Article
Chemistry, Analytical
Jinyun Peng, Xueying Li, Yuxia Liu, Wenfeng Zhuge, Cuizhong Zhang, Yingying Huang
Summary: Developing materials with excellent photoelectric activity is essential for improving the sensitivity of photoelectrochemical sensors. In this study, a convenient method to synthesize phthalocyanine polymer dots has been reported, which were used to develop an ultrasensitive PEC sensor for dopamine detection. The sensor showed increased photocurrent intensity with higher concentrations of dopamine under blue light irradiation.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Roopkumar Sangubotla, Sia Won, Jongsung Kim
Summary: In this study, a boronic acid-functionalized fluorescent sensor was developed to detect neurotransmitters such as dopamine using coffee waste. The sensor showed good sensitivity and accuracy in detecting dopamine concentrations.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yuxin Li, Romana Jarosova, Moriah E. Weese-Myers, Ashley E. Ross
Summary: Graphene-fiber microelectrodes (GFME's) have been synthesized and characterized for subsecond detection of neurochemicals with fast-scan cyclic voltammetry (FSCV) for the first time. These microelectrodes exhibit faster electron transfer kinetics, significantly improved sensitivity, and ease of tunability, making them highly impactful for neurochemical detection.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Xiao-Yue Tang, Yi-Ming Liu, Xiao-Lin Bai, Hao Yuan, Yi-Kao Hu, Xiao-Ping Yu, Xun Liao
Summary: The study developed a novel pretreatment-free method for dopamine detection using carbon dots, which showed good selectivity and accuracy in human serum sample tests. The method has the potential for dopamine detection and live-cell imaging due to its simplicity, cost-effectiveness, and sensitivity.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Manivannan Madhu, A. Santhana Krishna Kumar, Chi -Yu Lu, Wei -Lung Tseng
Summary: This study fabricated yellow-emitting CDs and applied them as a fluorescence turn-on platform for the sensitive and selective detection of lipopolysaccharide (LPS). By designing a peptide that triggers the aggregation of CDs, the fluorescence of CDs can be turned on. This peptide specifically interacts with LPS at neutral pH. The study demonstrated that this method has a fast response time, a wide linear range, a low detection limit, and excellent selectivity for detecting LPS.
Article
Chemistry, Analytical
Zhi Jian Zheng, Li Zhang, Li Zhi Wang, Zu Qi Zhong, Yu Tian Xiong, Jing Guo, Zhi Bin Zhang, Xiao Hong Cao, Sai Jin Xiao
Summary: Rapid, sensitive, and portable uranium detection is essential for effectively controlling and monitoring uranium contamination caused by increasing amounts of uranium-containing waste from nuclear power. The introduction of abundant oxygen- and nitrogen-containing groups to molybdenum oxide quantum dots with dopamine modification significantly increased detection sensitivity and binding affinity for uranium. The DA-functionalized MoOx quantum dots showed a 1000-fold increase in sensitivity compared to MoOx QDs alone, with a detection limit of 3.85 nM, making it a promising method for uranium contamination control and monitoring.
Article
Chemistry, Analytical
Jiaxin Zhou, Yi Xia, Zhirong Zou, Qing Yang, Xue Jiang, Xiaoli Xiong
Summary: This study presents a composite carbon nanomaterial electrode of CDs/MWCNTs, which is synthesized using liquid dielectric barrier discharge (DBD) microplasma. The electrode shows enhanced electron transfer and electrocatalytic activity for sensitive detection of dopamine (DA). The sensor exhibits good sensing performance and successfully detects DA levels in human serum samples with satisfactory selectivity and recovery rate.
