbon dots (CDs), especially heteroatom-doped CDs, have been developed as green corrosion inhibitors. A study compared the corrosion inhibition efficiency and mechanisms of nitrogen-doped and nitrogen, sulfur codoped CDs. The results showed that both types of CDs can effectively restrain the corrosion of carbon steel, with the codoped CDs exhibiting higher inhibition performance. Molecular dynamics simulation revealed the strong interaction between the codoped CDs and the carbon steel substrate, which contributes to the superior corrosion inhibition.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Environmental Sciences
Wei Wang, Shaoqing Li, Pengyuan Yin, Jiaxiong Li, Yi Tang, Min Yang
Summary: In this study, N, S-codoped fluorescent carbon dots were rapidly fabricated and used for the detection of tetracyclines. The synthesis parameters were optimized using response surface methodology, and the as-synthesized NSCDs exhibited superior photoluminescence stability and high quantum yield. The fluorescence intensity of the NSCDs could be effectively quenched by tetracyclines through the inner filter effect and photoinduced electron transfer.
Article
Chemistry, Multidisciplinary
Yafeng Deng, Jun Qian, Yihua Zhou, Yifan Niu
Summary: The blue-green fluorescent carbon dots (CDs) synthesized in this study showed high sensitivity and selectivity for detecting nitrites, with a low detection limit of 0.03 mM in water. The sulfuric acid group and aromatic primary ammonia groups on the surfaces of CDs interacted with nitrites to cause fluorescence quenching, providing a new way of monitoring nitrites in target samples.
Article
Biochemistry & Molecular Biology
Lidong Yu, Xueting Li, Mingyue He, Qingchen Wang, Ce Chen, Fangshun Li, Bingsheng Li, Li Li
Summary: Iron overload osteoporosis is a common condition among postmenopausal women and individuals requiring repeated blood transfusions. It is characterized by an increase in osteoclast activity and a decrease in osteoblast activity, resulting in the development of osteoporosis. Conventional treatment options such as calcium supplementation and iron chelators are not effective in improving the condition. The present study focuses on the antioxidant aspect of osteoporosis treatment.
Article
Nanoscience & Nanotechnology
Lidong Yu, Mingyue He, Sihan Liu, Xinyue Dou, Li Li, Ning Gu, Bingsheng Li, Zhiguo Liu, Guixue Wang, Jianglin Fan
Summary: This paper reports the Fe3+ chelation and therapy of iron overload nonalcoholic fatty liver disease (NAFLD) using fluorescent egg white-based carbon dots (EWCDs) obtained through microwave-assisted pyrolysis method. The high-sensitivity sensor EWCDs show a high correlation between fluorescence emission and Fe3+ concentration in low concentration ranges, with high biocompatibility and specific binding of Fe3+ both in vivo and in vitro. As a novel nano-iron-chelator, EWCDs can successfully attenuate the production of lethal reactive oxygen species, prevent hepatocyte apoptosis, regulate fatty acid metabolism, and alleviate inflammation. Ultimately, they alleviate NAFLD induced by iron overload in zebrafish.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jiahui Shi, Juan Ning, Guizhen Hu, Wenzheng Guo, Yanmei Zhou
Summary: In this study, a series of panchromatic carbon dots were synthesized by using hydroxyurea and o-phenylenediamine as precursors and varying the solvents. The pink carbon dots (p-CDs) with a quantum yield of 46% were chosen for cellular research. After modifying the p-CDs with mannose, they could selectively target liver cancer cells and achieve naked-eye discrimination.
APPLIED SURFACE SCIENCE
(2023)
Article
Polymer Science
Gwajeong Jeong, Taewook Kim, Seong Dae Park, Myong Jae Yoo, Chan Ho Park, Hyunseung Yang
Summary: This study develops organic gel sensors based on NS-CDs that display color changes in response to different solvents, offering strong solvatochromic performance and reusability, providing valuable insights for designing real-time organic solvent sensing platforms.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Shuo Li, Zheng Luo, Hanyu Tu, Hao Zhang, Weina Deng, Guoqiang Zou, Hongshuai Hou, Xiaobo Ji
Summary: The use of nitrogen and sulfur-codoped carbon dots (N,S-CDs) as electrolyte additives to guide homogeneous lithium ion deposition has been proposed to improve the stability and cycling life of lithium metal batteries.
ENERGY STORAGE MATERIALS
(2021)
Article
Agricultural Engineering
Xiaoxu Yang, Shiyao Hou, Tingting Chu, Jiazhi Han, Runsen Li, Yanzhu Guo, Yumei Gong, Haiming Li, Zhiwei Wan
Summary: The study utilized lignin to prepare magnesium and nitrogen-doped carbon quantum dots, achieving high emission quantum yield in green fluorescence. These CQDs can also transition from green to yellow color at pH 5.4, showing potential for detecting pH values in complex environments.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Physical
Weili Teng, Qinqin Zhou, Xuekai Wang, Haibing Che, Yucheng Du, Peng Hu, Hongyi Li, Jinshu Wang
Summary: The study introduced a N,O-codoped hierarchically porous carbon material with abundant dopants and porous structure, exhibiting high specific capacitance and cycling stability. This material shows promise as an electrode material for supercapacitors.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Applied
Yingying Hu, Rentian Guan, Shuai Zhang, Xiaoyu Fan, Wenjing Liu, Keying Zhang, Xiaodong Shao, Xia Li, Qiaoli Yue
Summary: A convenient fluorescence sensor for tetracycline (TC) was constructed using carbon dots (CDs) and polyvinyl alcohol (PVA) hydrogel film, demonstrating higher sensitivity and better selectivity compared to previous methods. The sensor has potential applications in real-time detection of TC in food analysis.
Review
Chemistry, Multidisciplinary
Xueping Song, Siyu Zhao, Ying Xu, Xinrui Chen, Shuangfei Wang, Peitao Zhao, Yunqiao Pu, Arthur J. Ragauskas
Summary: This article summarizes the recent research progress in the preparation of carbon dots from lignocellulosics. It reviews the traditional and new preparation methods, physical and chemical properties, optical properties, and applications of these carbon dots. The challenges of synthesizing lignocellulosic carbon dots are highlighted, and current trends and opportunities are examined, with some suggestions for future research.
Article
Chemistry, Physical
Jinyu Zhang, Cai Jing, Binsong Wang
Summary: In this study, a Si, N-codoped carbon quantum dots (Si, N-CQDs) signal shut-off probe was developed for the fluorescence quenching detection of Cr(VI) without the aid of any biomolecules or labeling materials. Si, N-CQDs exhibited high sensitivity towards Cr(VI) with a wide linear range and a low detection limit.
