Article
Environmental Sciences
Yi Sun, Qingxiang Zhou, Xueying Sheng, Shuanying Li, Yayan Tong, Jinghan Guo, Boyao Zhou, Jingyi Zhao, Menghua Liu, Zhi Li, Yanhui Li, Tongxu Qu, Chunmao Chen
Summary: A fluorescent sensor was constructed using carbon quantum dots with high selectivity and sensitivity towards benzo[a]pyrene, showing great potential for practical application. The sensor exhibited excellent linearity and a low limit of detection, while also being simple, rapid, cost-effective, and stable.
Review
Chemistry, Multidisciplinary
Alejandro Lopez-Beltran, Claudia Iriarte-Mesa, Clarissa Murru, Frank J. Chao-Mujica, Angel Luis Corcho-Valdes, Lisandra Morales-Alvarez, Luis Felipe Desdin-Garcia, Johnny Deschamps, Manuel Antuch
Summary: The review summarizes the pollution caused by heavy metals through natural processes and human activities, and its occurrence in complex media. It aims to provide a systematic summary of the state-of-the-art fluorescent CDs and their sensing applications. The review also addresses the origin of observed selectivity in chemiluminescence sensors, offering explanations for trends and providing guidelines for the design of CDs targeting ions in solution.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Analytical
Myriam Diaz-Alvarez, Antonio Martin-Esteban
Summary: This paper reviews the development of optical sensors using a combination of quantum dots and molecularly imprinted polymers. These sensors overcome the limitations of traditional analytical methods and improve sensor selectivity and sensitivity.
Article
Chemistry, Physical
Yaowen Liu, Junjie Chen, Qianming Wang
Summary: This article mainly introduces a fluorescent framework based on carbon quantum dots, which shows great potential in detecting Fe3+ and ascorbic acid. The emission signal can be suppressed by the addition of Fe3+, but can be substantially recovered by the reduction of trivalent iron ions by ascorbic acid.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Qin Li, Liyun Ding, Yumei Zhang, Tian Wu
Summary: A novel optical fiber biosensor based on carbon quantum dots fluorescent probe was developed for cholesterol sensing. The sensor showed good biocompatibility and selectivity for cholesterol.
IEEE SENSORS JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Manal A. Alossaimi, Heba Elmansi, Mai Alajaji, Ali Altharawi, Abdulmalik S. A. Altamimi, Galal Magdy
Summary: A novel spectrofluorimetric method for determining dacomitinib based on newly synthesized nitrogen-doped carbon quantum dots (N-CQDs) as fluorescent probes is proposed in this study. The method is simple, does not require pretreatment, and showed high sensitivity with a low detection limit of 0.11 μg/mL. The synthesized N-CQDs demonstrated stable spherical shapes, narrow size distribution, and high fluorescence quantum yield (25.3%).
Article
Spectroscopy
Mohamed A. Abdel-Lateef, Marzough Aziz Albalawi, Sameera N. Al-Ghamdi, Wael A. Mahdi, Sultan Alshehri, Mohamed A. El Hamd
Summary: In this study, a novel fluorescence probe was designed to detect the adulteration of curcumin by harmful artificial dye metanil yellow. The probe was synthesized from the conversion of Tannic acid-Eu3+ complex to Eu-carbon dots. The formed Eu-carbon dots exhibited unique fluorescence excitation and emission features, which can be successfully quenched by metanil yellow dye. The proposed method has a low detection limit and good recovery values.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hema Sindhuja George, Hosimin Selvaraj, Andivelu Ilangovan, Karthikeyan Chandrasekaran, Velu Rajesh Kannan, Punniyakotti Parthipan, Bader O. Almutairi, Ranjith Balu
Summary: Heavy metal ions pose a serious threat to the environment and human health, making their detection and removal crucial. This study demonstrates the successful conversion of papaya seeds into water-soluble carbon dots, which show excellent sensitivity and detection capabilities for Fe3+ ions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Juan Yue, Qian Mei, Panyong Wang, Peng Miao, Wen-Fei Dong, Li Li
Summary: The yellow fluorescent carbon dots (CDs) for detecting GSSG through a fluorescence off-on process show linear correlation with GSSG concentration and a detection limit of 0.18mu M. Additionally, the CDs can also be used for fluorescence imaging in living cells and zebrafish.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Zhiming Wang, Cuo Zhou, Shunwei Wu, Chunyan Sun
Summary: Fluorescence analysis technology and ion imprinting technology were combined to prepare a copper ion fluorescence sensor, showing strong fluorescence and high selectivity. The sensor had good linearity with Cu(II) concentration in a linear range and was successfully applied to the determination of traces Cu(II) in real water samples with good recoveries.
Article
Chemistry, Analytical
Alex Pascual-Esco, Julian Alonso-Chamarro, Mar Puyol
Summary: A warning microanalyzer using Carbon Dots as selective optical reagents for the rapid monitoring of different heavy metals in water is presented. The system combines microfluidics with selective fluorescence quenching by heavy metal ions, providing sensitivity, automation, and reproducibility. It can also be used as a toxicity control system by selectively measuring heavy metal ions.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Seyed Mostafa Jafari, Saeed Masoum, Seyed Ali Hosseini Tafreshi
Summary: In this study, ACDs were synthesized from Chlorella vulgaris and utilized as sensors for glucose and hydrogen peroxide detection. The detection limits were found to be 2.84 µM and 975 nM, respectively, based on fluorescence quenching.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Analytical
Xue Sun, Minwen Jiang, Ligang Chen, Na Niu
Summary: A new ratiometric molecularly imprinted fluorescence probe based on biomass carbon quantum dots and europium ions has been developed for sensitive detection of tetracycline, with a linear fluorescence quenching range in milk of 25-2000 nM and a detection limit of 7.9 nM. The probe demonstrates high recoveries and low relative standard deviations, showing improved selectivity in practical applications.
Article
Spectroscopy
Mohamed Ahmed Abdel Hamid, Samar H. Elagamy, Aya Gamal, Fotouh R. Mansour
Summary: A simple and eco-friendly microwave method was used to prepare highly fluorescent nitrogen and sulfur co-doped carbon quantum dots (NS-CQDs) for the determination of ascorbic acid (ASC) in pharmaceutical dosage forms. The NS-CQDs were prepared within one minute using citric acid and L-cysteine. The fluorescence of NS-CQDs was quenched by ferric ions but could be restored by the addition of ASC due to its reducing properties.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Xin Liu, Wei Yu, Xiaowei Mu, Wei Zhang, Xinghua Wang, Qiang Gu
Summary: A rapid and sensitive strategy for sensing dopamine (DA) was proposed based on the fluorescence quenching effects of polydopamine (PDA) on carbon dots (CDs). The green-emission fluorescence CDs were synthesized via a facile one-pot hydrothermal approach. The proposed fluorescence probe exhibits good selectivity and sensitivity to DA in a wide concentration range, making it a potential tool for diagnosing DA-related diseases.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)