ANALYTICA CHIMICA ACTA
(2023)
Article
Nanoscience & Nanotechnology
Sami Ramadan, Richard Lobo, Yuanzhou Zhang, Lizhou Xu, Olena Shaforost, Deana Kwong Hong Tsang, Jingyu Feng, Tianyi Yin, Mo Qiao, Anvesh Rajeshirke, Long R. Jiao, Peter K. Petrov, Iain E. Dunlop, Maria-Magdalena Titirici, Norbert Klein
Summary: Graphene field-effect transistors (GFETs) are ideal building blocks for high-performance electrical biosensors due to the strong response to charged biomolecules. By decorating the graphene sensor area with carbon dots (CDs), the detection limit of GFET biosensors can be significantly improved, resulting in higher sensitivity, faster response, and three orders of magnitude improvements in LoD.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Composites
Wenjie Zhou, Zhe Hu, Jinxin Wei, Hanxu Lu, Hanqing Dai, Jinchan Zhao, Wanlu Zhang, Ruiqian Guo
Summary: Due to its ubiquity in the environment, it is significant to search for a selective and sensitive probe to quantify the concentration of copper ions. This study presents a novel fluorescent probe (CDs-PCN) that combines carbon dots and PCN-224, which can respond rapidly, sensitively, and selectively to copper ions with a low detection limit.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Hazha Omar Othman, Rebwar Omar Hassan, Azad Tawfiq Faizullah
Summary: This study presents a simple and effective method for detecting glucose using boronic acid-functionalized sulfur-doped carbon nanodots, which provides excellent selectivity and resistance to interference. The developed chemosensor successfully measures glucose in human saliva with a detection limit of 0.57 mu M.
MICROCHEMICAL JOURNAL
(2021)
Article
Biophysics
Jie Liu, Jie Chen, Yue Zhang, Linlei Liu, Yuzhuo Guo, Ruo Yuan, Yaqin Chai
Summary: In this study, selenium and nitrogen co-doped carbon dots (SeN-CDs) were synthesized as a new emitter with highly efficient electrochemiluminescence (ECL) and excellent biocompatibility for sensitive detection of microRNA-221 (miRNA-221). The SeN-CDs exhibited superior ECL performance compared to N-doped CDs, with selenium playing a key role in enhancing the ECL efficiency. The biosensor constructed using the SeN-CDs and a T7 Exo-assisted double cycle amplification strategy achieved ultrasensitive detection of miRNA-221, with a low detection limit of 2.3 aM. This work provides a novel method to enhance the ECL performance of carbon dots for the development of sensitive biosensing platforms for biomarker detection and disease diagnosis.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Applied
Guangming Li, Chen Liu, Xingcai Zhang, Pengjie Luo, Guimiao Lin, Wenxiao Jiang
Summary: A facile hydrothermal method was used to synthesize highly photoluminescent N-doped carbon dots with quantum yields reaching 97.1%. An label-free immunosensor based on the inner filter effect of carbon dots was developed for ultrasensitive detection of aflatoxin M1 residues in milk, with a detection limit of 0.0186 ng/mL. The immunosensor showed good linear relationship, high recoveries, and low relative standard deviations, making it a reliable on-site screening method for aflatoxin M1 residue analysis.
Article
Chemistry, Analytical
Zi Yi Xu, Xiao Dong He, Hong Qun Luo, Li Qun Xu, Nian Bing Li
Summary: This article describes an efficient fluorogenic strategy for ultrasensitive detection of dopamine (DA). The method offers rapid response, wide linear range, good selectivity, and sensitivity, and has been successfully applied for the measurement of DA content in practical urine samples and evaluation of DA levels in a rat model of depression.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Mengyuan He, Bo Zheng, Ning Shang, Yu Xiao, Yuanhang Wei, Xuebo Hu
Summary: An ultrasensitive molecular beacon probe was developed for microRNA-21 determination using carbon dots as energy donor and organic dye, and graphene oxide as synergistic quencher. The fluorescence of carbon dots was decreased by luminescence resonance energy transfer when conjugated to the molecular beacon. Introducing graphene oxide as a quencher effectively enhanced the energy transfer efficiency. In the presence of microRNA-21, the probe exhibited fluorescence recovery due to the inhibition of the energy transfer process. The probe showed excellent specificity and could be used for miRNA-21 determination in a wide range of concentrations.
MICROCHEMICAL JOURNAL
(2023)
Article
Materials Science, Biomaterials
Yan-Yi Chen, Darwin Kurniawan, Seyyed Mojtaba Mousavi, Pavel V. Fedotov, Elena D. Obraztsova, Wei-Hung Chiang
Summary: The conversion of chitosan into nitrogen-doped graphene quantum dots (NGQDs) using an atmospheric pressure microplasma system enables the selective detection of cancer and neurotransmitter biomarkers. By adjusting the pH conditions, multiple biomolecules can be simultaneously detected with high selectivity and sensitivity, showing linear relationships between biomarker concentration and photoluminescence (PL) intensity ratio.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Nanoscience & Nanotechnology
Fangyuan Xing, Jingjing Wang, Zhen Wang, Yunfei Li, Xiaofeng Gou, Hailong Zhang, Shuyun Zhou, Junlong Zhao, Zheng Xie
Summary: Silane-functionalized antimonene nanosheets exhibit high concentration, compatibility, and dispersion stability, showing excellent optical limiting performance. In copolymerized organically modified silicate gel glasses, the doping concentration can reach 2%, which is higher than conventional materials.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Characterization & Testing
Yulong Xu, Di Yang, Shaosen Huo, Junkai Ren, Ningxiao Gao, Zhiyuan Chen, Yong Liu, Zheng Xie, Shuyun Zhou, Xiaozhong Qu
Summary: Self-referenced photoluminescent oxygen sensitive fibrous membranes were successfully prepared for evaluating the freshness of agricultural products by monitoring the concentration change of environmental oxygen in packaged fruits. This study demonstrates the potential of using such membranes as an optical oxygen sensor for agricultural applications.
Article
Materials Science, Multidisciplinary
Zhen Wang, Xuezhe Dong, Shuyun Zhou, Zheng Xie, Zeev Zalevsky
Summary: Two narrower-bandwidth emission graphene quantum dots with long-wavelength fluorescence were successfully prepared and applied to spectral and spatial superresolved sensing in this study. The proposed method extracted spectroscopic information without using a spectrometer and achieved spatial separation through the unique temporal signatures of the two types of graphene quantum dots.
NPG ASIA MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Linli Xu, Jibin Sun, Tianhong Tang, Hongyang Zhang, Mingzi Sun, Jianqi Zhang, Jiahua Li, Bolong Huang, Zhengping Wang, Zheng Xie, Wai-Yeung Wong
Summary: Two free-standing mercurated graphyne nanosheets were successfully prepared via the interface-assisted bottom-up method, showing stable and outstanding broadband nonlinear saturable absorption properties. The passively Q-switched performances of these nanosheets as saturable absorbers outperform other 2D nanomaterials and can be used for device fabrication.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Biochemistry & Molecular Biology
Long Chen, Cuiyu Wu, Zheng Xie, Chenghua Sun, Shuyun Zhou
Summary: This study reports for the first time the exceptional functionality of GOS in laser protection, with a fast response, low optical limiting threshold, and high damage threshold. Furthermore, the optical limiting response of GOS is size-dependent.
Article
Chemistry, Multidisciplinary
Xuezhe Dong, Yunfeng Wang, Ruifang Guan, Junkai Ren, Zheng Xie
Summary: Nanomaterials often exhibit unique properties in solutions, but can be compromised in the solid state, requiring incorporation into substrates or hybridization with other functional materials for various devices and applications.
Article
Nanoscience & Nanotechnology
Cuiyu Wu, Chuanrui Zhao, Li Wang, Zheng Xie, Zhengping Wang, Shuyun Zhou
Summary: This study prepared Sb2S3 nanosheets by liquid-phase exfoliation, obtained nanosheets of different sizes by adjusting processing parameters, investigated their nonlinear optical properties using Z-scan technique, and found that smaller nanosheets exhibit better performance, providing a new pathway for nonlinear optical devices based on Sb2S3.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Tianyu Chao, Jingjing Wang, Xuezhe Dong, Junkai Ren, Hailong Zhang, Rui Song, Zheng Xie
Summary: By designing carbon dots-silica hybrid materials, RTP emission with ultralong lifetime and high phosphorescent quantum yield is achieved, stemming from the synergistic strategy of abundant electron traps, highly rigid network, and stable covalent bond. This design provides a new approach for the development of carbon dots-based RTP materials, showing broad application prospects in various fields.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jingjing Wang, Shaofeng Zhang, Yunfei Li, Cuiyu Wu, Wenfei Zhang, Hailong Zhang, Zheng Xie, Shuyun Zhou
Summary: This study reports an in-situ hybridization strategy of carbon dots and organic materials, which achieves ultra-broadband random laser emission with a wider wavelength range than previously reported works, and shows potential for various applications.
Article
Nanoscience & Nanotechnology
Tianyu Chao, Xuezhe Dong, Jingjing Wang, Rui Song, Zheng Xie, Shuyun Zhou
Summary: This study presents a simple method for preparing carbon dots with dispersion-state fluorescence, aggregation-state fluorescence, and phosphorescence. The resulting phosphorescent carbon dots have a long afterglow lifetime and excellent water dispersibility.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Bin Liang, Jie Zhao, Jingjing Wang, Yunfei Li, Bin Han, Jie Li, Xu Ding, Zheng Xie, Hailong Wang, Shuyun Zhou
Summary: This research revealed that two-dimensional (2D) conjugated organic frameworks (COFs) with well-extended pi-conjugated planes exhibited superior third-order nonlinear optical properties and stronger excited-state absorption. The study provides valuable inspiration for subsequent investigation on the structure-activity relationships by adjusting the conjugation orientation of COFs.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Biochemistry & Molecular Biology
Xugui Lv, Nan Li, Yunfei Li, Qingyu Ma, Zheng Xie, Shuyun Zhou
Summary: With the advancement of laser technology, it is important to research new laser protection materials. In this study, dispersible siloxene nanosheets (SiNSs) with a thickness of about 1.5 nm were prepared using a top-down topological reaction method. The broad-band nonlinear optical properties of SiNSs and their hybrid gel glasses were investigated using Z-scan and optical limiting testing under visible-near IR nanosecond laser. The results showed that SiNSs exhibited outstanding nonlinear optical properties and the SiNSs hybrid gel glasses had high transmittance and excellent optical limiting capabilities, making them promising materials for broad-band nonlinear optical limiting and potential applications in optoelectronics.
Article
Nanoscience & Nanotechnology
Jianwei Zhou, Zhongxun Yu, Mohamedazeem M. Mohideen, Jing Ge, Xujin Lv, Ming Yao, Zheng Xie, Ce Wang, Ping Hu, Yong Liu
Summary: In this study, polyvinyl alcohol/polydopamine-modified boron nitride nanosheet (PVA/BNNS@PDA) nanocomposites with high thermal conductivity and outstanding electrical insulation properties were designed. The modified BNNS@PDA improved the interaction between the filler and the polymer matrix, resulting in superior thermal conductivity, excellent insulation, and perfect flexibility. These nanocomposites offer a new perspective for designing advanced thermal management materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Nan Li, Xuezhe Dong, Xugui Lv, Yunfei Li, Qingyu Ma, Ruifang Guan, Zheng Xie
Summary: We synthesized sulfur and nitrogen co-doped carbon dots with tunable fluorescence in both solutions and solid matrices, controlled by surface state. Furthermore, it can be used for trace water detection in various organic solvents, particularly in acetone, with a low limit of detection of 0.042%.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Long-Sheng Wang, Yue Wang, Chun-Lin Lv, Chao Guo, Fang-Yuan Xing, Yu-Jia Dong, Zheng Xie, Shu-Yun Zhou, Yong-Ge Wei
Summary: In this study, we employed a strategy of substituting addenda atoms of polyoxometalates (POMs) to obtain a class of polyoxomolybdovanadates with tunable third-order nonlinear optical (NLO) properties. Among these compounds, V8Mo1 showed the best nonlinear absorption performance and could be doped into organically modified silica gel glasses to exhibit exceptional broadband optical limiting (OL) properties.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)
